在上一篇博客里,我们使用Maven构建了一个Web项目,我们在这里写一个简单的Servlet,测试一下。
1.在src/main/java下,新建一个Servlet
- <span style="font-weight: normal;">package com.deppon.text01.action;
- 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 UserServlet extends HttpServlet {
- private static final long serialVersionUID = 1L;
- protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
- doPost(request , response);
- }
- protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
- request.setCharacterEncoding("UTF-8");
- response.setContentType("text/html;charset=utf-8");
- String action = request.getParameter("action");
- if("login_input".equals(action)) {
- request.getRequestDispatcher("login.jsp").forward(request , response);
- } else if("login".equals(action)) {
- String name = request.getParameter("name");
- String password = request.getParameter("password");
- System.out.println("name->" + name + ",password->" + password);
- }
- }
- }</span>
2. 修改web.xml
- <pre name="code" class="html"><span style="font-weight: normal;"><?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">
- <servlet>
- <servlet-name>UserServlet</servlet-name>
- <servlet-class>com.deppon.text01.action.UserServlet</servlet-class>
- </servlet>
- <servlet-mapping>
- <servlet-name>UserServlet</servlet-name>
- <url-pattern>/user</url-pattern>
- </servlet-mapping>
- </web-app></span>
3. 新建JSP
index.jsp
- <span style="font-weight: normal;"><%@ page language="java" contentType="text/html; charset=UTF-8"
- pageEncoding="UTF-8"%>
- <!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">
- <title>Hello Maven</title>
- </head>
- <body>
- <p>大家好!</p>
- <a href="user?action=login_input">去登录</a>
- </body>
- </html></span>
login.jsp
- <%@ page language="java" contentType="text/html; charset=UTF-8"
- pageEncoding="UTF-8"%>
- <!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">
- <title>登录界面</title>
- </head>
- <body>
- <form action="user?action=login" method="post">
- Name:<input type="text" name="name" />
- Password:<input type="password" name="password" />
- <input type="submit" value="登录" />
- </form>
- </body>
- </html>
4. 测试
项目结构如下图所示:
其实,构建完成之后,开发的话,应该和平时开发Web项目是一样的。
2013-04-28 日修改
之前忘记说明pom文件了,需要添加依赖的:
pom.xml
- <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
- xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
- <modelVersion>4.0.0</modelVersion>
- <groupId>com.deppon.demo</groupId>
- <artifactId>test01</artifactId>
- <packaging>war</packaging>
- <version>0.0.1-SNAPSHOT</version>
- <name>test01 Maven Webapp</name>
- <url>http://maven.apache.org</url>
- <!-- 属性配置 -->
- <properties>
- <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
- </properties>
- <!-- 依赖配置 -->
- <dependencies>
- <!-- 添加JUnit -->
- <dependency>
- <groupId>junit</groupId>
- <artifactId>junit</artifactId>
- <version>3.8.1</version>
- <scope>test</scope>
- </dependency>
- <!-- 添加Servlet -->
- <dependency>
- <groupId>javax.servlet</groupId>
- <artifactId>servlet-api</artifactId>
- <version>2.5</version>
- <scope>provided</scope>
- </dependency>
- </dependencies>
- <build>
- <finalName>test01</finalName>