Servlet处理表单提交的数据。
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Servlet处理表单提交的数据
2014-03-28 21:58:55| 分类： Java Web | 标签： |举报 |字号大中小 订阅
index.jsp
<%@ page language=”java” import=”java.util.*” pageEncoding=”UTF-8″%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+”://”+request.getServerName()+”:”+request.getServerPort()+path+”/”;
%>
<!DOCTYPE HTML PUBLIC “-//W3C//DTD HTML 4.01 Transitional//EN”>
<html>
<head>
<base href=”<%=basePath%>”>
<title>Servlet处理表单提交的数据</title>
<meta http-equiv=”pragma” content=”no-cache”>
<meta http-equiv=”cache-control” content=”no-cache”>
<meta http-equiv=”expires” content=”0″>
<meta http-equiv=”keywords” content=”keyword1,keyword2,keyword3″>
<meta http-equiv=”description” content=”This is my page”>
</head>
<body>
<form action=”servlet/HelloServlet” method=”post”>
<p>请输入您的姓名:<input type=”text” name=”name”></p>
<p><input type=”submit” value=”提交”></p>
</form>
</body>
</html>
web.xml
<?xml version=”1.0″ encoding=”UTF-8″?>
<web-app version=”3.0″
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_3_0.xsd”>
<display-name></display-name>
<servlet>
<description>This is the description of my J2EE component</description>
<display-name>This is the display name of my J2EE component</display-name>
<servlet-name>HelloServlet</servlet-name>
<servlet-class>com.test.servlet.HelloServlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>HelloServlet</servlet-name>
<url-pattern>/servlet/HelloServlet</url-pattern>
</servlet-mapping>
<welcome-file-list>
<welcome-file>index.jsp</welcome-file>
</welcome-file-list>
</web-app>
HelloServlet.java
package com.test.servlet;
import java.io.IOException;
import java.io.PrintWriter;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
//通过Servlet处理表单提交的请求
public class HelloServlet extends HttpServlet {
//处理Post请求
public void doPost(HttpServletRequest request, HttpServletResponse response)
throws ServletException, IOException {
request.setCharacterEncoding(“UTF-8″);
response.setContentType(“text/html;charset=UTF-8″);
PrintWriter out = response.getWriter();
String name = request.getParameter(“name”);
if(name != null){
out.write(“Hello”+name+”!”);
}
out.flush();//刷新out
out.close();//关闭out
}
}