現象
在 WebSecurityConfigurerAdapter 配置了如下代碼：
// 自定義未授權和未登錄異常
http.exceptionHandling()
.accessDeniedHandler(new RestAccessDeniedHandler())
.authenticationEntryPoint(new RestAuthenticationEntryPoint());
在 Controller 層 REST 接口中添加有 @PreAuthorize 注解：
@PreAuthorize(value = "hasAuthority('Users.Update')")
@GetMapping("/hello")
public ResponseEntity<?> hello(@RequestParam(value = "name", required = false, defaultValue = "Tom") String name) {
return ResponseEntity.ok(RestResponse.buildResponse("Hi: " + name));
}
訪問接口 /hello，報服務端 500 錯誤，沒有執行我們設置的 accessDeniedHandler 來處理權限不足的異常。
原因
當全局異常處理和 @PreAuthorize 注解結合使用時，拋出 AccessDeniedException 異常，不會被 accessDeniedHandler 捕獲，而是會被全局異常捕獲。全局異常處理 AccessDeniedException 的相關示例代碼：
@Slf4j
@RestControllerAdvice
public class GlobalExceptionHandler {
@ExceptionHandler(Exception.class)
public ResponseEntity<RestResponse<Object>> handleException(Exception exception) {
String message = exception.getLocalizedMessage();
log.error("全局異常捕獲Exception：{}", message, exception);
HttpStatus httpStatus = HttpStatus.INTERNAL_SERVER_ERROR;
if (exception instanceof BadCredentialsException) {
httpStatus = HttpStatus.UNAUTHORIZED;
}
if (exception instanceof HttpRequestMethodNotSupportedException) {
httpStatus = HttpStatus.METHOD_NOT_ALLOWED;
}
return RestResponse.buildError(httpStatus, message);
}
@ExceptionHandler(CommonException.class)
public ResponseEntity<RestResponse<Object>> handleException(CommonException exception) {
String message = exception.getLocalizedMessage();
log.error("全局異常捕獲CommonException：{}", message);
return RestResponse.buildError(exception.getBusinessStatus(), message);
}
@ExceptionHandler(AccessDeniedException.class)
public ResponseEntity<RestResponse<Object>> handleException(AccessDeniedException exception) {
String message = exception.getLocalizedMessage();
log.error("全局異常捕獲AccessDeniedException：{}", message);
return RestResponse.buildError(HttpStatus.FORBIDDEN, Forbidden);
}
}
如果需要被 accessDeniedHandler 捕獲處理，則需要這么寫 WebSecurityConfigurerAdapter 的代碼：
http.cors().and()
.authorizeRequests().antMatchers("/hello0").permitAll()
// 注意hasRole、hasAuthority 如果出現異常，會調用設置的 accessDeniedHandler 方法
.antMatchers("/hello").hasAuthority("Users.Update")
.anyRequest().authenticated();
// 自定義未授權和未登錄異常
http.exceptionHandling()
.accessDeniedHandler(new RestAccessDeniedHandler())
.authenticationEntryPoint(new RestAuthenticationEntryPoint());
參考資料：