From 05951783dee6ad55dd8edb482d54d76f609296b0 Mon Sep 17 00:00:00 2001
From: YunaiV <zhijiantianya@gmail.com>
Date: Tue, 4 Oct 2022 17:51:30 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=20yudao-sso-demo-by-password?=
 =?UTF-8?q?=20=E7=A4=BA=E4=BE=8B=EF=BC=8C=E5=9F=BA=E4=BA=8E=E5=AF=86?=
 =?UTF-8?q?=E7=A0=81=E6=A8=A1=E5=BC=8F=EF=BC=8C=E5=AE=9E=E7=8E=B0=20SSO=20?=
 =?UTF-8?q?=E5=8D=95=E7=82=B9=E7=99=BB=E5=BD=95?=
MIME-Version: 1.0
Content-Type: text/plain; charset=UTF-8
Content-Transfer-Encoding: 8bit

---
 yudao-example/pom.xml                         |   1 +
 .../src/main/resources/static/index.html      |   2 +-
 .../yudao-sso-demo-by-password/pom.xml        |  65 ++++++++
 .../yudao/ssodemo/SSODemoApplication.java     |  13 ++
 .../yudao/ssodemo/client/OAuth2Client.java    | 127 +++++++++++++++
 .../yudao/ssodemo/client/UserClient.java      |  73 +++++++++
 .../ssodemo/client/dto/CommonResult.java      |  28 ++++
 .../dto/oauth2/OAuth2AccessTokenRespDTO.java  |  45 +++++
 .../dto/oauth2/OAuth2CheckTokenRespDTO.java   |  59 +++++++
 .../client/dto/user/UserInfoRespDTO.java      |  97 +++++++++++
 .../client/dto/user/UserUpdateReqDTO.java     |  35 ++++
 .../ssodemo/controller/AuthController.java    |  50 ++++++
 .../ssodemo/controller/UserController.java    |  40 +++++
 .../config/SecurityConfiguration.java         |  48 ++++++
 .../ssodemo/framework/core/LoginUser.java     |  37 +++++
 .../filter/TokenAuthenticationFilter.java     |  66 ++++++++
 .../core/handler/AccessDeniedHandlerImpl.java |  44 +++++
 .../handler/AuthenticationEntryPointImpl.java |  36 ++++
 .../framework/core/util/SecurityUtils.java    | 103 ++++++++++++
 .../framework/core/util/ServletUtils.java     |  28 ++++
 .../src/main/resources/application.yaml       |   2 +
 .../src/main/resources/static/index.html      | 154 ++++++++++++++++++
 .../src/main/resources/static/login.html      |  74 +++++++++
 23 files changed, 1226 insertions(+), 1 deletion(-)
 create mode 100644 yudao-example/yudao-sso-demo-by-password/pom.xml
 create mode 100644 yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/SSODemoApplication.java
 create mode 100644 yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/OAuth2Client.java
 create mode 100644 yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/UserClient.java
 create mode 100644 yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/dto/CommonResult.java
 create mode 100644 yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/dto/oauth2/OAuth2AccessTokenRespDTO.java
 create mode 100644 yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/dto/oauth2/OAuth2CheckTokenRespDTO.java
 create mode 100644 yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/dto/user/UserInfoRespDTO.java
 create mode 100644 yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/dto/user/UserUpdateReqDTO.java
 create mode 100644 yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/controller/AuthController.java
 create mode 100644 yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/controller/UserController.java
 create mode 100644 yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/config/SecurityConfiguration.java
 create mode 100644 yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/LoginUser.java
 create mode 100644 yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/filter/TokenAuthenticationFilter.java
 create mode 100644 yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/handler/AccessDeniedHandlerImpl.java
 create mode 100644 yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/handler/AuthenticationEntryPointImpl.java
 create mode 100644 yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/util/SecurityUtils.java
 create mode 100644 yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/util/ServletUtils.java
 create mode 100644 yudao-example/yudao-sso-demo-by-password/src/main/resources/application.yaml
 create mode 100644 yudao-example/yudao-sso-demo-by-password/src/main/resources/static/index.html
 create mode 100644 yudao-example/yudao-sso-demo-by-password/src/main/resources/static/login.html

diff --git a/yudao-example/pom.xml b/yudao-example/pom.xml
index 588b86387..82b85a5f9 100644
--- a/yudao-example/pom.xml
+++ b/yudao-example/pom.xml
@@ -12,6 +12,7 @@
     <packaging>pom</packaging>
     <modules>
         <module>yudao-sso-demo-by-code</module>
+        <module>yudao-sso-demo-by-password</module>
     </modules>
 
     <name>${project.artifactId}</name>
diff --git a/yudao-example/yudao-sso-demo-by-code/src/main/resources/static/index.html b/yudao-example/yudao-sso-demo-by-code/src/main/resources/static/index.html
index 8511b668b..a4f858363 100644
--- a/yudao-example/yudao-sso-demo-by-code/src/main/resources/static/index.html
+++ b/yudao-example/yudao-sso-demo-by-code/src/main/resources/static/index.html
@@ -75,7 +75,7 @@
     }
 
     /**
-     * 刷新令牌
+     * 登出，删除访问令牌
      */
     function logout() {
       const accessToken = localStorage.getItem('ACCESS-TOKEN');
diff --git a/yudao-example/yudao-sso-demo-by-password/pom.xml b/yudao-example/yudao-sso-demo-by-password/pom.xml
new file mode 100644
index 000000000..e3f0d2e77
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/pom.xml
@@ -0,0 +1,65 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <!-- 由于方便大家拷贝，使用不使用 yudao 作为 Maven parent -->
+
+    <groupId>cn.iocoder.boot</groupId>
+    <artifactId>yudao-sso-demo-by-password</artifactId>
+    <version>1.0.0-snapshot</version>
+    <packaging>jar</packaging>
+
+    <name>${project.artifactId}</name>
+    <description>基于密码模式，如何实现 SSO 单点登录？</description>
+    <url>https://github.com/YunaiV/ruoyi-vue-pro</url>
+
+    <properties>
+        <!-- Maven 相关 -->
+        <maven.compiler.source>8</maven.compiler.source>
