Maven 初体验
maven 是什么？
maven 是一个项目构建工具，通过一个pom.xml 文件管理我们java工程所依赖的类，而不需要我们自己手动添加依赖简化了我们对依赖jar 包的导入；
maven 安装:
下载地址：http://maven.apache.org/download.cgi
相关站点：http://mvnrepository.com/
解压到目录：E:\work-space\eclipse3.7\lsjiankong\maven3.3\ 下
配置eclipse: (eclipse 需要有maven 插件)
Window -> preferences -> Maven -> Installations - Add
配置环境变量 M2_HOME：
测试安装是否成功：执行 mvn -version 命令
配置maven3.3\apache-maven-3.3.3\conf\settings.xml
<!-- localRepository
| The path to the local repository maven will use to store artifacts.
|
| Default: ${user.home}/.m2/repository
<localRepository>/path/to/local/repo</localRepository>
-->
<!-- 这个路径是配置存储jar资源的目录-->
<localRepository>E:\work-space\eclipse3.7\local_mavenResource</localRepository>
<!-- 这个路径是配置如果本地jar资源目录没有要使用的jar包就会去中心资源库下载，为了减少占用公共资源， 公司一般都会建立一个本地中心资源库，这里配置的路径就是公司的中心资源库--> <mirror> <id>nexus</id> <mirrorOf>*</mirrorOf> <name>LSPT Mirror</name> <url>http://host:8081/nexus/content/groups/public</url> </mirror>
<!-- 连接中心资源库认证所需要的用户名和密码--> <server> <id>nexus-releases</id> <username>username</username> <password>password</password> </server> <server> <id>nexus-snapshots</id> <username>username</username> <password>password</password> </server>
4.maven 工程中pom.xml 文件：
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<artifactId>flume-parent</artifactId>
<groupId>org.apache.flume</groupId>
<version>1.6.0</version>
</parent>
<groupId>org.apache.flume</groupId>
<artifactId>flume-ng-core</artifactId>
<name>Flume NG Core</name>
<build>
<pluginManagement>
<plugins>
<plugin>
<groupId>org.eclipse.m2e</groupId>
<artifactId>lifecycle-mapping</artifactId>
<version>1.0.0</version>
<configuration>
<lifecycleMappingMetadata>
<pluginExecutions>
<pluginExecution>
<pluginExecutionFilter>
<groupId>org.apache.avro</groupId>
<artifactId>avro-maven-plugin</artifactId>
<versionRange>[${avro.version},)</versionRange>
<goals>
<goal>idl-protocol</goal>
<goal>schema</goal>
</goals>
</pluginExecutionFilter>
<action>
<execute />
</action>
</pluginExecution>
<pluginExecution>
<pluginExecutionFilter>
<groupId>com.thoughtworks.paranamer</groupId>
<artifactId>paranamer-maven-plugin</artifactId>
<versionRange>[2.3,)</versionRange>
<goals>
<goal>generate</goal>
</goals>
</pluginExecutionFilter>
<action>
<ignore />
</action>
</pluginExecution>
<pluginExecution>
<pluginExecutionFilter>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<versionRange>[1.7,)</versionRange>
<goals>
<goal>run</goal>
</goals>
</pluginExecutionFilter>
<action>
<ignore />
</action>
</pluginExecution>
</pluginExecutions>
</lifecycleMappingMetadata>
</configuration>
</plugin>
</plugins>
</pluginManagement>
<plugins>
<plugin>
<groupId>org.apache.avro</groupId>
<artifactId>avro-maven-plugin</artifactId>
<executions>
<execution>
<phase>generate-sources</phase>
<goals>
<goal>schema</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>com.thoughtworks.paranamer</groupId>
<artifactId>paranamer-maven-plugin</artifactId>
<executions>
<execution>
<id>run</id>
<configuration>
<sourceDirectory>${project.build.directory}/generated-sources/avro</sourceDirectory>
<outputDirectory>${project.build.directory}/classes</outputDirectory>
</configuration>
<goals>
<goal>generate</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.rat</groupId>
<artifactId>apache-rat-plugin</artifactId>
</plugin>
</plugins>
</build>
<profiles>
<profile>
<id>not-windows</id>
<activation>
<os>
<family>!Windows</family>
</os>
</activation>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<version>1.7</version>
<executions>
<execution>
<id>generate-version</id>
<phase>generate-sources</phase>
<configuration>
<target>
<mkdir dir="${project.build.directory}/generated-sources/java"/>
<exec executable="sh">
<arg
line = "${basedir}/scripts/saveVersion.sh ${project.version} ${project.build.directory}" />
</exec>
</target>
</configuration>
<goals>
<goal>run</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>1.7</version>
<executions>
<execution>
<id>add-source</id>
<phase>generate-sources</phase>
<goals>
<goal>add-source</goal>
</goals>
<configuration>
<sources>
<source>target/generated-sources/java</source>
</sources>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
<profile>
<id>windows</id>
<activation>
<os>
<family>Windows</family>
</os>
</activation>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-antrun-plugin</artifactId>
<version>1.7</version>
<executions>
<execution>
<id>generate-version</id>
<phase>generate-sources</phase>
<configuration>
<target>
<mkdir dir="${project.build.directory}/generated-sources/java/org/apache/flume"/>
<exec executable="powershell">
<arg
line = "-executionpolicy unrestricted -file ${basedir}\scripts\saveVersion.ps1 ${project.version} ${project.build.directory}" />
</exec>
</target>
</configuration>
<goals>
<goal>run</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>build-helper-maven-plugin</artifactId>
<version>1.7</version>
<executions>
<execution>
<id>add-source</id>
<phase>generate-sources</phase>
<goals>
<goal>add-source</goal>
</goals>
<configuration>
<sources>
<source>target/generated-sources/java</source>
</sources>
</configuration>
</execution>
</executions>
</plugin>
</plugins>
</build>
</profile>
</profiles>
<dependencies>
<dependency>
<groupId>org.apache.flume</groupId>
<artifactId>flume-ng-sdk</artifactId>
</dependency>
</dependencies>
</project>