用Maven创建第一个web项目

古城微笑少年丶 2022-08-01 00:10 244阅读 0赞

# [Maven3路程（三）用Maven创建第一个web项目(1)][Maven3_Maven_web_1] #

**一.创建项目**

1.Eclipse中用Maven创建项目

![10160012-b3c84b8bae3d4125b331e27636e90057.png][]

上图中Next

2.继续Next

![10160259-a25b3b7f1e804402bc52f768b7054bb9.png][]

3.选maven-archetype-webapp后，next

![10160452-e2627b10020848e3b385b9e012fdf432.png][]

4.填写相应的信息，Packaged是默认创建一个包，不写也可以

![10161453-fbbcc496b89e4885aae5a3817742a07e.png][]

5.创建好项目后，目录如下：

![10162503-5c30f5375dc2410d8ff3ac049cc1c145.png][]

至此，项目已经创建完毕，下边可是配置。

**二.项目配置**

1.添加**Source Folder**

Maven规定，必须创建以下几个Source Folder

src/main/resources

src/main/java

src/test/resources

src/test/java

添加以上的Source Folder

![10164131-d6487e13a6f049518e0ead37d9cf3a4b.png][]

![10164259-9e2ac0978eda4b06b5758666b4c322f0.png][]

创建好后的目录如下：

![10163838-0146632c1a5a40218959849af2abd575.png][]

2.配置**Build Path**

![10164458-e97d972bce1c4798ac4a51d28cd57fab.png][]

3.设定4个文件夹的输出Output folder，双击修改

![10164910-d9b3a1caad5248758ccb3407e55aff83.png][]

分别修改输出路径为

src/main/resources　　对应　　target/classes

src/main/java　　对应　　target/classes

src/test/resources　　对应　　target/test-classes

src/test/java　　对应　　target/test-classes

4.修改后如下图

![10165443-a52ab62db62046838012e68b8af9363e.png][]

5.设定Libraries

![10165736-5fdcac5eb76346f8b53bb972aa279773.png][]

![10165628-12ed162df58f4b438afbde3d2d6b4ca8.png][]

6.配置完Build Path后目录如下：

![10165905-1c75116b05a1460f846096a624614610.png][]

7.将项目转换成Dynamic Web Project

在项目上右键Properties

在左侧选择 Project Facets,单击右侧的 ”Convert faceted from “

![15151904-2772ef3fd9ae46aa87492d43018ac35d.png][]

8.修改Java为你当前项目的JDK，并添加Dynamic Web Module ，最后单击”Further Configuration available“ 链接：

![15152147-6586dbc7ae9f425c93a6a266bfe132ea.png][]

9.修改Content directory 为 src/main/webapp ,单击OK:

![15152349-616b3a06e39844fdb44ff923eabbede7.png][]

10.设置完Content directory，ok后再次点击前一界面ok，完成转换成Dynamic Web Project项目

![15152550-44d0044f9ce34f1083f33c7f994cdd7b.png][]

11.设置部署程序集(Web Deployment Assembly)

在项目上右键单击，选择Properties，在左侧选择Deployment Assembly

![15153759-a38429073a1448d39284da65238e0a32.png][]

12.设置部署时的文件发布路径

1，我们删除test的两项，因为test是测试使用，并不需要部署。  
　　2，设置将Maven的jar包发布到lib下。   
　　　　Add -> Java Build Path Entries -> Maven Dependencies -> Finish

设置完成后如图

![15154111-ddf9bf23bbe74b98af595567773ad142.png][]

ok后，web项目就创建完毕了，目录机构如图

![15154559-13a29cbeb6a0411289044e901197f6b9.png][]

运行后访问工程成功！

![16145417-4eb71bda9e1a4f0799a5429a66e18a77.png][]

下一章将测试一个servlet

# M[aven3路程（三）用Maven创建第一个web项目(2)servlet演示][aven3_Maven_web_2_servlet] #

上一章用Maven新建了web项目成功后，本文演示在此基础上应用servlet。

***1.首先修改pom.xml文件，添加servlet依赖***

![复制代码][copycode.gif]

<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.lei.demo</groupId>
      <artifactId>maven-web-demo</artifactId>
      <packaging>war</packaging>
      <version>0.0.1-SNAPSHOT</version>
      <name>maven-web-demo Maven Webapp</name>
      <url>http://maven.apache.org</url>
      <dependencies>
          
