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史上最简单的servlet项目实例

2016-05-14 23:17 357 查看
在网上找了很久的java+jsp项目实例,介绍的都大同小异,然而没有一个自己真正运行成功的项目。几经周折,终于整理出了自己认为最简单的一个servlet实例。

首先新建一个web项目,这个网上有很多教程,我就不在这里啰嗦了,直接上代码。

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index.jsp页面代码:

<html>

<head>

<%@ page contentType="text/html;charset=UTF-8"%>

<title>QIMITY</title>

</head>

<body>

<form action="${pageContext.request.contextPath}/login">

<input type="text" name="user"/>

<input type="text" name="password"/>

<input type="submit" value="登录"/>

</form>

</body>

</html>

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Login.java类代码:

package com;

import java.io.IOException;

import javax.servlet.ServletException;

import javax.servlet.http.HttpServlet;

import javax.servlet.http.HttpServletRequest;

import javax.servlet.http.HttpServletResponse;

public class Login extends HttpServlet{

private static final long serialVersionUID = 356393290108927194L;

public void doGet(HttpServletRequest request, HttpServletResponse response)

throws ServletException, IOException {

System.out.println("OK!");

}

}

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web.xml配置文件信息:

<?xml version="1.0" encoding="UTF-8"?>

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0">

<servlet>

<servlet-name>entry</servlet-name>

<servlet-class>com.Login</servlet-class>

</servlet>

<servlet-mapping>

<servlet-name>entry</servlet-name>

<url-pattern>/login</url-pattern>

</servlet-mapping>

<welcome-file-list>

<welcome-file>index.jsp</welcome-file>

</welcome-file-list>

</web-app>

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三个文件都创建好了之后运行tomcat,在登录页面点击登录按钮,如果在eclipse的后台输出了"OK!"则说明项目运行成功!
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