+        <maven.compiler.target>8</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <!-- 统一依赖管理 -->
+        <spring.boot.version>2.6.10</spring.boot.version>
+    </properties>
+
+    <dependencyManagement>
+        <dependencies>
+            <!-- 统一依赖管理 -->
+            <dependency>
+                <groupId>org.springframework.boot</groupId>
+                <artifactId>spring-boot-dependencies</artifactId>
+                <version>${spring.boot.version}</version>
+                <type>pom</type>
+                <scope>import</scope>
+            </dependency>
+        </dependencies>
+    </dependencyManagement>
+
+    <dependencies>
+        <!-- Web 相关 -->
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-web</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>org.springframework.boot</groupId>
+            <artifactId>spring-boot-starter-security</artifactId>
+        </dependency>
+
+        <dependency>
+            <groupId>cn.hutool</groupId>
+            <artifactId>hutool-all</artifactId>
+            <version>5.8.5</version>
+        </dependency>
+
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <optional>true</optional>
+        </dependency>
+    </dependencies>
+
+</project>
diff --git a/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/SSODemoApplication.java b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/SSODemoApplication.java
new file mode 100644
index 000000000..f6b160745
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/SSODemoApplication.java
@@ -0,0 +1,13 @@
+package cn.iocoder.yudao.ssodemo;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class SSODemoApplication {
+
+    public static void main(String[] args) {
+        SpringApplication.run(SSODemoApplication.class, args);
+    }
+
+}
diff --git a/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/OAuth2Client.java b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/OAuth2Client.java
new file mode 100644
index 000000000..b5f971989
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/OAuth2Client.java
@@ -0,0 +1,127 @@
+package cn.iocoder.yudao.ssodemo.client;
+
+import cn.iocoder.yudao.ssodemo.client.dto.CommonResult;
+import cn.iocoder.yudao.ssodemo.client.dto.oauth2.OAuth2AccessTokenRespDTO;
+import cn.iocoder.yudao.ssodemo.client.dto.oauth2.OAuth2CheckTokenRespDTO;
+import org.springframework.core.ParameterizedTypeReference;
+import org.springframework.http.*;
+import org.springframework.stereotype.Component;
+import org.springframework.util.Assert;
+import org.springframework.util.Base64Utils;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.client.RestTemplate;
+
+import java.nio.charset.StandardCharsets;
+
+/**
+ * OAuth 2.0 客户端
+ *
+ * 对应调用 OAuth2OpenController 接口
+ */
+@Component
+public class OAuth2Client {
+
+    private static final String BASE_URL = "http://127.0.0.1:48080/admin-api/system/oauth2";
+
+    /**
+     * 租户编号
+     *
+     * 默认使用 1；如果使用别的租户，可以调整
+     */
+    public static final Long TENANT_ID = 1L;
+
+    private static final String CLIENT_ID = "yudao-sso-demo-by-code";
+    private static final String CLIENT_SECRET = "test";
+
+
+//    @Resource // 可优化，注册一个 RestTemplate Bean，然后注入
+    private final RestTemplate restTemplate = new RestTemplate();
+
+    /**
+     * 校验访问令牌，并返回它的基本信息
+     *
+     * @param token 访问令牌
+     * @return 访问令牌的基本信息
+     */
+    public CommonResult<OAuth2CheckTokenRespDTO> checkToken(String token) {
+        // 1.1 构建请求头
+        HttpHeaders headers = new HttpHeaders();
+        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
+        headers.set("tenant-id", TENANT_ID.toString());
+        addClientHeader(headers);
+        // 1.2 构建请求参数
+        MultiValueMap<String, Object> body = new LinkedMultiValueMap<>();
+        body.add("token", token);
+
+        // 2. 执行请求
+        ResponseEntity<CommonResult<OAuth2CheckTokenRespDTO>> exchange = restTemplate.exchange(
+                BASE_URL + "/check-token",
+                HttpMethod.POST,
+                new HttpEntity<>(body, headers),
+                new ParameterizedTypeReference<CommonResult<OAuth2CheckTokenRespDTO>>() {}); // 解决 CommonResult 的泛型丢失
+        Assert.isTrue(exchange.getStatusCode().is2xxSuccessful(), "响应必须是 200 成功");
+        return exchange.getBody();
+    }
+
+    /**
+     * 使用刷新令牌，获得（刷新）访问令牌
+     *
+     * @param refreshToken 刷新令牌
+     * @return 访问令牌
+     */
+    public CommonResult<OAuth2AccessTokenRespDTO> refreshToken(String refreshToken) {
+        // 1.1 构建请求头
+        HttpHeaders headers = new HttpHeaders();
+        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
+        headers.set("tenant-id", TENANT_ID.toString());
+        addClientHeader(headers);
+        // 1.2 构建请求参数
+        MultiValueMap<String, Object> body = new LinkedMultiValueMap<>();
+        body.add("grant_type", "refresh_token");
+        body.add("refresh_token", refreshToken);
+
+        // 2. 执行请求
+        ResponseEntity<CommonResult<OAuth2AccessTokenRespDTO>> exchange = restTemplate.exchange(
+                BASE_URL + "/token",
+                HttpMethod.POST,
+                new HttpEntity<>(body, headers),
+                new ParameterizedTypeReference<CommonResult<OAuth2AccessTokenRespDTO>>() {}); // 解决 CommonResult 的泛型丢失
+        Assert.isTrue(exchange.getStatusCode().is2xxSuccessful(), "响应必须是 200 成功");
+        return exchange.getBody();
+    }
+
+    /**
+     * 删除访问令牌
+     *
+     * @param token 访问令牌
+     * @return 成功
+     */
+    public CommonResult<Boolean> revokeToken(String token) {
+        // 1.1 构建请求头
+        HttpHeaders headers = new HttpHeaders();
+        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
+        headers.set("tenant-id", TENANT_ID.toString());
