1、后台处理异常
a、引入thymeleaf依赖
<!-- thymeleaf模板插件 -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
b、在application.properties文件中设置属性
#关闭thymeleaf模板的缓存 spring.thymeleaf.cache=false
c、编写后台处理Handler
import org.springframework.web.bind.annotation.ControllerAdvice; import org.springframework.web.bind.annotation.ExceptionHandler; @ControllerAdvice public class GlobalExceptionHandler {
//设置此handler处理所有异常 @ExceptionHandler(value=Exception.class) public void defaultErrorHandler(){ System.out.println("-------------default error"); } }
d、后台异常打印
-------------default error
2017-06-16 14:54:05.314 WARN 6892 --- [nio-8080-exec-1] .m.m.a.ExceptionHandlerExceptionResolver : Resolved exception caused by Handler execution: org.springframework.dao.IncorrectResultSizeDataAccessException: result returns more than one elements; nested exception is javax.persistence.NonUniqueResultException: result returns more than one elements
2、页面处理异常
a、修改Handler
import org.springframework.web.bind.annotation.ControllerAdvice; import org.springframework.web.bind.annotation.ExceptionHandler; import org.springframework.web.bind.annotation.ResponseBody; @ControllerAdvice public class GlobalExceptionHandler { @ExceptionHandler(value=Exception.class) @ResponseBody public String defaultErrorHandler(){ System.out.println("-------------default error"); return "系统错误，请联系管理员"; } }
b、页面访问结果
3、页面处理异常，使用模板页面
a、编写html模板页面
<!DOCTYPE html> <html xmlns="http://www.w3.org/1999/xhtml" xmlns:th="http://www.thymeleaf.org" xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3"> <head> <meta charset="UTF-8" /> <title>Insert title here</title> </head> <body> <h1 th:inlines="text">异常出现啦</h1> <p th:text="${messages}"></p> </body> </html>
b、修改Handler
@ExceptionHandler(value=Exception.class) public ModelAndView defaultErrorHandler(Exception e){ ModelAndView modal = new ModelAndView(); modal.setViewName("/exception"); modal.addObject("messages", e.getMessage()); return modal; }
c、测试结果
