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在springboot錯誤默認是跳轉到請求返回渲染路徑中的error/錯誤頁面中。

源碼分析：DefaultErrorViewResolver.java

									private ModelAndView resolve(String viewName, Map<String, Object> model) {

									String errorViewName = "error/" + viewName;

									TemplateAvailabilityProvider provider = this.templateAvailabilityProviders

									 .getProvider(errorViewName, this.applicationContext);

									if (provider != null) {

									 return new ModelAndView(errorViewName, model);

									}

									return resolveResource(errorViewName, model);

									}

比如在application.properites中配置渲染頁面為

1 2	`#配置freemaker` `spring.freemarker.template-loader-path=/WEB-INF/`

如果不配置spring.freemarker.template-loader-path,springboot會在src/main/resources中的templates中的error文件下下找錯誤渲染的頁面。

那么當出現錯誤時，系統會跳轉到/WEB-INF/error/錯誤頁面中。

Spring Boot中使用AOP統一處理web層異常的方法

使用AOP進行web層異常處理

									package com.niugang.aop;

									import java.io.IOException;

									import javax.servlet.ServletException;

									import javax.servlet.http.HttpServletRequest;

									import org.aspectj.lang.annotation.AfterThrowing;

									import org.aspectj.lang.annotation.Aspect;

									import org.slf4j.Logger;

									import org.slf4j.LoggerFactory;

									import org.springframework.stereotype.Component;

									import org.springframework.web.context.request.RequestAttributes;

									import org.springframework.web.context.request.RequestContextHolder;

									import org.springframework.web.context.request.ServletRequestAttributes;

									import org.springframework.web.servlet.ModelAndView;

									/**

									 * controller層統一異常處理

									 * 

									 * @author niugang

									 *

									 */

									@Aspect

									@Component

									public class ExceptionControllerAscept {

									 private Logger logger = LoggerFactory.getLogger(ExceptionControllerAscept.class);

									 /**

									 * 匿名切點的方式

									 * 

									 * @param ex

									 * @throws ServletException

									 * @throws IOException

									 */

									 @AfterThrowing(value = "execution(public * com.niugang.controller..*.*(..))", throwing = "ex")

									    public ModelAndView aroundAdvice(Exception ex) throws ServletException, IOException {

									 ModelAndView modelAndView = new ModelAndView();

									 RequestAttributes requestAttributes = RequestContextHolder.getRequestAttributes();

									 ServletRequestAttributes r = (ServletRequestAttributes) requestAttributes;

									 HttpServletRequest request = r.getRequest();

									 modelAndView.setViewName("500");

									 // 第一如果是 RuntimeException

									 if (ex instanceof RuntimeException) {

									  logger.error("拋出運行時異常{}", ex.getMessage());

									  modelAndView.addObject("exception", ex.getMessage());

									  // 跳轉到錯誤頁面

									  modelAndView.addObject("url", request.getRequestURL());

									  return modelAndView;

									 }

									 modelAndView.addObject("exception","未知異常");

									 return modelAndView;

									 }

									}