myeclipse中maven3的使用，部署web项目到tomcat7

http://my.oschina.net/810965872/blog/148634

myeclipse中需要集成maven3,具体操作可以参看这篇文章

http://www.cnblogs.com/fancyzero/archive/2012/06/09/maven3.html

这里就不多加描述

在创建web工程前，咱们先创建一个普通的maven工程，后面的web工程将会使用到这个工程的jar包

1.普通maven工程创建过程如下，右键>>new Maven Project>>next

输入对应的groupId,artifactId及包名

生成的文件目录结构如下

修改App.java

package com.johnmy.study;

/**
 *
 * @author JohnmyWork
 * @date 2013-7-30
 */
public class App {
    public static String handleString(String str) {
        return "handled:" + str;
    }
}

保存，执行install

此时会在本地库中安装mvnapp的资源内容，下面的web工程可以直接从maven库中读取到资源

其实，还有一种更高效的方法，可以在dos窗口中使用mvn命令快速创建普通工程，再导入到myeclipse中编辑

-----------------------------------------------------------------------------------------------------------------

现在开始创建web工程

同样new maven project >> next

输入相应信息

生成的目录结构如下

修改目录结构

修改之后如下

向工程中添加资源包

也可以直接修改pom文件,这里引入了之前创建的普通工程

    < 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 >2.4</ version >
        </ dependency >

        < dependency >
            < groupId >com.johnmy.study</ groupId >
            < artifactId >mvnapp</ artifactId >
            < version >1.0-SNAPSHOT</ version >
        </ dependency >

    </ dependencies >

新建Myservlet.java并放到study包中

Myservlet.java

package study;

import java.io.IOException;
import java.io.Writer;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.johnmy.study.App;

/**
 *
 * @author JohnmyWork
 * @date 2013-7-31
 */
public class Myservlet extends HttpServlet {

    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        super .doGet(req, resp);
    }

    @Override
    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
        String input = req.getParameter( "name" );
        Writer out = resp.getWriter();
        out.append(App.handleString(input));
    }

    private static final long serialVersionUID = 1L;

}

修改web.xml,及index.jsp

web.xml

<! 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 >Archetype Created Web Application</ display-name >
    < welcome-file-list >
        < welcome-file >index.jsp</ welcome-file >
    </ welcome-file-list >

    < servlet >
        < servlet-name >Myservlet</ servlet-name >
        < servlet-class >study.Myservlet</ servlet-class >
    </ servlet >
    < servlet-mapping >
        < servlet-name >Myservlet</ servlet-name >
        < url-pattern >/myservlet</ url-pattern >
    </ servlet-mapping >
</ web-app >

index.jsp

<! doctype html>
< html lang = "en" >
< head >
< meta charset = "UTF-8" />
< title >hello maven!</ title >
</ head >
< body >
    < form action = "myservlet" method = "get" >
        name:< input name = "name" > < input type = "submit" >
    </ form >
</ body >
</ html >

差不多了，执行下maven test，maven install看下有木有问题

 BUILD SUCCESS ！！一切正常

下面就把项目部署到tomcat7中

部署之前先修改下tomcat的配置文件

D:\WebContainer\3-tomcat7\apache-tomcat-7.0.39\conf\tomcat-users.xml

<? xml version = '1.0' encoding = 'utf-8' ?>
< tomcat-users >
 < role rolename = "manager-gui" />
 < role rolename = "manager" />
 < role rolename = "manager-script" />
 < user username = "tomcat" password = "tomcat" roles = "manager-gui,manager,manager-script" />
</ tomcat-users >

还有修改下maven3的配置文件

D:\Program Files\MavenServer\maven3\conf\settings.xml

找到servers修改之

< servers >
   < server >
     < id >mytomcat7</ id >
     < username >tomcat</ username >
     < password >tomcat</ password >
   </ server >
 </ servers >

外部配置好了，现在配置下web工程中的pom，添加tomcat7-maven-plugin

    < build >
        < finalName >mvnwebapp</ finalName >
        < plugins >
            < plugin >
                < groupId >org.apache.tomcat.maven</ groupId >
                < artifactId >tomcat7-maven-plugin</ artifactId >
                < version >2.2-SNAPSHOT</ version >
                < configuration >
                    < path >/${project.build.finalName}</ path >
                    < server >mytomcat7</ server >
                    <!-- 这里是本地tomcat，如果是远程服务器可以改成对应的地址，实现自动部署-->
                    < url >http://localhost:8080/manager/text</ url >
                 </ configuration >
            </ plugin >
        </ plugins >
    </ build >

添加插件仓库配置，下面这两个任选其一或者两个都用

< repositories >
    < repository >
        < id >apache.snapshots</ id >
        < url >https://repository.apache.org/content/repositories/snapshots</ url >
        < releases >
            < enabled >false</ enabled >
        </ releases >
        < snapshots >
            < enabled >true</ enabled >
        </ snapshots >
    </ repository >
</ repositories >

< pluginRepositories >
        < pluginRepository >
            < id >apache.snapshots</ id >
            < name >Apache Snapshots</ name >
            < url >https://repository.apache.org/content/repositories/snapshots</ url >
            < releases >
                < enabled >false</ enabled >
            </ releases >
            < snapshots >
                < enabled >true</ enabled >
            </ snapshots >
        </ pluginRepository >
    </ pluginRepositories >

启动tomcat7,执行maven build

配置goals

run

访问http://localhost:8080/mvnwebapp/

提交后

成功！！！！！！

调用了普通工程的jar中的handleString()方法

如果普通工程的jar有更新并重新发布到tomcat中

只需要简单的maven install，maven bulid

修改handleString方法

public static String handleString(String str) {
        return "nice!!! you handled it:" + str+ "\n" + new Date().toString();
    }

在mvnapp中执行maven install

在mvnwebapp中执行maven bulid

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如有错误或问题，请指出，谢谢