在我的网络应用程序中,欢迎页面需要显示一个表格。然而它( http://localhost:8080/MyApp )显示 "null",但如果我添加 'ServlentToRead.java' 我的意思是, http://localhost:8080/MyApp/ServlentToRead它显示表格。
为什么我无法将表格设为首页?这是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>
编辑:
<?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>
最佳答案
Why I can't get the table as first page ?
将您的 web.xml 更改为:
<?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,每当您访问该网址时,您都会看到该表格:
http://localhost:8080/MyApp
编辑:抱歉,请从 web.xml 中删除正斜杠:
<welcome-file>/ServlentToRead</welcome-file>
所以它看起来像这样:
<welcome-file>ServlentToRead</welcome-file>
关于java - 运行index.jsp时无法显示表格,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/50477922/