一、单个controller范围的异常处理
1 package com.xxx.secondboot.web; 2 3 import org.springframework.web.bind.annotation.ExceptionHandler; 4 import org.springframework.web.bind.annotation.RequestMapping; 5 import org.springframework.web.bind.annotation.RequestMethod; 6 import org.springframework.web.bind.annotation.RestController; 7 8 import com.xxx.secondboot.exception.MyExceptionResponse; 9 10 import io.swagger.annotations.Api;11 12 @Api("测试controllerAdvice和全局异常处理")13 @RestController14 @RequestMapping("/advice1")15 public class AdviceController {16 17 @RequestMapping(value = "/test1", method = RequestMethod.GET)18 public String test1() {19 throw new RuntimeException("advice1 - exception1");20 }21 22 @RequestMapping(value = "/test2", method = RequestMethod.GET)23 public String test2() {24 throw new RuntimeException("advice1 - exception2");25 }26 27 @ExceptionHandler(RuntimeException.class)28 public MyExceptionResponse exceptionHandler() {29 MyExceptionResponse resp = new MyExceptionResponse();30 resp.setCode(300);31 resp.setMsg("exception-Handler");32 return resp;33 }34 35 }
说明:
- 在controller中加入被@ExceptionHandler修饰的类即可(在该注解中指定该方法需要处理的那些异常类)
- 该异常处理方法只在当前的controller中起作用
二、全部controller范围内起作用的异常处理(全局异常处理)
1、全局异常处理类
1 package com.xxx.secondboot.web; 2 3 import javax.servlet.http.HttpServletResponse; 4 5 import org.springframework.web.bind.annotation.ControllerAdvice; 6 import org.springframework.web.bind.annotation.ExceptionHandler; 7 import org.springframework.web.bind.annotation.ResponseBody; 8 import org.springframework.web.bind.annotation.RestController; 9 10 import com.xxx.secondboot.exception.MyExceptionResponse;11 import com.xxx.secondboot.exception.MyRuntimeException;12 13 //@ControllerAdvice(annotations=RestController.class)14 //@ControllerAdvice(basePackages={"com.xxx","com.ooo"})15 @ControllerAdvice16 public class GlobalExceptionHandler {17 @ExceptionHandler(RuntimeException.class)18 // @ExceptionHandler(value={RuntimeException.class,MyRuntimeException.class})19 // @ExceptionHandler//处理所有异常20 @ResponseBody //在返回自定义相应类的情况下必须有,这是@ControllerAdvice注解的规定21 public MyExceptionResponse exceptionHandler(RuntimeException e, HttpServletResponse response) {22 MyExceptionResponse resp = new MyExceptionResponse();23 resp.setCode(300);24 resp.setMsg("exception-Handler");25 // response.setStatus(600);26 return resp;27 }28 }
说明:
- @ControllerAdvice是controller的一个辅助类,最常用的就是作为全局异常处理的切面类
- @ControllerAdvice可以指定扫描范围
- @ControllerAdvice约定了几种可行的返回值,如果是直接返回model类的话,需要使用@ResponseBody进行json转换
2、controller
1 package com.xxx.secondboot.web; 2 3 import org.springframework.web.bind.annotation.RequestMapping; 4 import org.springframework.web.bind.annotation.RequestMethod; 5 import org.springframework.web.bind.annotation.RestController; 6 7 import io.swagger.annotations.Api; 8 9 @Api("测试controllerAdvice和全局异常处理")10 @RestController11 @RequestMapping("/advice1")12 public class AdviceController {13 14 @RequestMapping(value = "/test1", method = RequestMethod.GET)15 public String test1() {16 throw new RuntimeException("advice1 - exception1");17 }18 19 @RequestMapping(value = "/test2", method = RequestMethod.GET)20 public String test2() {21 throw new RuntimeException("advice1 - exception2");22 }23 24 // @ExceptionHandler(RuntimeException.class)25 // public MyExceptionResponse exceptionHandler() {26 // MyExceptionResponse resp = new MyExceptionResponse();27 // resp.setCode(300);28 // resp.setMsg("exception-Handler");29 // return resp;30 // }31 32 }
原标题:第二十三章 springboot + 全局异常处理
关键词:Spring