+        addClientHeader(headers);
+        // 1.2 构建请求参数
+        MultiValueMap<String, Object> body = new LinkedMultiValueMap<>();
+        body.add("token", token);
+
+        // 2. 执行请求
+        ResponseEntity<CommonResult<Boolean>> exchange = restTemplate.exchange(
+                BASE_URL + "/token",
+                HttpMethod.DELETE,
+                new HttpEntity<>(body, headers),
+                new ParameterizedTypeReference<CommonResult<Boolean>>() {}); // 解决 CommonResult 的泛型丢失
+        Assert.isTrue(exchange.getStatusCode().is2xxSuccessful(), "响应必须是 200 成功");
+        return exchange.getBody();
+    }
+
+    private static void addClientHeader(HttpHeaders headers) {
+        // client 拼接，需要 BASE64 编码
+        String client = CLIENT_ID + ":" + CLIENT_SECRET;
+        client = Base64Utils.encodeToString(client.getBytes(StandardCharsets.UTF_8));
+        headers.add("Authorization", "Basic " + client);
+    }
+
+}
diff --git a/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/UserClient.java b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/UserClient.java
new file mode 100644
index 000000000..666bd3ee4
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/UserClient.java
@@ -0,0 +1,73 @@
+package cn.iocoder.yudao.ssodemo.client;
+
+import cn.iocoder.yudao.ssodemo.client.dto.CommonResult;
+import cn.iocoder.yudao.ssodemo.client.dto.user.UserInfoRespDTO;
+import cn.iocoder.yudao.ssodemo.client.dto.user.UserUpdateReqDTO;
+import cn.iocoder.yudao.ssodemo.framework.core.LoginUser;
+import cn.iocoder.yudao.ssodemo.framework.core.util.SecurityUtils;
+import org.springframework.core.ParameterizedTypeReference;
+import org.springframework.http.*;
+import org.springframework.stereotype.Component;
+import org.springframework.util.Assert;
+import org.springframework.util.LinkedMultiValueMap;
+import org.springframework.util.MultiValueMap;
+import org.springframework.web.client.RestTemplate;
+
+/**
+ * 用户 User 信息的客户端
+ *
+ * 对应调用 OAuth2UserController 接口
+ */
+@Component
+public class UserClient {
+
+    private static final String BASE_URL = "http://127.0.0.1:48080/admin-api//system/oauth2/user";
+
+    //    @Resource // 可优化，注册一个 RestTemplate Bean，然后注入
+    private final RestTemplate restTemplate = new RestTemplate();
+
+    public CommonResult<UserInfoRespDTO> getUser() {
+        // 1.1 构建请求头
+        HttpHeaders headers = new HttpHeaders();
+        headers.setContentType(MediaType.APPLICATION_FORM_URLENCODED);
+        headers.set("tenant-id", OAuth2Client.TENANT_ID.toString());
+        addTokenHeader(headers);
+        // 1.2 构建请求参数
+        MultiValueMap<String, Object> body = new LinkedMultiValueMap<>();
+
+        // 2. 执行请求
+        ResponseEntity<CommonResult<UserInfoRespDTO>> exchange = restTemplate.exchange(
+                BASE_URL + "/get",
+                HttpMethod.GET,
+                new HttpEntity<>(body, headers),
+                new ParameterizedTypeReference<CommonResult<UserInfoRespDTO>>() {}); // 解决 CommonResult 的泛型丢失
+        Assert.isTrue(exchange.getStatusCode().is2xxSuccessful(), "响应必须是 200 成功");
+        return exchange.getBody();
+    }
+
+    public CommonResult<Boolean> updateUser(UserUpdateReqDTO updateReqDTO) {
+        // 1.1 构建请求头
+        HttpHeaders headers = new HttpHeaders();
+        headers.setContentType(MediaType.APPLICATION_JSON);
+        headers.set("tenant-id", OAuth2Client.TENANT_ID.toString());
+        addTokenHeader(headers);
+        // 1.2 构建请求参数
+        // 使用 updateReqDTO 即可
+
+        // 2. 执行请求
+        ResponseEntity<CommonResult<Boolean>> exchange = restTemplate.exchange(
+                BASE_URL + "/update",
+                HttpMethod.PUT,
+                new HttpEntity<>(updateReqDTO, headers),
+                new ParameterizedTypeReference<CommonResult<Boolean>>() {}); // 解决 CommonResult 的泛型丢失
+        Assert.isTrue(exchange.getStatusCode().is2xxSuccessful(), "响应必须是 200 成功");
+        return exchange.getBody();
+    }
+
+
+    private static void addTokenHeader(HttpHeaders headers) {
+        LoginUser loginUser = SecurityUtils.getLoginUser();
+        Assert.notNull(loginUser, "登录用户不能为空");
+        headers.add("Authorization", "Bearer " + loginUser.getAccessToken());
+    }
+}
diff --git a/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/dto/CommonResult.java b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/dto/CommonResult.java
new file mode 100644
index 000000000..548fe51e4
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/dto/CommonResult.java
@@ -0,0 +1,28 @@
+package cn.iocoder.yudao.ssodemo.client.dto;
+
+import lombok.Data;
+
+import java.io.Serializable;
+
+/**
+ * 通用返回
+ *
+ * @param <T> 数据泛型
+ */
+@Data
+public class CommonResult<T> implements Serializable {
+
+    /**
+     * 错误码
+     */
+    private Integer code;
+    /**
+     * 返回数据
+     */
+    private T data;
+    /**
+     * 错误提示，用户可阅读
+     */
+    private String msg;
+
+}
diff --git a/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/dto/oauth2/OAuth2AccessTokenRespDTO.java b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/dto/oauth2/OAuth2AccessTokenRespDTO.java
new file mode 100644
index 000000000..6a5369a20
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/dto/oauth2/OAuth2AccessTokenRespDTO.java
@@ -0,0 +1,45 @@
+package cn.iocoder.yudao.ssodemo.client.dto.oauth2;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+/**
+ * 访问令牌 Response DTO
+ */
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class OAuth2AccessTokenRespDTO {
+
+    /**
+     * 访问令牌
+     */
+    @JsonProperty("access_token")
+    private String accessToken;
+
+    /**
+     * 刷新令牌
+     */
+    @JsonProperty("refresh_token")
+    private String refreshToken;
+
+    /**
+     * 令牌类型
+     */
