diff --git a/ruoyi-generator/src/main/resources/vm/java/serviceImpl.java.vm b/ruoyi-generator/src/main/resources/vm/java/serviceImpl.java.vm
deleted file mode 100644
index 05a3de84c..000000000
--- a/ruoyi-generator/src/main/resources/vm/java/serviceImpl.java.vm
+++ /dev/null
@@ -1,109 +0,0 @@
-package ${packageName}.service.impl;
-
-import java.util.List;
-#foreach ($column in $columns)
-#if($column.javaField == 'createTime' || $column.javaField == 'updateTime')
-import com.ruoyi.common.utils.DateUtils;
-#break
-#end
-#end
-import org.springframework.beans.factory.annotation.Autowired;
-import org.springframework.stereotype.Service;
-import ${packageName}.mapper.${ClassName}Mapper;
-import ${packageName}.domain.${ClassName};
-import ${packageName}.service.I${ClassName}Service;
-
-/**
- * ${functionName}Service业务层处理
- * 
- * @author ${author}
- * @date ${datetime}
- */
-@Service
-public class ${ClassName}ServiceImpl implements I${ClassName}Service 
-{
-    @Autowired
-    private ${ClassName}Mapper ${className}Mapper;
-
-    /**
-     * 查询${functionName}
-     * 
-     * @param ${pkColumn.javaField} ${functionName}ID
-     * @return ${functionName}
-     */
-    @Override
-    public ${ClassName} select${ClassName}ById(${pkColumn.javaType} ${pkColumn.javaField})
-    {
-        return ${className}Mapper.select${ClassName}ById(${pkColumn.javaField});
-    }
-
-    /**
-     * 查询${functionName}列表
-     * 
-     * @param ${className} ${functionName}
-     * @return ${functionName}
-     */
-    @Override
-    public List<${ClassName}> select${ClassName}List(${ClassName} ${className})
-    {
-        return ${className}Mapper.select${ClassName}List(${className});
-    }
-
-    /**
-     * 新增${functionName}
-     * 
-     * @param ${className} ${functionName}
-     * @return 结果
-     */
-    @Override
-    public int insert${ClassName}(${ClassName} ${className})
-    {
-#foreach ($column in $columns)
-#if($column.javaField == 'createTime')
-        ${className}.setCreateTime(DateUtils.getNowDate());
-#end
-#end
-        return ${className}Mapper.insert${ClassName}(${className});
-    }
-
-    /**
-     * 修改${functionName}
-     * 
-     * @param ${className} ${functionName}
-     * @return 结果
-     */
-    @Override
-    public int update${ClassName}(${ClassName} ${className})
-    {
-#foreach ($column in $columns)
-#if($column.javaField == 'updateTime')
-        ${className}.setUpdateTime(DateUtils.getNowDate());
-#end
-#end
-        return ${className}Mapper.update${ClassName}(${className});
-    }
-
-    /**
-     * 批量删除${functionName}
-     * 
-     * @param ${pkColumn.javaField}s 需要删除的${functionName}ID
-     * @return 结果
-     */
-    @Override
-    public int delete${ClassName}ByIds(${pkColumn.javaType}[] ${pkColumn.javaField}s)
-    {
-        return ${className}Mapper.delete${ClassName}ByIds(${pkColumn.javaField}s);
-    }
-
-    /**
-     * 删除${functionName}信息
-     * 
-     * @param ${pkColumn.javaField} ${functionName}ID
-     * @return 结果
-     */
-    @Override
-    public int delete${ClassName}ById(${pkColumn.javaType} ${pkColumn.javaField})
-    {
-        return ${className}Mapper.delete${ClassName}ById(${pkColumn.javaField});
-    }
-}
diff --git a/src/main/java/cn/iocoder/dashboard/modules/system/enums/SysErrorCodeConstants.java b/src/main/java/cn/iocoder/dashboard/modules/system/enums/SysErrorCodeConstants.java
index 1bbde5784..70703bda4 100644
--- a/src/main/java/cn/iocoder/dashboard/modules/system/enums/SysErrorCodeConstants.java
+++ b/src/main/java/cn/iocoder/dashboard/modules/system/enums/SysErrorCodeConstants.java
@@ -75,4 +75,7 @@ public interface SysErrorCodeConstants {
     // ========== 文件 1002009000 ==========
     ErrorCode FILE_PATH_EXISTS = new ErrorCode(1002009001, "文件路径已经存在");
 
