一、单个controller范围的异常处理
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package com.xxx.secondboot.web; import org.springframework.web.bind.annotation.ExceptionHandler; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RestController; import com.xxx.secondboot.exception.MyExceptionResponse; import io.swagger.annotations.Api; @Api ( "测试controllerAdvice和全局异常处理" ) @RestController @RequestMapping ( "/advice1" ) public class AdviceController { @RequestMapping (value = "/test1" , method = RequestMethod.GET) public String test1() { throw new RuntimeException( "advice1 - exception1" ); } @RequestMapping (value = "/test2" , method = RequestMethod.GET) public String test2() { throw new RuntimeException( "advice1 - exception2" ); } @ExceptionHandler (RuntimeException. class ) public MyExceptionResponse exceptionHandler() { MyExceptionResponse resp = new MyExceptionResponse(); resp.setCode( 300 ); resp.setMsg( "exception-Handler" ); return resp; } } |
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
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package com.xxx.secondboot.web; import javax.servlet.http.HttpServletResponse; import org.springframework.web.bind.annotation.ControllerAdvice; import org.springframework.web.bind.annotation.ExceptionHandler; import org.springframework.web.bind.annotation.ResponseBody; import org.springframework.web.bind.annotation.RestController; import com.xxx.secondboot.exception.MyExceptionResponse; import com.xxx.secondboot.exception.MyRuntimeException; //@ControllerAdvice(annotations=RestController.class) //@ControllerAdvice(basePackages={"com.xxx","com.ooo"}) @ControllerAdvice public class GlobalExceptionHandler { @ExceptionHandler (RuntimeException. class ) // @ExceptionHandler(value={RuntimeException.class,MyRuntimeException.class}) // @ExceptionHandler//处理所有异常 @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 public MyExceptionResponse exceptionHandler(RuntimeException e, HttpServletResponse response) { MyExceptionResponse resp = new MyExceptionResponse(); resp.setCode( 300 ); resp.setMsg( "exception-Handler" ); // response.setStatus(600); return resp; } } |
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
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@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
- 返回String,表示跳到某个view
- 返回modelAndView
- 返回model + @ResponseBody
2、controller
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package com.xxx.secondboot.web; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.bind.annotation.RequestMethod; import org.springframework.web.bind.annotation.RestController; import io.swagger.annotations.Api; @Api ( "测试controllerAdvice和全局异常处理" ) @RestController @RequestMapping ( "/advice1" ) public class AdviceController { @RequestMapping (value = "/test1" , method = RequestMethod.GET) public String test1() { throw new RuntimeException( "advice1 - exception1" ); } @RequestMapping (value = "/test2" , method = RequestMethod.GET) public String test2() { throw new RuntimeException( "advice1 - exception2" ); } // @ExceptionHandler(RuntimeException.class) // public MyExceptionResponse exceptionHandler() { // MyExceptionResponse resp = new MyExceptionResponse(); // resp.setCode(300); // resp.setMsg("exception-Handler"); // return resp; // } } |
注意:
- 同一个异常被局部范围异常处理器和全局范围异常处理器同时覆盖,会选择小范围的局部范围处理器
- 同一个异常被小范围的异常类和大范围的异常处理器同时覆盖,会选择小范围的异常处理器
以上就是本文的全部内容,希望对大家的学习有所帮助,也希望大家多多支持服务器之家。
原文链接:http://www.cnblogs.com/java-zhao/p/5769018.html