feat: 设置页面修改用户名，需要重新发放token

src/main/java/com/openisle/controller/UserController.java

@@ -28,6 +28,7 @@ public class UserController {
     private final PostReadService postReadService;
     private final UserVisitService userVisitService;
     private final LevelService levelService;
+    private final JwtService jwtService;
 
     @Value("${app.upload.check-type:true}")
     private boolean checkImageType;
@@ -73,10 +74,13 @@ public class UserController {
     }
 
     @PutMapping("/me")
-    public ResponseEntity<UserDto> updateProfile(@RequestBody UpdateProfileDto dto,
+    public ResponseEntity<?> updateProfile(@RequestBody UpdateProfileDto dto,
                                                  Authentication auth) {
         User user = userService.updateProfile(auth.getName(), dto.getUsername(), dto.getIntroduction());
-        return ResponseEntity.ok(toDto(user, auth));
+        return ResponseEntity.ok(Map.of(
+                "token", jwtService.generateToken(user.getUsername()),
+                "user", toDto(user, auth)
+        ));
     }
 
     @PostMapping("/me/signin")

src/main/java/com/openisle/service/SubscriptionService.java

@@ -122,9 +122,13 @@ public class SubscriptionService {
         if (subscriberName == null || targetName == null || subscriberName.equals(targetName)) {
             return false;
         }
-        User subscriber = userRepo.findByUsername(subscriberName).orElseThrow();
-        User target = findUser(targetName).orElseThrow();
-        return userSubRepo.findBySubscriberAndTarget(subscriber, target).isPresent();
+        Optional<User> subscriber = userRepo.findByUsername(subscriberName);
+        Optional<User> target = findUser(targetName);
+        if (subscriber.isEmpty() || target.isEmpty()) {
+            // 修改个人信息会出现，先不抛出错误
+            return false;
+        }
+        return userSubRepo.findBySubscriberAndTarget(subscriber.get(), target.get()).isPresent();
     }
 
     public boolean isPostSubscribed(String username, Long postId) {