SpringBoot全局统一异常处理(包含404错误处理)

1.ControllerAdvice&&ExceptionHandler处理异常

package com.lius.controllers;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RestController;@RestController@RequestMapping("/exception")public class testExceptionColtroller {	@RequestMapping("/nullException")	public String nullException() {		//触发空指针异常		throw new NullPointerException("空指针异常!");	}}

package com.lius.handler;import java.util.HashMap;import java.util.Map;import org.springframework.web.bind.annotation.ExceptionHandler;import org.springframework.web.bind.annotation.ResponseBody;import org.springframework.web.bind.annotation.RestControllerAdvice;@RestControllerAdvice(basePackages = "com.lius.controllers")public class handlerException {	@ExceptionHandler(NullPointerException.class)	@ResponseBody	private Map
    
      handlerNullPointException(){		Map
     
       map =  new HashMap<>();		map.put("code", 500);		map.put("message", "代码错误,空指针异常!");		return map;	}}

2.ErrorController拦截处理404异常

package com.lius.controllers;import java.util.HashMap;import java.util.Map;import org.springframework.boot.web.servlet.error.ErrorController;import org.springframework.stereotype.Controller;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.ResponseBody;/** * 处理404等error错误
 * @author lius * */@Controllerpublic class errorController implements ErrorController {	@Override	public String getErrorPath() {		// TODO Auto-generated method stub		return "/error";	}		@RequestMapping("/error")	@ResponseBody	public Map
    
      handlerError(){		Map
     
       errMap = new HashMap<>();		errMap.put("code", 404);		errMap.put("message", "404页面未找到!");		return errMap;	}}