maven安装配置

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1、到http://maven.apache.org/download.cgi下载最新版本的maven。

2、解压apache-maven-3.3.9到相应的安装目录（D:\Program Files\apache-maven-3.3.9）。

3、配置环境变量新建环境变量 M2_HOME=D:\Program Files\apache-maven-3.3.9(MAVEN安装目录)。把bin文件夹目录添加到path中。

4、验证是否安装上命令行下输入mvn -v

出现版本信息即为正确安装

在eclipse里配置：windows-preferences-maven-installations 和user setting 中设置maven目录和本地仓库目录

并且在jdk的

Default VM arguments中设置

-Dmaven.multiModuleProjectDirectory=$M2_HOME

要注意jdk和maven的版本是否对应

使用maven-assembly-plugin打包：

1.在pom.xml中加入红色标注部分

<span style="color:#333333;"><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/xsd/maven-4.0.0.xsd"><modelVersion>4.0.0</modelVersion><groupId>neu.bigdate.ali</groupId><artifactId>test2</artifactId><version>0.0.1-SNAPSHOT</version><packaging>jar</packaging><name>test2</name><url>http://maven.apache.org</url><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties><dependencies><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>3.8.1</version><scope>test</scope></dependency><dependency><groupId>com.aliyun.odps</groupId><artifactId>odps-sdk-mapred</artifactId><version>0.19.3-public</version></dependency></dependencies></span><span style="color:#ff0000;"><build><plugins><plugin><artifactId>maven-assembly-plugin</artifactId><version>2.4.1</version><configuration><finalName>mylib</finalName><appendAssemblyId>false</appendAssemblyId><encoding>utf-8</encoding><descriptors><descriptor>src/main/assembly/src.xml</descriptor></descriptors><descriptorRefs><descriptorRef>jar-with-dependencies</descriptorRef></descriptorRefs></configuration><executions><execution><id>make-assembly</id><phase>package</phase><goals><goal>single</goal></goals></execution></executions></plugin></plugins></build></span><span style="color:#333333;"></project></span>

2.在src/main/assembly/路径下创建src.xml(上一步红色部分设置的路径)

src.xml中内容

<?xml version="1.0" encoding="UTF-8"?> <assembly 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/xsd/assembly-1.0.0.xsd">      <id>package</id>      <formats>          <format>war</format>      </formats>      <includeBaseDirectory>false</includeBaseDirectory>      <!-- <fileSets>         <fileSet>             <directory>src/main/bin</directory>             <outputDirectory>/</outputDirectory>         </fileSet>         <fileSet>             <directory>src/main/config</directory>             <outputDirectory>config</outputDirectory>         </fileSet>     </fileSets> -->     <dependencySets>         <dependencySet>             <outputDirectory>lib</outputDirectory>             <scope>runtime</scope>         </dependencySet>     </dependencySets> </assembly>

3.mvn assembly:assembly构建

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