        <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>3.8.1</version>
          <scope>test</scope>
        </dependency>
          
        <dependency>    
            <groupId>javax.servlet</groupId>    
            <artifactId>servlet-api</artifactId>    
            <version>2.5</version>    
            <scope>provided</scope>    
        </dependency>
      </dependencies>
      <build>
        <finalName>maven-web-demo</finalName>
      </build>
    </project>

![复制代码][copycode.gif]

修改完保存后，项目会从Maven仓库中自动添加servlet-api-2.5.jar包的引用，如果仓库中没有，会自动下载。

引用后见图。

![16151754-bfd38cfc3e4f49e9b1cebb41cf75c554.png][]

***2.新建一个Servlet***

在src/main/java下创建一个Servlet，ServletDemo

![复制代码][copycode.gif]

package com.sulei.demo;
    
    import java.io.IOException;
    import javax.servlet.ServletException;
    import javax.servlet.http.HttpServlet;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    
    /**
     * Servlet implementation class ServletDemo
     */
    public class ServletDemo extends HttpServlet {
        private static final long serialVersionUID = 1L;
           
        public ServletDemo() {
            super();
        }
    
        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);
            }
        }
    
    }

![复制代码][copycode.gif]

***3.修改Web.xml***

![复制代码][copycode.gif]

<?xml version="1.0" encoding="UTF-8"?>
    <web-app xmlns:javaee="http://java.sun.com/xml/ns/javaee" xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">
      <javaee:display-name>Archetype Created Web Application</javaee:display-name>
      <servlet>
        <javaee:description></javaee:description>
        <javaee:display-name>ServletDemo</javaee:display-name>
        <servlet-name>ServletDemo</servlet-name>
        <servlet-class>com.sulei.demo.ServletDemo</servlet-class>
      </servlet>
      <servlet-mapping>
        <servlet-name>ServletDemo</servlet-name>
        <url-pattern>/demo</url-pattern>
      </servlet-mapping>
    </web-app>

![复制代码][copycode.gif]

***4.创建index.jsp***

![复制代码][copycode.gif]

<%@ 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>Insert title here</title>
    </head>
    <body>
        <p>用Maven创建web项目，测试Servlet</p>
        <a href="demo?action=login_input">登录(demo?action=login_input)</a>
    </body>
    </html>

![复制代码][copycode.gif]

***5.创建login.jsp***

![复制代码][copycode.gif]

<%@ 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>Insert title here</title>
    </head>
    <body>
        <form action="demo?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>

![复制代码][copycode.gif]

OK，可以测试一下

![16164530-a23872448b8a40a891e55f8c35a35c7c.png][]

![16164645-3bb559cdc26449b996321024e65410dd.png][]

![16164727-5aafd48cc26343e2a4c173c1e4ce4f2f.png][]

# [Maven3路程（四）用Maven创建Struts2项目][Maven3_Maven_Struts2] #

采用struts版本：struts-2.3.8

# 一.创建一个web项目 #

参考前面文章，项目名：maven-struts-demo。

# 二.配置pom.xml文件添加struts2依赖 #

![复制代码][copycode.gif]

<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.lei.demo</groupId>
      <artifactId>maven-struts-demo</artifactId>
      <packaging>war</packaging>
      <version>0.0.1-SNAPSHOT</version>
      <name>maven-struts-demo Maven Webapp</name>
      <url>http://maven.apache.org</url>
      <dependencies>
        <dependency>
          <groupId>junit</groupId>
          <artifactId>junit</artifactId>
          <version>3.8.1</version>
          <scope>test</scope>
        </dependency>
        <dependency>
            <groupId>org.apache.struts</groupId>
            <artifactId>struts2-core</artifactId>
            <version>2.3.8</version>
    </dependency>
      </dependencies>
      <build>
        <finalName>maven-struts-demo</finalName>
      </build>
    </project>

![复制代码][copycode.gif]

保存后maven会自动下载相应的jar包。

下载完成后查看jar包，如图

![17163559-7861b03cf76f4b4486bebb011c8bfcbd.png][]

