Java基础编程2—jsp错误页面-优快云博客

本文链接：https://blog.youkuaiyun.com/SURLIYA/article/details/72471124

本文介绍如何在web.xml中配置统一的错误页面，并展示了一个具体的例子，包括404和500错误的处理方式，同时提供了error.jsp的内容，用于显示友好的错误提示。

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web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app version="2.5" xmlns="http://java.sun.com/xml/ns/javaee"
	xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	xsi:schemaLocation="http://java.sun.com/xml/ns/javaee 
	http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

	<!-- 统一错误页面去处 -->
	<error-page>
		<error-code>404</error-code>
		<location>/error.jsp</location>
	</error-page>
	<error-page>
		<error-code>500</error-code>
		<location>/error.jsp</location>
	</error-page>
</web-app>

error.jsp

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8" isErrorPage="true"%>
<!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=UTF-8">
<link href="images/favicon.ico" type="image/x-icon" rel="shortcut icon" />
<title>ERROR</title>
<style type="text/css">
	img {
		display:block;
		margin:auto;
		vertical-align:middle;
	}
	a {
		display:block;
		margin:auto;
		text-align:center;
		vertical-align:middle;
		margin-top:-90px;
	}
</style>
</head>
<body>
	<div style="margin-top:100px; width: 100%; height: 100%;">
		<img src="images/error.png"/>
		<a href="index.jsp">返回登陆页面吧，ZZ！</a>
	</div>
</body>
</html>

zz.jsp（页面转向）

<%@ page language="java" contentType="text/html; charset=UTF-8"
    pageEncoding="UTF-8" errorPage="error.jsp"%>
<!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=UTF-8">
<link href="images/favicon.ico" type="image/x-icon" rel="shortcut icon" />
<title>TEST ERROR</title>
</head>
<body>
	<jsp:forward page="tozz.jsp"></jsp:forward>
</body>
</html>