运行index.jsp时无法显示表 | jsp时无法显示表

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问题描述

在我的Web应用程序中，欢迎页面需要显示一个表格.但是，它( http://localhost:8080/MyApp )显示为"null"，但是如果我添加'ServlentToRead .java'的意思是， http://localhost:8080/MyApp/ServlentToRead 它显示了表格.

In my web app the welcome page needs to show a table. However it (http://localhost:8080/MyApp ) shows "null" , but if I add 'ServlentToRead.java' I mean, http://localhost:8080/MyApp/ServlentToRead it displays the table.

为什么我不能将表格作为首页?这是index.jsp

Why I can't get the table as first page ? here is the index.jsp

<%@ page language="java" contentType="text/html; charset=ISO-8859-1"
    pageEncoding="ISO-8859-1"%>

<%
    String table=(String) request.getAttribute("table");

%>
<!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=ISO-8859-1">

<title>Mytable</title>

</head>

<body>

<h1>Mytable</h1>

<%= table %>

</body>
</html>

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns="http://xmlns.jcp.org/xml/ns/javaee"
    xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
    version="3.1">
    <display-name>MyApp</display-name>
    <welcome-file-list>
        <welcome-file>index.html</welcome-file>
        <welcome-file>index.htm</welcome-file>
        <welcome-file>index.jsp</welcome-file>
        <welcome-file>default.html</welcome-file>
        <welcome-file>default.htm</welcome-file>
        <welcome-file>default.jsp</welcome-file>
    </welcome-file-list>
</web-app>

推荐答案

将您的web.xml更改为此:

change your web.xml to this:

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1">
<display-name>MyApp</display-name>
  <welcome-file-list>
    <welcome-file>ServlentToRead</welcome-file>
  </welcome-file-list>
</web-app>

现在，每当您访问url时，您都会看到该表:

You will now see the table whenever you visit the url:

http://localhost:8080/MyApp

编辑:抱歉，请从您的web.xml中删除正斜杠:

sorry, remove the forward slash from in your web.xml:

<welcome-file>/ServlentToRead</welcome-file>

所以看起来像这样:

<welcome-file>ServlentToRead</welcome-file>

这篇关于运行index.jsp时无法显示表的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！