+    // ========== 字典类型（测试） 1002010000 ==========
+    ErrorCode TEST_DEMO_NOT_EXISTS = new ErrorCode(1002010000, "字典类型不存在}");
+
 }
diff --git a/src/main/java/cn/iocoder/dashboard/modules/system/service/test/impl/SysTestDemoServiceImpl.java b/src/main/java/cn/iocoder/dashboard/modules/system/service/test/impl/SysTestDemoServiceImpl.java
new file mode 100644
index 000000000..2b1df0250
--- /dev/null
+++ b/src/main/java/cn/iocoder/dashboard/modules/system/service/test/impl/SysTestDemoServiceImpl.java
@@ -0,0 +1,80 @@
+package cn.iocoder.dashboard.modules.system.service.test.impl;
+
+import cn.iocoder.dashboard.common.exception.util.ServiceExceptionUtil;
+import cn.iocoder.dashboard.common.pojo.PageResult;
+import cn.iocoder.dashboard.modules.system.controller.test.vo.SysTestDemoCreateReqVO;
+import cn.iocoder.dashboard.modules.system.controller.test.vo.SysTestDemoPageReqVO;
+import cn.iocoder.dashboard.modules.system.controller.test.vo.SysTestDemoUpdateReqVO;
+import cn.iocoder.dashboard.modules.system.convert.test.SysTestDemoConvert;
+import cn.iocoder.dashboard.modules.system.dal.mysql.dao.test.SysTestDemoMapper;
+import cn.iocoder.dashboard.modules.system.dal.mysql.dataobject.test.SysTestDemoDO;
+import cn.iocoder.dashboard.modules.system.service.test.SysTestDemoService;
+import org.springframework.stereotype.Service;
+import org.springframework.validation.annotation.Validated;
+
+import javax.annotation.Resource;
+import java.util.Collection;
+import java.util.List;
+
+import static cn.iocoder.dashboard.modules.system.enums.SysErrorCodeConstants.TEST_DEMO_NOT_EXISTS;
+
+/**
+* 字典类型 Service 实现类
+*
+* @author 芋艿
+*/
+@Service
+@Validated
+public class SysTestDemoServiceImpl implements SysTestDemoService {
+
+    @Resource
+    private SysTestDemoMapper testDemoMapper;
+
+    @Override
+    public Long createTestDemo(SysTestDemoCreateReqVO createReqVO) {
+        // 插入
+        SysTestDemoDO testDemo = SysTestDemoConvert.INSTANCE.convert(createReqVO);
+        testDemoMapper.insert(testDemo);
+        // 返回
+        return testDemo.getId();
+    }
+
+    @Override
+    public void updateTestDemo(SysTestDemoUpdateReqVO updateReqVO) {
+        // 校验存在
+        this.validateTestDemoExists(updateReqVO.getId());
+        // 更新
+        SysTestDemoDO updateObj = SysTestDemoConvert.INSTANCE.convert(updateReqVO);
+        testDemoMapper.updateById(updateObj);
+    }
+
+    @Override
+    public void deleteTestDemo(Long id) {
+        // 校验存在
+        this.validateTestDemoExists(id);
+        // 更新
+        testDemoMapper.deleteById(id);
+    }
+
+    private void validateTestDemoExists(Long id) {
+        if (testDemoMapper.selectById(id) == null) {
+            throw ServiceExceptionUtil.exception(TEST_DEMO_NOT_EXISTS);
+        }
+    }
+
+    @Override
+    public SysTestDemoDO getTestDemo(Long id) {
+        return testDemoMapper.selectById(id);
+    }
+
+    @Override
