继承HandlerExceptionResolver自定义异常处理器
控制器ExceptionController.java
package com.orange.controller; import org.springframework.stereotype.Controller; import org.springframework.web.bind.annotation.RequestMapping; import org.springframework.web.servlet.ModelAndView; import com.orange.exception.NameException; import com.orange.exception.PasswordException; @Controller @RequestMapping("/exception") public class ExceptionController { @RequestMapping("handlerException") public ModelAndView doException2(String name, String password, ModelAndView mav) throws Exception{ if(! "admin".equals(name)){ throw new NameException("用户名错误"); } if(! "admin".equals(password)){ throw new PasswordException("密码错误"); } mav.addObject("name", name); mav.addObject("password", password); mav.setViewName("/showException.jsp"); return mav; } }
定义两个异常类型,NameException.Java和PasswordException.java
package com.orange.exception; public class NameException extends Exception { public NameException() { super(); } public NameException(String message) { super(message); } }
package com.orange.exception; public class PasswordException extends Exception { public PasswordException() { super(); } public PasswordException(String message) { super(message); } }
自定义异常处理器MyException,当发生异常时,指定跳转的视图jsp
package com.orange.exception; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import org.springframework.web.servlet.HandlerExceptionResolver; import org.springframework.web.servlet.ModelAndView; import com.fasterxml.jackson.core.sym.Name; public class MyExceptionResolver implements HandlerExceptionResolver { @Override public ModelAndView resolveException(HttpServletRequest request, HttpServletResponse response, Object handler, Exception ex) { ModelAndView mav = new ModelAndView(); mav.addObject("ex", ex); mav.setViewName("/defaultException.jsp"); if(ex instanceof NameException){ mav.setViewName("/showException.jsp"); } if(ex instanceof PasswordException){ mav.setViewName("/showException.jsp"); } return mav; } }
注册异常处理器
<!-- 注册异常处理器 --> <bean class="com.orange.exception.MyExceptionResolver">
当发生异常时,跳转的jsp页面
exception.jsp
<%@ page language="java" contentType="text/html; charset=GBK" pageEncoding="GBK"%> <%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %> <%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=GBK"> <base href="<%=basePath %>"> <title>Default Page</title> </head> <body> <dir> <h3>SimpleMappingExceptionResolver</h3><br> <a href="exception/simple">测试</a> </dir> <hr> <div> <h3>HandlerExceptionResolver</h3><br> <form action="exception/handlerException"> name: <input type="text" name="name"><br> password: <input type="text" name="password"><br> <input type="submit" value="submit"> </form> </div> </body> </html>
showException.jsp
<%@ page language="java" contentType="text/html; charset=GBK" pageEncoding="GBK"%> <%@ taglib prefix="c" uri="http://java.sun.com/jstl/core" %> <%@ taglib prefix="fn" uri="http://java.sun.com/jsp/jstl/functions" %> <% String path = request.getContextPath(); String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/"; %> <!DOCTYPE html PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN" "http://www.w3.org/TR/html4/loose.dtd"> <html> <head> <meta http-equiv="Content-Type" content="text/html; charset=GBK"> <base href="<%=basePath %>"> <title>ShowExceptionPage</title> </head> <body> <div> <c:out value="${ex.message }"></c:out> </div> <div> <c:out value="${name }"></c:out><br> <c:out value="${password }"></c:out> </div> </body> </html>