+    @JsonProperty("token_type")
+    private String tokenType;
+
+    /**
+     * 过期时间；单位：秒
+     */
+    @JsonProperty("expires_in")
+    private Long expiresIn;
+
+    /**
+     * 授权范围；如果多个授权范围，使用空格分隔
+     */
+    private String scope;
+
+}
diff --git a/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/dto/oauth2/OAuth2CheckTokenRespDTO.java b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/dto/oauth2/OAuth2CheckTokenRespDTO.java
new file mode 100644
index 000000000..862bcf04b
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/dto/oauth2/OAuth2CheckTokenRespDTO.java
@@ -0,0 +1,59 @@
+package cn.iocoder.yudao.ssodemo.client.dto.oauth2;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.List;
+
+/**
+ * 校验令牌 Response DTO
+ *
+ * @author 芋道源码
+ */
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class OAuth2CheckTokenRespDTO {
+
+    /**
+     * 用户编号
+     */
+    @JsonProperty("user_id")
+    private Long userId;
+    /**
+     * 用户类型
+     */
+    @JsonProperty("user_type")
+    private Integer userType;
+    /**
+     * 租户编号
+     */
+    @JsonProperty("tenant_id")
+    private Long tenantId;
+
+    /**
+     * 客户端编号
+     */
+    @JsonProperty("client_id")
+    private String clientId;
+    /**
+     * 授权范围
+     */
+    private List<String> scopes;
+
+    /**
+     * 访问令牌
+     */
+    @JsonProperty("access_token")
+    private String accessToken;
+
+    /**
+     * 过期时间
+     *
+     * 时间戳 / 1000，即单位：秒
+     */
+    private Long exp;
+
+}
diff --git a/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/dto/user/UserInfoRespDTO.java b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/dto/user/UserInfoRespDTO.java
new file mode 100644
index 000000000..e81bea9eb
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/dto/user/UserInfoRespDTO.java
@@ -0,0 +1,97 @@
+package cn.iocoder.yudao.ssodemo.client.dto.user;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+import java.util.List;
+
+/**
+ * 获得用户基本信息 Response dto
+ */
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class UserInfoRespDTO {
+
+    /**
+     * 用户编号
+     */
+    private Long id;
+
+    /**
+     * 用户账号
+     */
+    private String username;
+
+    /**
+     * 用户昵称
+     */
+    private String nickname;
+
+    /**
+     * 用户邮箱
+     */
+    private String email;
+    /**
+     * 手机号码
+     */
+    private String mobile;
+
+    /**
+     * 用户性别
+     */
+    private Integer sex;
+
+    /**
+     * 用户头像
+     */
+    private String avatar;
+
+    /**
+     * 所在部门
+     */
+    private Dept dept;
+
+    /**
+     * 所属岗位数组
+     */
+    private List<Post> posts;
+
+    /**
+     * 部门
+     */
+    @Data
+    public static class Dept {
+
+        /**
+         * 部门编号
+         */
+        private Long id;
+
+        /**
+         * 部门名称
+         */
+        private String name;
+
+    }
+
+    /**
+     * 岗位
+     */
+    @Data
+    public static class Post {
+
+        /**
+         * 岗位编号
+         */
+        private Long id;
+
+        /**
+         * 岗位名称
+         */
+        private String name;
+
+    }
+
+}
diff --git a/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/dto/user/UserUpdateReqDTO.java b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/dto/user/UserUpdateReqDTO.java
new file mode 100644
index 000000000..e711d7311
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/client/dto/user/UserUpdateReqDTO.java
@@ -0,0 +1,35 @@
+package cn.iocoder.yudao.ssodemo.client.dto.user;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+/**
+ * 更新用户基本信息 Request DTO
+ */
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class UserUpdateReqDTO {
+
+    /**
+     * 用户昵称
+     */
+    private String nickname;
+
+    /**
+     * 用户邮箱
+     */
+    private String email;
+
+    /**
+     * 手机号码
+     */
+    private String mobile;
+
+    /**
+     * 用户性别
+     */
+    private Integer sex;
+
+}
diff --git a/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/controller/AuthController.java b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/controller/AuthController.java
new file mode 100644
index 000000000..6aedc3b24
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/controller/AuthController.java
@@ -0,0 +1,50 @@
+package cn.iocoder.yudao.ssodemo.controller;
+
+import cn.hutool.core.util.StrUtil;
+import cn.iocoder.yudao.ssodemo.client.OAuth2Client;
+import cn.iocoder.yudao.ssodemo.client.dto.CommonResult;
+import cn.iocoder.yudao.ssodemo.client.dto.oauth2.OAuth2AccessTokenRespDTO;
+import cn.iocoder.yudao.ssodemo.framework.core.util.SecurityUtils;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+import org.springframework.web.bind.annotation.RestController;
+
+import javax.annotation.Resource;
+import javax.servlet.http.HttpServletRequest;
+
+@RestController
+@RequestMapping("/auth")
+public class AuthController {
+
+    @Resource
+    private OAuth2Client oauth2Client;
+
+    /**
+     * 使用刷新令牌，获得（刷新）访问令牌
+     *
+     * @param refreshToken 刷新令牌
+     * @return 访问令牌；注意，实际项目中，最好创建对应的 ResponseVO 类，只返回必要的字段
+     */
+    @PostMapping("/refresh-token")
+    public CommonResult<OAuth2AccessTokenRespDTO> refreshToken(@RequestParam("refreshToken") String refreshToken) {
+        return oauth2Client.refreshToken(refreshToken);
+    }
+
+    /**
+     * 退出登录
+     *
+     * @param request 请求
+     * @return 成功
+     */
+    @PostMapping("/logout")
+    public CommonResult<Boolean> logout(HttpServletRequest request) {
+        String token = SecurityUtils.obtainAuthorization(request, "Authorization");
+        if (StrUtil.isNotBlank(token)) {
+            return oauth2Client.revokeToken(token);
+        }
+        // 返回成功
+        return new CommonResult<>();
+    }
+
+}