# **三.新建JSP页面** #

1.index.jsp页面，点“去登录界面”后，去struts.xml中找对应的anction中name=user\_login\_go的路径

![复制代码][copycode.gif]

2.login.jsp页面，输入name和password后，去struts.xml中找对应的anction中name=login\_go的路径

![复制代码][copycode.gif]

<%@ page 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>struts2-Demo-登录界面</title>
    </head>
    <body>
        <p>struts2-Demo-登录界面</p>
        <form action="login_go" method="post">
            name:<input type="text" name="name" />
            password<input type="password" name="password" />
            <input type="submit" value="登录" />
        </form>
    </body>
    </html>

![复制代码][copycode.gif]

3.welcome.jsp页面，输入name和password后，去struts.xml中找对应的anction中name=login\_go的路径

![复制代码][copycode.gif]

<%@ page contentType="text/html; charset=UTF-8" pageEncoding="UTF-8"%>
    <%@ taglib prefix="s" uri="/struts-tags" %>
    <!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>Struts2-Demo-欢迎页面</title>
    </head>
    <body>
        Welcome:
        <br>
        <h1>name=<s:property value="name" /></h1>
        <h1>password=<s:property value="password" /></h1>    
        <h1>重新登录</h1>
        <s:form action="login_go" namespace="/" method="post">
            <s:textfield name="name" label="name"></s:textfield>  
            <s:password name="password" label="password"></s:password>  
                  
            <s:submit value="Login"></s:submit>
        </s:form>
    </body>
    </html>

![复制代码][copycode.gif]

4.web.xml

![复制代码][copycode.gif]

<!DOCTYPE web-app PUBLIC
     "-//Sun Microsystems, Inc.//DTD Web Application 2.3//EN"
     "http://java.sun.com/dtd/web-app_2_3.dtd" >
    <web-app>
        <display-name>Struts2 Web Application</display-name>
        <filter>
            <filter-name>struts2</filter-name>
            <filter-class>
                org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter
            </filter-class>
        </filter>
        <filter-mapping>
            <filter-name>struts2</filter-name>
            <url-pattern>/*</url-pattern>
        </filter-mapping>
    </web-app>

![复制代码][copycode.gif]

5.struts.xml，放在src/main/resources目录下

![复制代码][copycode.gif]

<?xml version="1.0" encoding="UTF-8"?>
    <!DOCTYPE struts PUBLIC  
        "-//Apache Software Foundation//DTD Struts Configuration 2.0//EN"  
        "http://struts.apache.org/dtds/struts-2.0.dtd">  
    <struts>
        <package name="user" namespace="/"  extends="struts-default">
            <action name="user_login_go" class="com.sulei.action.UserLoginAction" method="user_login">
                <result name="success">/login.jsp</result>
            </action>
            <action name="login_go" class="com.sulei.action.UserLoginAction" method="login">
                <result name="success">/welcome.jsp</result>
            </action>
        </package>
    </struts>

![复制代码][copycode.gif]

目录结构：

![18150805-5a4b0d86ac62491099b65004eaea1685.png][]

运行效果如下

![18145920-f94b128e77184c0a9ee144246ff87b7b.png][]

![18145928-297fd7135e9e4b929676e159d0af267d.png][]

![18145938-9439884d37b6445c97e2e7f7f27328ba.png][]

引用地址：

[http://www.cnblogs.com/leiOOlei/p/3374463.html][Maven3_Maven_Struts2]

[Maven3_Maven_web_1]: http://www.cnblogs.com/leiOOlei/p/3361633.html
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[15154559-13a29cbeb6a0411289044e901197f6b9.png]: /images/20220801/d964a41819164ad5ae37c4d882945a25.png
[16145417-4eb71bda9e1a4f0799a5429a66e18a77.png]: /images/20220801/b1afad9eec7a431da015a22254d85153.png
[aven3_Maven_web_2_servlet]: http://www.cnblogs.com/leiOOlei/p/3372521.html
[copycode.gif]: /images/20220801/dfd0b948bc3d45a09d5a9628eed09a14.png
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[Maven3_Maven_Struts2]: http://www.cnblogs.com/leiOOlei/p/3374463.html
[17163559-7861b03cf76f4b4486bebb011c8bfcbd.png]: /images/20220801/945bfe86152a48e2ba809790637df88f.png
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