获取当前登录用户信息

src/main/java/com/example/springdemo/controller/AuthController.java

@@ -3,8 +3,15 @@ package com.example.springdemo.controller;
 import com.example.springdemo.security.dto.JwtAuthResponse;
 import com.example.springdemo.security.dto.LoginDto;
 import com.example.springdemo.service.AuthService;
+import com.example.springdemo.utils.Result;
 import jakarta.annotation.Resource;
+import jakarta.servlet.http.HttpServletRequest;
+import org.jetbrains.annotations.NotNull;
 import org.springframework.http.ResponseEntity;
+import org.springframework.security.authentication.UsernamePasswordAuthenticationToken;
+import org.springframework.security.core.userdetails.UserDetails;
+import org.springframework.security.core.userdetails.UserDetailsService;
+import org.springframework.util.StringUtils;
 import org.springframework.web.bind.annotation.PostMapping;
 import org.springframework.web.bind.annotation.RequestBody;
 import org.springframework.web.bind.annotation.RequestMapping;
@@ -16,6 +23,9 @@ public class AuthController {
     @Resource
     private AuthService authService;
 
+    @Resource
+    private UserDetailsService userDetailsService;
+
     // Login REST API
     @PostMapping("/login")
     public ResponseEntity<JwtAuthResponse> authenticate(@RequestBody LoginDto loginDto) {
@@ -25,4 +35,37 @@ public class AuthController {
 
         return ResponseEntity.ok(jwtAuthResponse);
     }
-}
+
+    @PostMapping("/profile")
+    public Result<Object> profile(@NotNull HttpServletRequest request) {
+        String token;
+        String bearerToken = request.getHeader("Authorization");
+        Result<Object> result = new Result<>();
+        // 从 request 获取 JWT token
+        if (StringUtils.hasText(bearerToken) && bearerToken.startsWith("Bearer ")) {
+            token = bearerToken.substring(7);
+        } else {
+            token = "";
+        }
+        // 校验 token
+        if (StringUtils.hasText(token) && authService.getJwtTokenProvider().validateToken(token)) {
+            // 从 token 获取 username
+            String username = authService.getJwtTokenProvider().getUsername(token);
+            // 加载与 token 关联的用户
+            UserDetails userDetails = userDetailsService.loadUserByUsername(username);
+            UsernamePasswordAuthenticationToken authenticationToken = new UsernamePasswordAuthenticationToken(
+                    userDetails,
+                    null,
+                    userDetails.getAuthorities()
+            );
+            result.setStatus(200);
+            result.setMessage("success");
+            result.setData(authenticationToken);
+        } else {
+            result.setStatus(401);
+            result.setMessage("fail");
+        }
+        return result;
+    }
+
+}

src/main/java/com/example/springdemo/service/AuthService.java

@@ -1,7 +1,10 @@
 package com.example.springdemo.service;
 
 import com.example.springdemo.security.dto.LoginDto;
+import com.example.springdemo.security.utils.JwtTokenProvider;
 
 public interface AuthService {
     String login(LoginDto loginDto);
+
+    JwtTokenProvider getJwtTokenProvider();
 }

src/main/java/com/example/springdemo/serviceImpl/AuthServiceImpl.java

@@ -26,4 +26,9 @@ public class AuthServiceImpl implements AuthService {
         SecurityContextHolder.getContext().setAuthentication(authentication);
         return jwtTokenProvider.generateToken(authentication);
     }
+
+    @Override
+    public JwtTokenProvider getJwtTokenProvider() {
+        return jwtTokenProvider;
+    }
 }