diff --git a/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/controller/UserController.java b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/controller/UserController.java
new file mode 100644
index 000000000..819c752bc
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/controller/UserController.java
@@ -0,0 +1,40 @@
+package cn.iocoder.yudao.ssodemo.controller;
+
+import cn.iocoder.yudao.ssodemo.client.UserClient;
+import cn.iocoder.yudao.ssodemo.client.dto.CommonResult;
+import cn.iocoder.yudao.ssodemo.client.dto.user.UserInfoRespDTO;
+import cn.iocoder.yudao.ssodemo.client.dto.user.UserUpdateReqDTO;
+import org.springframework.web.bind.annotation.*;
+
+import javax.annotation.Resource;
+
+@RestController
+@RequestMapping("/user")
+public class UserController {
+
+    @Resource
+    private UserClient userClient;
+
+    /**
+     * 获得当前登录用户的基本信息
+     *
+     * @return 用户信息；注意，实际项目中，最好创建对应的 ResponseVO 类，只返回必要的字段
+     */
+    @GetMapping("/get")
+    public CommonResult<UserInfoRespDTO> getUser() {
+        return userClient.getUser();
+    }
+
+    /**
+     * 更新当前登录用户的昵称
+     *
+     * @param nickname 昵称
+     * @return 成功
+     */
+    @PutMapping("/update")
+    public CommonResult<Boolean> updateUser(@RequestParam("nickname") String nickname) {
+        UserUpdateReqDTO updateReqDTO = new UserUpdateReqDTO(nickname, null, null, null);
+        return userClient.updateUser(updateReqDTO);
+    }
+
+}
diff --git a/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/config/SecurityConfiguration.java b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/config/SecurityConfiguration.java
new file mode 100644
index 000000000..1d19fcfdb
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/config/SecurityConfiguration.java
@@ -0,0 +1,48 @@
+package cn.iocoder.yudao.ssodemo.framework.config;
+
+import cn.iocoder.yudao.ssodemo.framework.core.filter.TokenAuthenticationFilter;
+import cn.iocoder.yudao.ssodemo.framework.core.handler.AccessDeniedHandlerImpl;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.http.HttpMethod;
+import org.springframework.security.config.annotation.web.builders.HttpSecurity;
+import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
+import org.springframework.security.web.AuthenticationEntryPoint;
+import org.springframework.security.web.authentication.UsernamePasswordAuthenticationFilter;
+
+import javax.annotation.Resource;
+
+@Configuration
+public class SecurityConfiguration extends WebSecurityConfigurerAdapter {
+
+    @Resource
+    private TokenAuthenticationFilter tokenAuthenticationFilter;
+
+    @Resource
+    private AccessDeniedHandlerImpl accessDeniedHandler;
+    @Resource
+    private AuthenticationEntryPoint authenticationEntryPoint;
+
+    @Override
+    protected void configure(HttpSecurity httpSecurity) throws Exception {
+        // 设置 URL 安全权限
+        httpSecurity.csrf().disable() // 禁用 CSRF 保护
+                .authorizeRequests()
+                // 1. 静态资源，可匿名访问
+                .antMatchers(HttpMethod.GET, "/*.html", "/**/*.html", "/**/*.css", "/**/*.js").permitAll()
+                // 2. 登录相关的接口，可匿名访问
+                .antMatchers("/auth/login-by-code").permitAll()
+                .antMatchers("/auth/refresh-token").permitAll()
+                .antMatchers("/auth/logout").permitAll()
+                // last. 兜底规则，必须认证
+                .and().authorizeRequests()
+                .anyRequest().authenticated();
+
+        // 设置处理器
+        httpSecurity.exceptionHandling().accessDeniedHandler(accessDeniedHandler)
+                .authenticationEntryPoint(authenticationEntryPoint);
+
+        // 添加 Token Filter
+        httpSecurity.addFilterBefore(tokenAuthenticationFilter, UsernamePasswordAuthenticationFilter.class);
+    }
+
+}
diff --git a/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/LoginUser.java b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/LoginUser.java
new file mode 100644
index 000000000..44f3edf54
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/LoginUser.java
@@ -0,0 +1,37 @@
+package cn.iocoder.yudao.ssodemo.framework.core;
+
+import lombok.Data;
+
+import java.util.List;
+
+/**
+ * 登录用户信息
+ *
+ * @author 芋道源码
+ */
+@Data
+public class LoginUser {
+
+    /**
+     * 用户编号
+     */
+    private Long id;
+    /**
+     * 用户类型
+     */
+    private Integer userType;
+    /**
+     * 租户编号
+     */
+    private Long tenantId;
+    /**
+     * 授权范围
+     */
+    private List<String> scopes;
+
+    /**
+     * 访问令牌
+     */
+    private String accessToken;
+
+}
diff --git a/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/filter/TokenAuthenticationFilter.java b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/filter/TokenAuthenticationFilter.java
new file mode 100644
index 000000000..70bb40eaa
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/filter/TokenAuthenticationFilter.java
@@ -0,0 +1,66 @@
+package cn.iocoder.yudao.ssodemo.framework.core.filter;
+
+import cn.iocoder.yudao.ssodemo.client.OAuth2Client;
+import cn.iocoder.yudao.ssodemo.client.dto.CommonResult;
+import cn.iocoder.yudao.ssodemo.client.dto.oauth2.OAuth2CheckTokenRespDTO;
+import cn.iocoder.yudao.ssodemo.framework.core.LoginUser;
+import cn.iocoder.yudao.ssodemo.framework.core.util.SecurityUtils;
+import org.springframework.stereotype.Component;
+import org.springframework.util.StringUtils;
+import org.springframework.web.filter.OncePerRequestFilter;
+
+import javax.annotation.Resource;
+import javax.servlet.FilterChain;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+/**
+ * Token 过滤器，验证 token 的有效性
+ * 验证通过后，获得 {@link LoginUser} 信息，并加入到 Spring Security 上下文
+ *
+ * @author 芋道源码
+ */
+@Component
+public class TokenAuthenticationFilter extends OncePerRequestFilter {
+
+    @Resource
+    private OAuth2Client oauth2Client;
+
+    @Override
