Java中Maven项目导出jar包配置的示例代码

具体代码如下所示；

<!-- 第一种打包方式 (maven-jar-plugin), 将依赖包和配置文件放到jar包外 -->
<build>
  <sourceDirectory>src/main/java</sourceDirectory>
  <resources>
    <resource>
      <directory>src/main/resources</directory>
      <!-- 将<directory>目录下的文件打包到<targetPath>下 -->
      <targetPath>${project.build.directory}</targetPath>
      <excludes>
        <exclude>**/*.java</exclude>
      </excludes>
    </resource>
  </resources>
  <testSourceDirectory>src/test/java</testSourceDirectory>
  <testResources>
    <testResource>
      <directory>src/test/resources</directory>
      <filtering>true</filtering>
      <excludes>
        <exclude>**/*.java</exclude>
      </excludes>
    </testResource>
  </testResources>
  <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-compiler-plugin</artifactId>
      <version>2.3.2</version>
      <configuration>
        <source>1.8</source>
        <target>1.8</target>
        <encoding>UTF-8</encoding>
      </configuration>
    </plugin>
    <!-- 将项目依赖包复制到<outputDirectory>指定的目录下 -->
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-dependency-plugin</artifactId>
      <executions>
        <execution>
          <id>copy-dependencies</id>
          <phase>package</phase>
          <goals>
            <goal>copy-dependencies</goal>
          </goals>
          <configuration>
            <outputDirectory>
              ${project.build.directory}/lib
            </outputDirectory>
          </configuration>
        </execution>
      </executions>
    </plugin>
    <!-- 将项目依赖包的路径（与上一项中的<outputDirectory>对应）添加到classPath中 -->
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-jar-plugin</artifactId>
      <configuration>
        <archive>
          <manifest>
            <addClasspath>true</addClasspath>
            <classpathPrefix>lib/</classpathPrefix>
            <mainClass>com.ctbri.echoRisk.ApplicationStart</mainClass>
          </manifest>
          <manifestEntries>
            <Class-Path>./</Class-Path>
          </manifestEntries>
        </archive>
      </configuration>
    </plugin>
  </plugins>
</build>

<!-- 第二种打包方式 (maven-shade-plugin), 将依赖包和配置文件放到jar包内 -->
<build>
  <directory>${project.basedir}/target</directory>
  <finalName>${project.artifactId}-${project.version}</finalName>
  <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-surefire-plugin</artifactId>
      <version>2.21.0</version>
      <configuration>
        <skipTests>true</skipTests>
      </configuration>
    </plugin>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-compiler-plugin</artifactId>
      <version>2.3.2</version>
      <configuration>
        <source>1.8</source>
        <target>1.8</target>
        <encoding>UTF-8</encoding>
        <compilerArguments>
          <extdirs>${project.basedir}/lib/</extdirs>
        </compilerArguments>
      </configuration>
    </plugin>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-shade-plugin</artifactId>
      <version>3.1.0</version>
      <executions>
        <execution>
          <phase>package</phase>
          <goals>
            <goal>shade</goal>
          </goals>
          <configuration>
            <minimizeJar>true</minimizeJar>
            <filters>
              <filter>
                <artifact>*:*</artifact>
              </filter>
            </filters>
            <transformers>
              <!-- 往MANIFEST文件中写入Main-Class是可执行包的必要条件。ManifestResourceTransformer可以轻松实现。 -->
              <transformer
                implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
                <mainClass>com.ctbri.echoRisk.ApplicationStart</mainClass>
              </transformer>
              <!-- AppendingTransformer 用来处理多个jar包中存在重名的配置文件的合并，尤其是spring -->
              <transformer
                implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                <resource>META-INF/spring.handlers</resource>
              </transformer>
              <transformer
                implementation="org.apache.maven.plugins.shade.resource.AppendingTransformer">
                <resource>META-INF/spring.schemas</resource>
              </transformer>
            </transformers>
          </configuration>
        </execution>
      </executions>
    </plugin>
  </plugins>
</build>

<!-- 第三种打包方式 (maven-assembly-plugin) -->
<build>
  <plugins>
    <plugin>
      <groupId>org.apache.maven.plugins</groupId>
      <artifactId>maven-surefire-plugin</artifactId>
      <version>2.21.0</version>
      <configuration>
        <skipTests>true</skipTests>
      </configuration>
    </plugin>
    <plugin>
      <artifactId>maven-compiler-plugin</artifactId>
      <version>2.3.2</version>
      <configuration>
        <source>1.8</source>
        <target>1.8</target>
        <encoding>UTF-8</encoding>
        <compilerArguments>
          <extdirs>${project.basedir}/lib/</extdirs>
        </compilerArguments>
      </configuration>
    </plugin>
    <plugin>
      <artifactId>maven-assembly-plugin</artifactId>
      <configuration>
        <descriptorRefs>
          <descriptorRef>jar-with-dependencies</descriptorRef>
        </descriptorRefs>
        <archive>
          <manifest>
            <mainClass>com.ctbri.echoRisk.ApplicationStart</mainClass>
          </manifest>
        </archive>
      </configuration>
      <executions>
        <execution>
          <id>make-assembly</id>
          <phase>package</phase>
          <goals>
            <goal>single</goal>
          </goals>
        </execution>
      </executions>
    </plugin>
  </plugins>
</build>

总结

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