fix(auth): delegate login failure handling to exception resolver

- Replace manual JSON response in RESTAuthenticationFailureHandler with HandlerExceptionResolver
- Change LoginException status from INTERNAL_SERVER_ERROR to UNPROCESSABLE_ENTITY
- Update config server URI from IP to hostname

src/main/java/com/keymobile/sso/conf/RESTAuthenticationFailureHandler.java

 package com.keymobile.sso.conf;
 
-import com.fasterxml.jackson.databind.ObjectMapper;
+import com.keymobile.sso.exception.LoginException;
 import jakarta.servlet.ServletException;
 import jakarta.servlet.http.HttpServletRequest;
 import jakarta.servlet.http.HttpServletResponse;
-import org.springframework.http.HttpStatus;
-import org.springframework.http.MediaType;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
 import org.springframework.security.core.AuthenticationException;
 import org.springframework.security.web.authentication.SimpleUrlAuthenticationFailureHandler;
 import org.springframework.stereotype.Component;
+import org.springframework.web.servlet.HandlerExceptionResolver;
 
 import java.io.IOException;
-import java.util.HashMap;
-import java.util.Map;
 
 @Component
 public class RESTAuthenticationFailureHandler extends SimpleUrlAuthenticationFailureHandler {
 
-    private final ObjectMapper objectMapper = new ObjectMapper();
+    @Autowired
+    @Qualifier("handlerExceptionResolver")
+    private HandlerExceptionResolver resolver;
 
     @Override
     public void onAuthenticationFailure(HttpServletRequest request, HttpServletResponse response,
                                         AuthenticationException exception) throws IOException, ServletException {
-        response.setStatus(HttpStatus.UNAUTHORIZED.value());
-        response.setContentType(MediaType.APPLICATION_JSON_VALUE);
-        response.setCharacterEncoding("UTF-8");
-
-        Map<String, Object> errorResponse = new HashMap<>();
-        errorResponse.put("status", HttpStatus.UNAUTHORIZED.value());
-        errorResponse.put("timestamp", System.currentTimeMillis());
-        errorResponse.put("message", "Invalid credentials");
-        errorResponse.put("cnMessage", "用户名或密码错误");
-
-        objectMapper.writeValue(response.getWriter(), errorResponse);
+        resolver.resolveException(request, response, null, new LoginException("Login failed"));
     }
-
 }
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src/main/java/com/keymobile/sso/exception/RestExceptionHandler.java

@@ -18,7 +18,7 @@ public class RestExceptionHandler extends ResponseEntityExceptionHandler {
 
     @ExceptionHandler(LoginException.class)
     protected ResponseEntity<Object> handleLoginException(LoginException ex, WebRequest request) {
-        ApiError apiError = new ApiError(HttpStatus.INTERNAL_SERVER_ERROR, ex.getMessage(), "用户名或密码错误", ex);
+        ApiError apiError = new ApiError(HttpStatus.UNPROCESSABLE_ENTITY, ex.getMessage(), "用户名或密码错误", ex);
         return buildResponseEntity(apiError);
     }
 

src/main/resources/bootstrap.yml

@@ -5,4 +5,4 @@ spring:
     name: auth
   cloud:
     config:
-      uri: http://192.168.0.39:8082
+      uri: http://c0:8082
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