+    protected void doFilterInternal(HttpServletRequest request, HttpServletResponse response,
+                                    FilterChain filterChain) throws ServletException, IOException {
+        // 1. 获得访问令牌
+        String token = SecurityUtils.obtainAuthorization(request, "Authorization");
+        if (StringUtils.hasText(token)) {
+            // 2. 基于 token 构建登录用户
+            LoginUser loginUser = buildLoginUserByToken(token);
+            // 3. 设置当前用户
+            if (loginUser != null) {
+                SecurityUtils.setLoginUser(loginUser, request);
+            }
+        }
+
+        // 继续过滤链
+        filterChain.doFilter(request, response);
+    }
+
+    private LoginUser buildLoginUserByToken(String token) {
+        try {
+            CommonResult<OAuth2CheckTokenRespDTO> accessTokenResult = oauth2Client.checkToken(token);
+            OAuth2CheckTokenRespDTO accessToken = accessTokenResult.getData();
+            if (accessToken == null) {
+                return null;
+            }
+            // 构建登录用户
+            return new LoginUser().setId(accessToken.getUserId()).setUserType(accessToken.getUserType())
+                    .setTenantId(accessToken.getTenantId()).setScopes(accessToken.getScopes())
+                    .setAccessToken(accessToken.getAccessToken());
+        } catch (Exception exception) {
+            // 校验 Token 不通过时，考虑到一些接口是无需登录的，所以直接返回 null 即可
+            return null;
+        }
+    }
+
+}
diff --git a/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/handler/AccessDeniedHandlerImpl.java b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/handler/AccessDeniedHandlerImpl.java
new file mode 100644
index 000000000..dccc35eb1
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/handler/AccessDeniedHandlerImpl.java
@@ -0,0 +1,44 @@
+package cn.iocoder.yudao.ssodemo.framework.core.handler;
+
+import cn.iocoder.yudao.ssodemo.client.dto.CommonResult;
+import cn.iocoder.yudao.ssodemo.framework.core.util.SecurityUtils;
+import cn.iocoder.yudao.ssodemo.framework.core.util.ServletUtils;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.access.AccessDeniedException;
+import org.springframework.security.web.access.AccessDeniedHandler;
+import org.springframework.security.web.access.ExceptionTranslationFilter;
+import org.springframework.stereotype.Component;
+
+import javax.servlet.FilterChain;
+import javax.servlet.ServletException;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+
+/**
+ * 访问一个需要认证的 URL 资源，已经认证（登录）但是没有权限的情况下，返回 {@link GlobalErrorCodeConstants#FORBIDDEN} 错误码。
+ *
+ * 补充：Spring Security 通过 {@link ExceptionTranslationFilter#handleAccessDeniedException(HttpServletRequest, HttpServletResponse, FilterChain, AccessDeniedException)} 方法，调用当前类
+ *
+ * @author 芋道源码
+ */
+@Component
+@SuppressWarnings("JavadocReference")
+@Slf4j
+public class AccessDeniedHandlerImpl implements AccessDeniedHandler {
+
+    @Override
+    public void handle(HttpServletRequest request, HttpServletResponse response, AccessDeniedException e)
+            throws IOException, ServletException {
+        // 打印 warn 的原因是，不定期合并 warn，看看有没恶意破坏
+        log.warn("[commence][访问 URL({}) 时，用户({}) 权限不够]", request.getRequestURI(),
+                SecurityUtils.getLoginUserId(), e);
+        // 返回 403
+        CommonResult<Object> result = new CommonResult<>();
+        result.setCode(HttpStatus.FORBIDDEN.value());
+        result.setMsg("没有该操作权限");
+        ServletUtils.writeJSON(response, result);
+    }
+
+}
diff --git a/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/handler/AuthenticationEntryPointImpl.java b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/handler/AuthenticationEntryPointImpl.java
new file mode 100644
index 000000000..241ff56f5
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/handler/AuthenticationEntryPointImpl.java
@@ -0,0 +1,36 @@
+package cn.iocoder.yudao.ssodemo.framework.core.handler;
+
+import cn.iocoder.yudao.ssodemo.client.dto.CommonResult;
+import cn.iocoder.yudao.ssodemo.framework.core.util.ServletUtils;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.HttpStatus;
+import org.springframework.security.core.AuthenticationException;
+import org.springframework.security.web.AuthenticationEntryPoint;
+import org.springframework.security.web.access.ExceptionTranslationFilter;
+import org.springframework.stereotype.Component;
+
+import javax.servlet.FilterChain;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+
+/**
+ * 访问一个需要认证的 URL 资源，但是此时自己尚未认证（登录）的情况下，返回 {@link GlobalErrorCodeConstants#UNAUTHORIZED} 错误码，从而使前端重定向到登录页
+ *
+ * 补充：Spring Security 通过 {@link ExceptionTranslationFilter#sendStartAuthentication(HttpServletRequest, HttpServletResponse, FilterChain, AuthenticationException)} 方法，调用当前类
+ */
+@Component
+@Slf4j
+@SuppressWarnings("JavadocReference") // 忽略文档引用报错
+public class AuthenticationEntryPointImpl implements AuthenticationEntryPoint {
+
+    @Override
+    public void commence(HttpServletRequest request, HttpServletResponse response, AuthenticationException e) {
+        log.debug("[commence][访问 URL({}) 时，没有登录]", request.getRequestURI(), e);
+        // 返回 401
+        CommonResult<Object> result = new CommonResult<>();
+        result.setCode(HttpStatus.UNAUTHORIZED.value());
+        result.setMsg("账号未登录");
+        ServletUtils.writeJSON(response, result);
+    }
+
+}
diff --git a/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/util/SecurityUtils.java b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/util/SecurityUtils.java
new file mode 100644
index 000000000..0352a4785
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/util/SecurityUtils.java
@@ -0,0 +1,103 @@
+package cn.iocoder.yudao.ssodemo.framework.core.util;
+
