自定义web异常页与找不到页(400与500) _Web前端

自定义web错误页与找不到页(400与500)

在web.xml中定义如下XML:

        <error-page>
		<exception-type>java.lang.Throwable</exception-type>
		<location>/WEB-INF/views/error/500.jsp</location>
	</error-page>
	<error-page>
		<error-code>500</error-code>
		<location>/WEB-INF/views/error/500.jsp</location>
	</error-page>
	<error-page>
		<error-code>404</error-code>
		<location>/WEB-INF/views/error/404.jsp</location>
	</error-page>

?在 web项目的/WEB-INF/views/error文件夹下定义404.jsp与500.jsp

404.jsp示例:

<%@ page contentType="text/html;charset=UTF-8"%>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>

<%response.setStatus(200);%>

<!DOCTYPE html>
<html>
<head>
	<title>404 - 页面不存在</title>
</head>

<body>
	<h2>404 - 页面不存在.</h2>
	<p><a href="<c:url value="/"/>">返回首页</a></p>
</body>
</html>

?500.jsp示例:

<%@ page contentType="text/html;charset=UTF-8" isErrorPage="true" %>
<%@ taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core" %>
<%@ page import="org.slf4j.Logger,org.slf4j.LoggerFactory" %>
<%response.setStatus(200);%>

<%
	Throwable ex = null;
	if (exception != null)
		ex = exception;
	if (request.getAttribute("javax.servlet.error.exception") != null)
		ex = (Throwable) request.getAttribute("javax.servlet.error.exception");

	//记录日志
	Logger logger = LoggerFactory.getLogger("500.jsp");
	logger.error(ex.getMessage(), ex);
%>

<!DOCTYPE html>
<html>
<head>
	<title>500 - 系统内部错误</title>
</head>

<body>
	<h2>500 - 系统发生内部错误.</h2>
	<p><a href="<c:url value="/"/>">返回首页</a></p>
</body>
</html>

然后服务器的所有报错都会跳转到500.jsp,所有页面找不到的请求都会转发到404.jsp.

其中500.jsp与404.jsp可根据自己项目灵活定制.

注意不要少了?<%response.setStatus(200);%> 这句话,以设置服务器返回的HTTP状态!