基于@RestControllerAdvice与@ControllerAdvice的区别说明

< dependency >

     < groupId >org.springframework</ groupId >

     < artifactId >spring-web</ artifactId >

     < version >5.3.3</ version >

</ dependency >

@Target ({ElementType.TYPE})

@Retention (RetentionPolicy.RUNTIME)

@Documented

@Component

public @interface ControllerAdvice {

}

@Target ({ElementType.TYPE})

@Retention (RetentionPolicy.RUNTIME)

@Documented

@ControllerAdvice

@ResponseBody

public @interface RestControllerAdvice {

}

/**

  * 全局异常处理类

  */

@RestControllerAdvice

@Slf4j

public class GlobalExceptionHandler {

  @ExceptionHandler (Exception. class )

  public Result<String> ExceptionHandler(Exception e) {

   log.error( "出现异常:" , e);

   return Result.failed(e.getMessage());

  }

}

package com.galen.cloud.portal;

import org.springframework.boot.SpringApplication;

import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication (scanBasePackages = "com.galen.*" )

public class galenPortalApplication {

     public static void main(String[] args) {

         SpringApplication.run(galenPortalApplication. class , args);

     }

}

package com.galen测试数据mon.exception;

import com.galen测试数据mon.core.domain.R;

import org.slf4j.Logger;

import org.slf4j.LoggerFactory;

import org.springframework.core.annotation.AnnotationUtils;

import org.springframework.dao.DuplicateKeyException;

import org.springframework.http.HttpStatus;

import org.springframework.web.HttpRequestMethodNotSupportedException;

import org.springframework.web.bind.annotation.ExceptionHandler;

import org.springframework.web.bind.annotation.ResponseStatus;

import org.springframework.web.bind.annotation.RestControllerAdvice;

/**

  * 异常处理器

  * @author galen

  */

@RestControllerAdvice

public class GlobalExceptionHandler

{

     private Logger logger = LoggerFactory.getLogger(getClass());

     /**

      * 请求方式不支持

      */

     @ExceptionHandler ({HttpRequestMethodNotSupportedException. class })

     @ResponseStatus (code = HttpStatus.METHOD_NOT_ALLOWED)

     public R handleException(HttpRequestMethodNotSupportedException e)

     {

         logger.error(e.getMessage(), e);

         return R.error( "不支持' " + e.getMethod() + "'请求" );

     }

     /**

      * 拦截未知的运行时异常

      */

     @ExceptionHandler (RuntimeException. class )

     public R notFount(RuntimeException e)

     {

         if (AnnotationUtils.findAnnotation(e.getClass(), ResponseStatus. class ) != null )

         {

             throw e;

         }

         logger.error( "运行时异常:" , e);

         return R.error( "运行时异常:" + e.getMessage());

     }

     /**

      * 处理自定义异常

      */

     @ExceptionHandler (galenException. class )

     public R handleWindException(galenException e)

     {

         return R.error(e.getCode(), e.getMessage());

     }

     @ExceptionHandler (DuplicateKeyException. class )

     public R handleDuplicateKeyException(DuplicateKeyException e)

     {

         logger.error(e.getMessage(), e);

         return R.error( "数据库中已存在该记录" );

     }

     @ExceptionHandler (Exception. class )

     public R handleException(Exception e) throws Exception

     {

         logger.error(e.getMessage(), e);

         return R.error( "服务器错误，请联系管理员" );

     }

     /**

      * 捕获并处理未授权异常

      *

      * @param e 授权异常

      * @return 统一封装的结果类, 含有代码code和提示信息msg

      */

     @ExceptionHandler (UnauthorizedException. class )

     public R handle401(UnauthorizedException e)

     {

         return R.error( 401 , e.getMessage());

     }

     // 验证码错误

     @ExceptionHandler (ValidateCodeException. class )

     public R handleCaptcha(ValidateCodeException e)

     {

         return R.error(e.getMessage());

     }

}