传统JavaWeb项目改造为Maven项目

一、本地电脑环境安装maven插件，配置环境变量

1、从apache网上下载maven项目的压缩包。下载地址为：http://maven.apache.org/download.html。比如现在最新的Maven版本是3.5.4，那么我下载好的安装文件就是apache-maven-3.5.4.zip。

2、将下载后的压缩包解压到Maven的安装目录，比如说是D:\\develop，那么解压后就是D:\\develop\\apache-maven-3.5.4。

3、添加环境变量MVN_HOME，其值为Maven的家目录，如D:\\develop\\apache-maven-3.5.4。

4、将环境变量MVN_HOME加入到PATH变量中，对于windows系统，可以在PATH变量的值后面加上“;%MVN_HOME%\bin”

经过以上几步之后Maven就安装成功了。接下来我们可以在命令窗口使用mvn --version来验证一下Maven是否安装成功。如能正确输出Maven的安装版本，则表示它安装成功了。

二、Maven配置文件settings.xml相关配置

配置server

<server>
		<id>nexus-release</id>
		<username>admin</username>
		<password>***</password>
	</server>
	<server>
		<id>nexus-snapshot</id>
		<username>admin</username>
		<password>***</password>
	</server>
	<server>
		<id>nexus</id>
		<username>admin</username>
		<password>***</password>
	</server>

配置mirror

<mirror>
		<id>nexus</id>
		<mirrorOf>*</mirrorOf>
		<name>trasenNexus</name>
		<url>http://***/nexus/content/groups/public/</url>
</mirror>

详细配置可参考：Maven配置文件settings.xml详解

三、eclipse配置maven插件

1、windows--preferences--Maven--User Settings

2、设置User Settings文件为本地Maven安装路径下的conf/settings.xml

三、项目转换Maven

1、打开eclipse，在项目上面右键--configure--Convert to Maven Project

2、修改pom.xml文件

1）加properties配置

 <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
   </properties>

2）增加scm配置

 <scm>
        <connection>scm:svn:https://***/svn/Master/Products/WISEHIS/NURSE/trunk/nurse</connection>
        <developerConnection>scm:svn:https://***/svn/Master/Products/WISEHIS/NURSE/trunk/nurse</developerConnection>
        <url>tags/nurse</url>
 </scm>

3）增加dependencies依赖

  <dependencies>
	 <dependency>
	    <groupId>javax.servlet</groupId>
	    <artifactId>javax.servlet-api</artifactId>
	    <version>3.0.1</version>
	    <scope>provided</scope>
	 </dependency>
	 <dependency>
	    <groupId>javax.servlet.jsp</groupId>
	    <artifactId>jsp-api</artifactId>
	    <version>2.2</version>
	    <scope>provided</scope>
	 </dependency>
	 ......
</dependencies>

4）增加distributionManagement配置

<!-- 使用分发管理将本项目打成jar包，直接上传到指定服务器 -->
  <distributionManagement>
    <!--正式版本-->
    <repository>
        <!-- nexus服务器中用户名：在settings.xml中<server>的id-->
        <id>nexus-release</id>
        <!-- 这个名称自己定义 -->
        <name>Nexus Release Repository</name>
        <url>http://***/nexus/content/repositories/releases/</url>
    </repository>
    <!--快照 -->
    <snapshotRepository>
        <id>nexus-snapshot</id>
        <name>Nexus Snapshot Repository</name>
        <url>http://***/nexus/content/repositories/snapshots/</url>
    </snapshotRepository>
  </distributionManagement>

5）增加repositories配置

<!--仓库路径 -->
	<repositories>
	    <repository>
	        <id>nexus</id>
	        <name>Public Repository of trasenNexus</name>
	        <url>http://***/nexus/content/groups/public/</url>
	        <releases>
	            <enabled>true</enabled>
	        </releases>
	        <snapshots>
	            <enabled>true</enabled>
	        </snapshots>
	    </repository>
	</repositories>

6）增加build配置

<build>
    <finalName>${project.artifactId}-${project.version}</finalName>
    <sourceDirectory>src</sourceDirectory>
    <resources>
	      <resource>
		        <directory>src</directory>
		        <includes>
		          <include>**/*.xml</include>
		         </includes>
		         <filtering>true</filtering>
	      </resource>
	      <resource>
				 <directory>resource</directory>
				 <includes>
					<include>**/**</include>
				 </includes>
		   </resource>
    </resources>
    <plugins>
	      <plugin>
		        <artifactId>maven-compiler-plugin</artifactId>
		        <version>3.3</version>
		        <configuration>
		          <source>1.8</source>
		          <target>1.8</target>
		        </configuration>
	      </plugin>
	      <plugin>
	           <groupId>org.apache.maven.plugins</groupId>
	           <artifactId>maven-surefire-plugin</artifactId>
	           <configuration>
	               <skipTests>true</skipTests>
	           </configuration>
	      </plugin>
	      <plugin>
		        <artifactId>maven-war-plugin</artifactId>
		        <version>2.6</version>
		        <configuration>
		          <warSourceDirectory>WebRoot</warSourceDirectory>
		        </configuration>
	      </plugin>
	       <plugin>
			    <groupId>org.apache.maven.plugins</groupId>
			    <artifactId>maven-javadoc-plugin</artifactId>
			    <version>2.8</version>
			    <executions>
			        <execution>
			            <id>attach-javadocs</id>
			            <phase>package</phase>
			            <goals>
			                <goal>jar</goal>
			            </goals>
			            <configuration>
			                <additionalparam>-Xdoclint:none</additionalparam>
			            </configuration>
			        </execution>
			    </executions>
		  </plugin>
	      <plugin>
          	 <groupId>org.apache.tomcat.maven</groupId>
          	 <artifactId>tomcat7-maven-plugin</artifactId>
         	 <version>2.2</version>
         </plugin>
    </plugins>
  </build>

4、设置部署目录

右键--build path--Configuer Build Path

设置Web Deployment  Assembly

点击ADD

将Maven包加入部署目录

四、发布Maven正式版本

1、将未提交SVN的文件全部提交

执行命令：mvn release:prepare

mvn release:perform