常用Maven收集以及Maven技巧

1.完整的Maven的pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<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>org.me</groupId><artifactId>main</artifactId><version>2.0.0</version><packaging>jar</packaging><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><maven.compiler.source>1.8</maven.compiler.source><maven.compiler.target>1.8</maven.compiler.target></properties><dependencies><dependency><groupId>junit</groupId><artifactId>junit</artifactId><version>4.12</version></dependency><!-- Apache Commons Lang --><dependency><groupId>org.apache.commons</groupId><artifactId>commons-lang3</artifactId><version>3.3.2</version></dependency><!-- Apache Commons Collections --><dependency><groupId>org.apache.commons</groupId><artifactId>commons-collections4</artifactId><version>4.0</version></dependency>       <dependency><groupId>commons-collections</groupId><artifactId>commons-collections</artifactId><version>3.2.2</version></dependency><dependency><groupId>commons-logging</groupId><artifactId>commons-logging</artifactId><version>1.2</version></dependency><dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpclient</artifactId><version>4.5.2</version></dependency><dependency><groupId>org.apache.httpcomponents</groupId><artifactId>httpcore</artifactId><version>4.4.4</version></dependency><dependency><groupId>commons-io</groupId><artifactId>commons-io</artifactId><version>2.4</version></dependency><dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>1.7.18</version></dependency><dependency><groupId>org.codehaus.jackson</groupId><artifactId>jackson-mapper-asl</artifactId><version>1.9.13</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>4.2.5.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-core</artifactId><version>4.2.5.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-beans</artifactId><version>4.2.5.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-aop</artifactId><version>4.2.5.RELEASE</version></dependency><dependency><groupId>org.springframework</groupId><artifactId>spring-web</artifactId><version>4.2.5.RELEASE</version></dependency><dependency><groupId>cglib</groupId><artifactId>cglib-nodep</artifactId><version>3.2.0</version></dependency><dependency><groupId>org.aspectj</groupId><artifactId>aspectjweaver</artifactId><version>1.8.8</version></dependency><dependency><groupId>aopalliance</groupId><artifactId>aopalliance</artifactId><version>1.0</version></dependency>       </dependencies><build><plugins><plugin>  <artifactId>maven-assembly-plugin</artifactId>  <configuration>  <appendAssemblyId>false</appendAssemblyId>  <descriptorRefs>  <descriptorRef>jar-with-dependencies</descriptorRef>  </descriptorRefs>  <archive>  <manifest>  <mainClass>com.me.main.MainJFrame</mainClass>  </manifest>  </archive>  </configuration>  <executions>  <execution>  <id>make-assembly</id>  <phase>package</phase>  <goals>  <goal>assembly</goal>  </goals>  </execution>  </executions>  </plugin></plugins></build>
</project>

注意：

使用maven默认的package命令构建的jar包中只包括了工程自身的class文件，并没有包括依赖的jar包。我们可以通过配置插件来对工程进行打包，pom具体配置如下:

            <plugin>  <artifactId>maven-assembly-plugin</artifactId>  <configuration>  <appendAssemblyId>false</appendAssemblyId>  <descriptorRefs>  <descriptorRef>jar-with-dependencies</descriptorRef>  </descriptorRefs>  <archive>  <manifest>  <mainClass>com.me.main.MainJFrame</mainClass>  </manifest>  </archive>  </configuration>  <executions>  <execution>  <id>make-assembly</id>  <phase>package</phase>  <goals>  <goal>assembly</goal>  </goals>  </execution>  </executions>  </plugin>

参考：使用maven插件对java工程进行打包

2.Maven模块划分

建立一个父模块mavenprojects

<?xml version="1.0" encoding="UTF-8"?>
<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>com.hm</groupId><artifactId>mavenprojects</artifactId><version>1.0-SNAPSHOT</version><packaging>pom</packaging><modules><module>projectclient</module><module>projectserver</module></modules><properties><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding></properties>
</project>

建立2个子项目projectclient和projectserver

projectserver有一个类

public class NewT {public int add(int a, int b) {return a + b;}
}

projectclient需要依赖此项目

<?xml version="1.0" encoding="UTF-8"?>
<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><groupId>com.hm</groupId><artifactId>mavenprojects</artifactId><version>1.0-SNAPSHOT</version></parent><artifactId>projectclient</artifactId><packaging>jar</packaging><properties><maven.compiler.source>1.8</maven.compiler.source><maven.compiler.target>1.8</maven.compiler.target></properties><dependencies>  <dependency>  <groupId>com.hm</groupId>  <artifactId>projectserver</artifactId>  <version>${project.version}</version>  </dependency>  </dependencies>
</project>

projectclient调用

package com.hm.projectclient;import com.hm.projectserver.NewT;public class NewApp {public static void main(String[] args) {NewT t = new NewT();System.out.println(t.add(1, 2));}
}

参考： Maven最佳实践：划分模块