+    public List<SysTestDemoDO> getTestDemoList(Collection<Long> ids) {
+        return testDemoMapper.selectBatchIds(ids);
+    }
+
+	@Override
+    public PageResult<SysTestDemoDO> getTestDemoPage(SysTestDemoPageReqVO pageReqVO) {
+		return testDemoMapper.selectPage(pageReqVO);
+    }
+
+}
diff --git a/src/main/java/cn/iocoder/dashboard/modules/tool/service/codegen/impl/ToolCodegenEngine.java b/src/main/java/cn/iocoder/dashboard/modules/tool/service/codegen/impl/ToolCodegenEngine.java
index 56fb4a766..8d4559692 100644
--- a/src/main/java/cn/iocoder/dashboard/modules/tool/service/codegen/impl/ToolCodegenEngine.java
+++ b/src/main/java/cn/iocoder/dashboard/modules/tool/service/codegen/impl/ToolCodegenEngine.java
@@ -3,6 +3,7 @@ package cn.iocoder.dashboard.modules.tool.service.codegen.impl;
 import cn.hutool.extra.template.TemplateConfig;
 import cn.hutool.extra.template.TemplateEngine;
 import cn.hutool.extra.template.TemplateUtil;
+import cn.iocoder.dashboard.common.exception.util.ServiceExceptionUtil;
 import cn.iocoder.dashboard.common.pojo.PageParam;
 import cn.iocoder.dashboard.common.pojo.PageResult;
 import cn.iocoder.dashboard.framework.mybatis.core.dataobject.BaseDO;
@@ -59,11 +60,12 @@ public class ToolCodegenEngine {
         // 全局 Java Bean
         globalBindingMap.put("PageResultClassName", PageResult.class.getName());
         globalBindingMap.put("DateUtilsClassName", DateUtils.class.getName());
+        globalBindingMap.put("ServiceExceptionUtilClassName", ServiceExceptionUtil.class.getName());
         // VO 类，独有字段
         globalBindingMap.put("PageParamClassName", PageParam.class.getName());
         // DO 类，独有字段
         globalBindingMap.put("baseDOFields", ToolCodegenBuilder.BASE_DO_FIELDS);
-        globalBindingMap.put("baseDOClassName", BaseDO.class.getName());
+        globalBindingMap.put("BaseDOClassName", BaseDO.class.getName());
         globalBindingMap.put("QueryWrapperClassName", QueryWrapperX.class.getName());
         globalBindingMap.put("BaseMapperClassName", BaseMapperX.class.getName());
     }
@@ -92,8 +94,8 @@ public class ToolCodegenEngine {
 //        String result = templateEngine.getTemplate("codegen/controller/vo/respVO.vm").render(bindingMap);
 //        String result = templateEngine.getTemplate("codegen/convert/convert.vm").render(bindingMap);
 //        String result = templateEngine.getTemplate("codegen/enums/errorcode.vm").render(bindingMap);
-        String result = templateEngine.getTemplate("codegen/service/service.vm").render(bindingMap);
-//        String result = templateEngine.getTemplate("codegen/service/serviceImpl.vm").render(bindingMap);
+//        String result = templateEngine.getTemplate("codegen/service/service.vm").render(bindingMap);
+        String result = templateEngine.getTemplate("codegen/service/serviceImpl.vm").render(bindingMap);
         System.out.println(result);
     }
 