+import cn.iocoder.yudao.ssodemo.framework.core.LoginUser;
+import org.springframework.lang.Nullable;
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.Authentication;
+import org.springframework.security.core.context.SecurityContext;
+import org.springframework.security.core.context.SecurityContextHolder;
+import org.springframework.security.web.authentication.WebAuthenticationDetailsSource;
+import org.springframework.util.StringUtils;
+
+import javax.servlet.http.HttpServletRequest;
+import java.util.Collections;
+
+/**
+ * 安全服务工具类
+ *
+ * @author 芋道源码
+ */
+public class SecurityUtils {
+
+    public static final String AUTHORIZATION_BEARER = "Bearer";
+
+    private SecurityUtils() {}
+
+    /**
+     * 从请求中，获得认证 Token
+     *
+     * @param request 请求
+     * @param header 认证 Token 对应的 Header 名字
+     * @return 认证 Token
+     */
+    public static String obtainAuthorization(HttpServletRequest request, String header) {
+        String authorization = request.getHeader(header);
+        if (!StringUtils.hasText(authorization)) {
+            return null;
+        }
+        int index = authorization.indexOf(AUTHORIZATION_BEARER + " ");
+        if (index == -1) { // 未找到
+            return null;
+        }
+        return authorization.substring(index + 7).trim();
+    }
+
+    /**
+     * 获得当前认证信息
+     *
+     * @return 认证信息
+     */
+    public static Authentication getAuthentication() {
+        SecurityContext context = SecurityContextHolder.getContext();
+        if (context == null) {
+            return null;
+        }
+        return context.getAuthentication();
+    }
+
+    /**
+     * 获取当前用户
+     *
+     * @return 当前用户
+     */
+    @Nullable
+    public static LoginUser getLoginUser() {
+        Authentication authentication = getAuthentication();
+        if (authentication == null) {
+            return null;
+        }
+        return authentication.getPrincipal() instanceof LoginUser ? (LoginUser) authentication.getPrincipal() : null;
+    }
+
+    /**
+     * 获得当前用户的编号，从上下文中
+     *
+     * @return 用户编号
+     */
+    @Nullable
+    public static Long getLoginUserId() {
+        LoginUser loginUser = getLoginUser();
+        return loginUser != null ? loginUser.getId() : null;
+    }
+
+    /**
+     * 设置当前用户
+     *
+     * @param loginUser 登录用户
+     * @param request 请求
+     */
+    public static void setLoginUser(LoginUser loginUser, HttpServletRequest request) {
+        // 创建 Authentication，并设置到上下文
+        Authentication authentication = buildAuthentication(loginUser, request);
+        SecurityContextHolder.getContext().setAuthentication(authentication);
+    }
+
+    private static Authentication buildAuthentication(LoginUser loginUser, HttpServletRequest request) {
+        // 创建 UsernamePasswordAuthenticationToken 对象
+        UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(
+                loginUser, null, Collections.emptyList());
+        authenticationToken.setDetails(new WebAuthenticationDetailsSource().buildDetails(request));
+        return authenticationToken;
+    }
+
+}
diff --git a/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/util/ServletUtils.java b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/util/ServletUtils.java
new file mode 100644
index 000000000..50f1836f7
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/src/main/java/cn/iocoder/yudao/ssodemo/framework/core/util/ServletUtils.java
@@ -0,0 +1,28 @@
+package cn.iocoder.yudao.ssodemo.framework.core.util;
+
+import cn.hutool.extra.servlet.ServletUtil;
+import cn.hutool.json.JSONUtil;
+import org.springframework.http.MediaType;
+
+import javax.servlet.http.HttpServletResponse;
+
+/**
+ * 客户端工具类
+ *
+ * @author 芋道源码
+ */
+public class ServletUtils {
+
+    /**
+     * 返回 JSON 字符串
+     *
+     * @param response 响应
+     * @param object 对象，会序列化成 JSON 字符串
+     */
+    @SuppressWarnings("deprecation") // 必须使用 APPLICATION_JSON_UTF8_VALUE，否则会乱码
+    public static void writeJSON(HttpServletResponse response, Object object) {
+        String content = JSONUtil.toJsonStr(object);
+        ServletUtil.write(response, content, MediaType.APPLICATION_JSON_UTF8_VALUE);
+    }
+
+}
diff --git a/yudao-example/yudao-sso-demo-by-password/src/main/resources/application.yaml b/yudao-example/yudao-sso-demo-by-password/src/main/resources/application.yaml
new file mode 100644
index 000000000..a62cf97dc
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/src/main/resources/application.yaml
@@ -0,0 +1,2 @@
+server:
+  port: 18080
diff --git a/yudao-example/yudao-sso-demo-by-password/src/main/resources/static/index.html b/yudao-example/yudao-sso-demo-by-password/src/main/resources/static/index.html
new file mode 100644
index 000000000..8a5372901
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/src/main/resources/static/index.html
@@ -0,0 +1,154 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<meta charset="UTF-8">
+	<title>首页</title>
+	<!-- jQuery：操作 dom、发起请求等 -->
+	<script src="https://lf9-cdn-tos.bytecdntp.com/cdn/expire-1-M/jquery/2.1.2/jquery.min.js" type="application/javascript"></script>
+
+	<script type="application/javascript">
+
+    /**
+     * 跳转单点登录
+     */
+    function passwordLogin() {
+      window.location.href = '/login.html'
+    }
+
+    /**
+     * 修改昵称
+     */
+    function updateNickname() {
+      const nickname = prompt("请输入新的昵称", "");
+      if (!nickname) {
+        return;
+      }
+      // 更新用户的昵称
+      const accessToken = localStorage.getItem('ACCESS-TOKEN');
+      $.ajax({
+        url: "http://127.0.0.1:18080/user/update?nickname=" + nickname,
+        method: 'PUT',
+        headers: {
+          'Authorization': 'Bearer ' + accessToken
+        },
+        success: function (result) {
+          if (result.code !== 0) {
