用户模块：获取当前用户

src/main/java/com/huangge1199/picture/controller/UserController.java

@@ -5,12 +5,10 @@ import com.huangge1199.picture.exception.ErrorCode;
 import com.huangge1199.picture.exception.ThrowUtils;
 import com.huangge1199.picture.model.dto.user.UserLoginRequest;
 import com.huangge1199.picture.model.dto.user.UserRegisterRequest;
+import com.huangge1199.picture.model.entity.User;
 import com.huangge1199.picture.model.vo.LoginUserVO;
 import com.huangge1199.picture.service.UserService;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
 
 import javax.annotation.Resource;
 import javax.servlet.http.HttpServletRequest;
@@ -53,5 +51,15 @@ public class UserController {
         return R.ok(loginUserVO);
     }
 
+    /**
+     * 获取当前用户
+     */
+    @GetMapping("/get/login")
+    public R<LoginUserVO> getLoginUser(HttpServletRequest request) {
+        User user = userService.getLoginUser(request);
+        return R.ok(userService.getLoginUserVO(user));
+    }
+
+
 }
 

src/main/java/com/huangge1199/picture/service/UserService.java

@@ -49,4 +49,12 @@ public interface UserService extends IService<User> {
      */
     LoginUserVO getLoginUserVO(User user);
 
+    /**
+     * 获取当前登录用户
+     *
+     * @param request 请求
+     * @return 当前登录用户信息
+     */
+    User getLoginUser(HttpServletRequest request);
+
 }

src/main/java/com/huangge1199/picture/service/impl/UserServiceImpl.java

@@ -116,6 +116,23 @@ public class UserServiceImpl extends ServiceImpl<UserMapper, User>
         return loginUserVO;
     }
 
+    @Override
+    public User getLoginUser(HttpServletRequest request) {
+        // 先判断是否已登录
+        Object userObj = request.getSession().getAttribute(UserConstant.USER_LOGIN_STATE);
+        User currentUser = (User) userObj;
+        if (currentUser == null || currentUser.getId() == null) {
+            throw new MyException(ErrorCode.NOT_LOGIN_ERROR);
+        }
+        // 从数据库查询（追求性能的话可以注释，直接返回上述结果）
+        long userId = currentUser.getId();
+        currentUser = this.getById(userId);
+        if (currentUser == null) {
+            throw new MyException(ErrorCode.NOT_LOGIN_ERROR);
+        }
+        return currentUser;
+    }
+
 }