diff --git a/src/main/resources/codegen/dal/do.vm b/src/main/resources/codegen/dal/do.vm
index 6fd37b13c..70c8cc02c 100644
--- a/src/main/resources/codegen/dal/do.vm
+++ b/src/main/resources/codegen/dal/do.vm
@@ -3,7 +3,7 @@ package ${basePackage}.${table.moduleName}.dal.mysql.dataobject.${table.business
 import lombok.*;
 import java.util.*;
 import com.baomidou.mybatisplus.annotation.*;
-import ${baseDOClassName};
+import ${BaseDOClassName};
 
 /**
 * ${table.classComment} DO
diff --git a/src/main/resources/codegen/enums/errorcode.vm b/src/main/resources/codegen/enums/errorcode.vm
index f6f623c17..099a1d228 100644
--- a/src/main/resources/codegen/enums/errorcode.vm
+++ b/src/main/resources/codegen/enums/errorcode.vm
@@ -1,2 +1,2 @@
-// ========== ${table.classCommet} TODO 补充编号 ==========
-ErrorCode ${simpleClassName_underlineCase.toUpperCase()}_NOT_FOUND = new ErrorCode(TODO 补充编号, "${table.classComment}不存在}");
+// ========== ${table.classComment} TODO 补充编号 ==========
+ErrorCode ${simpleClassName_underlineCase.toUpperCase()}_NOT_EXISTS = new ErrorCode(TODO 补充编号, "${table.classComment}不存在}");
diff --git a/src/main/resources/codegen/service/serviceImpl.vm b/src/main/resources/codegen/service/serviceImpl.vm
index d129c4f38..5f883885a 100644
--- a/src/main/resources/codegen/service/serviceImpl.vm
+++ b/src/main/resources/codegen/service/serviceImpl.vm
@@ -10,6 +10,12 @@ import ${basePackage}.${table.moduleName}.controller.${table.businessName}.vo.*;
 import ${basePackage}.${table.moduleName}.dal.mysql.dataobject.${table.businessName}.${table.className}DO;
 import ${PageResultClassName};
 
+import ${basePackage}.${table.moduleName}.convert.${table.businessName}.${table.className}Convert;
+import ${basePackage}.${table.moduleName}.dal.mysql.dao.${table.businessName}.${table.className}Mapper;
+import ${basePackage}.${table.moduleName}.service.${table.businessName}.${table.className}Service;
+
+import ${ServiceExceptionUtilClassName};
+
 import static ${basePackage}.${table.moduleName}.enums.${simpleModuleName.substring(0,1).toUpperCase()}${simpleModuleName.substring(1)}ErrorCodeConstants.*;
 
 /**
@@ -17,14 +23,58 @@ import static ${basePackage}.${table.moduleName}.enums.${simpleModuleName.substr
 *
 * @author ${table.author}
 */
+@Service
 @Validated
-public class ${table.className}ServiceImpl implements {table.className}Service {
+public class ${table.className}ServiceImpl implements ${table.className}Service {
 
     @Resource
     private ${table.className}Mapper ${classNameVar}Mapper;
 
     @Override
-    public ${primaryColumn.javaType} create${simpleClassName}(@Valid ${table.className}CreateReqVO createReqVO) {
+    public ${primaryColumn.javaType} create${simpleClassName}(${table.className}CreateReqVO createReqVO) {
+        // 插入
+        ${table.className}DO ${classNameVar} = ${table.className}Convert.INSTANCE.convert(createReqVO);
+        ${classNameVar}Mapper.insert(${classNameVar});
+        // 返回
+        return ${classNameVar}.getId();
+    }
+
+    @Override
+    public void update${simpleClassName}(${table.className}UpdateReqVO updateReqVO) {
+        // 校验存在
+        this.validate${simpleClassName}Exists(updateReqVO.getId());
+        // 更新
+        ${table.className}DO updateObj = ${table.className}Convert.INSTANCE.convert(updateReqVO);
+        ${classNameVar}Mapper.updateById(updateObj);
+    }
+
+    @Override
+    public void delete${simpleClassName}(${primaryColumn.javaType} id) {
+        // 校验存在
+        this.validate${simpleClassName}Exists(id);
+        // 更新
+        ${classNameVar}Mapper.deleteById(id);
+    }
+
+    private void validate${simpleClassName}Exists(${primaryColumn.javaType} id) {
+        if (${classNameVar}Mapper.selectById(id) == null) {
+            throw ServiceExceptionUtil.exception(${simpleClassName_underlineCase.toUpperCase()}_NOT_EXISTS);
+        }
+    }
+
+    @Override
+    public ${table.className}DO get${simpleClassName}(${primaryColumn.javaType} id) {
+        return ${classNameVar}Mapper.selectById(id);
+    }
+
+    @Override
+    public List<${table.className}DO> get${simpleClassName}List(Collection<${primaryColumn.javaType}> ids) {
+        return ${classNameVar}Mapper.selectBatchIds(ids);
+    }
+
+	@Override
+    public PageResult<${table.className}DO> get${simpleClassName}Page(${table.className}PageReqVO pageReqVO) {
+		return ${classNameVar}Mapper.selectPage(pageReqVO);
     }
 
 }