+            alert('更新昵称失败，原因：' + result.msg)
+            return;
+          }
+          alert('更新昵称成功！');
+          $('#nicknameSpan').html(nickname);
+        }
+      });
+    }
+
+    /**
+     * 刷新令牌
+     */
+    function refreshToken() {
+      const refreshToken = localStorage.getItem('REFRESH-TOKEN');
+      if (!refreshToken) {
+        alert("获取不到刷新令牌");
+        return;
+      }
+      $.ajax({
+        url: "http://127.0.0.1:18080/auth/refresh-token?refreshToken=" + refreshToken,
+        method: 'POST',
+        success: function (result) {
+          if (result.code !== 0) {
+            alert('刷新访问令牌失败，原因：' + result.msg)
+            return;
+          }
+          alert('更新访问令牌成功！');
+          $('#accessTokenSpan').html(result.data.access_token);
+
+          // 设置到 localStorage 中
+          localStorage.setItem('ACCESS-TOKEN', result.data.access_token);
+          localStorage.setItem('REFRESH-TOKEN', result.data.refresh_token);
+        }
+      });
+    }
+
+    /**
+     * 登出，删除访问令牌
+     */
+    function logout() {
+      const accessToken = localStorage.getItem('ACCESS-TOKEN');
+      if (!accessToken) {
+        location.reload();
+        return;
+      }
+      $.ajax({
+        url: "http://127.0.0.1:18080/auth/logout",
+        method: 'POST',
+        headers: {
+          'Authorization': 'Bearer ' + accessToken
+        },
+        success: function (result) {
+          if (result.code !== 0) {
+            alert('退出登录失败，原因：' + result.msg)
+            return;
+          }
+          alert('退出登录成功！');
+          // 删除 localStorage 中
+          localStorage.removeItem('ACCESS-TOKEN');
+          localStorage.removeItem('REFRESH-TOKEN');
+
+          location.reload();
+        }
+      });
+    }
+
+    $(function () {
+      const accessToken = localStorage.getItem('ACCESS-TOKEN');
+      // 情况一：未登录
+      if (!accessToken) {
+        $('#noLoginDiv').css("display", "block");
+        return;
+      }
+
+      // 情况二：已登录
+      $('#yesLoginDiv').css("display", "block");
+      $('#accessTokenSpan').html(accessToken);
+      // 获得登录用户的信息
+      $.ajax({
+        url: "http://127.0.0.1:18080/user/get",
+        method: 'GET',
+        headers: {
+          'Authorization': 'Bearer ' + accessToken
+        },
+        success: function (result) {
+          if (result.code !== 0) {
+            alert('获得个人信息失败，原因：' + result.msg)
+            return;
+          }
+          $('#nicknameSpan').html(result.data.nickname);
+        }
+      });
+    })
+	</script>
+</head>
+<body>
+<!-- 情况一：未登录：1）跳转 ruoyi-vue-pro 的 SSO 登录页 -->
+<div id="noLoginDiv" style="display: none">
+	您未登录，点击 <a href="#" onclick="passwordLogin()">跳转 </a> 账号密码登录
+</div>
+
+<!-- 情况二：已登录：1）展示用户信息；2）刷新访问令牌；3）退出登录 -->
+<div id="yesLoginDiv" style="display: none">
+	您已登录！<button onclick="logout()">退出登录</button> <br />
+	昵称：<span id="nicknameSpan"> 加载中... </span> <button onclick="updateNickname()">修改昵称</button> <br />
+	访问令牌：<span id="accessTokenSpan"> 加载中... </span> <button onclick="refreshToken()">刷新令牌</button> <br />
+</div>
+</body>
+<style>
+    body { /** 页面居中 */
+        border-radius: 20px;
+        height: 350px;
+        position: absolute;
+        left: 50%;
+        top: 50%;
+        transform: translate(-50%,-50%);
+    }
+</style>
+</html>
diff --git a/yudao-example/yudao-sso-demo-by-password/src/main/resources/static/login.html b/yudao-example/yudao-sso-demo-by-password/src/main/resources/static/login.html
new file mode 100644
index 000000000..4dd6a9105
--- /dev/null
+++ b/yudao-example/yudao-sso-demo-by-password/src/main/resources/static/login.html
@@ -0,0 +1,74 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+	<meta charset="UTF-8">
+	<title>登录</title>
+	<!-- jQuery：操作 dom、发起请求等 -->
+	<script src="https://lf9-cdn-tos.bytecdntp.com/cdn/expire-1-M/jquery/2.1.2/jquery.min.js" type="application/javascript"></script>
+
+	<script type="application/javascript">
+
+    /**
+     * 账号密码登录
+     */
+    function login() {
+      const clientId = 'yudao-sso-demo-by-password'; // 可以改写成，你的 clientId
+			const clientSecret = 'test'; // 可以改写成，你的 clientSecret
+			const grantType = 'password'; // 密码模式
+
+			// 账号 + 密码
+			const username = $('#username').val();
+			const password = $('#password').val();
+      if (username.length === 0 || password.length === 0) {
+        alert('账号或密码未输入');
+        return;
+			}
+
+      // 发起请求
+      $.ajax({
+        url: "http://127.0.0.1:48080/admin-api/system/oauth2/token?"
+          // 客户端
+					+ "client_id=" + clientId
+          + "&client_secret=" + clientSecret
+					// 密码模式的参数
+					+ "&grant_type=" + grantType
+					+ "&username=" + username
+					+ "&password=" + password
+					+ '&scope=user.read user.write',
+        method: 'POST',
+        headers: {
+					'tenant-id': '1', // 多租户编号，写死
+        },
+        success: function (result) {
+          if (result.code !== 0) {
+            alert('登录失败，原因：' + result.msg)
+            return;
+          }
+          // 设置到 localStorage 中
+          localStorage.setItem('ACCESS-TOKEN', result.data.access_token);
+          localStorage.setItem('REFRESH-TOKEN', result.data.refresh_token);
+
+          // 提示登录成功
+          alert('登录成功！点击确认，跳转回首页');
+          window.location.href = '/index.html';
+        }
+      });
+    }
+	</script>
+</head>
+<body>
+	账号：<input id="username" value="admin" /> <br />
+	密码：<input id="password" value="admin123" > <br />
+	<button style="float: right; margin-top: 5px;" onclick="login()">登录</button>
+</body>
+<style>
+    body { /** 页面居中 */
+        border-radius: 20px;
+        height: 350px;
+        position: absolute;
+        left: 50%;
+        top: 50%;
+        transform: translate(-50%,-50%);
+    }
+</style>
+</html>