Maven中使用本地JAR包

在Maven项目中使用本地JAR包有两种方法:

1. 使用system scope

  <dependencies>
    <dependency>
      <groupId>org.richard</groupId>
      <artifactId>my-jar</artifactId>
      <version>1.0</version>
      <scope>system</scope>
      <systemPath>${project.basedir}/lib/my-jar.jar</systemPath>
    </dependency>
  </dependencies>

system scope引入的包,在使用jar-with-dependencies打包时将不会被包含,可以使用resources将本地包打进jar-with-dependencies

<build>
    <plugins>
      <plugin>
        <groupId>org.apache.maven.plugins</groupId>
        <artifactId>maven-shade-plugin</artifactId>
        <executions>
          <execution>
            <id>make-assembly</id>
            <phase>package</phase>
            <goals>
              <goal>shade</goal>
            </goals>
            <configuration>
              <descriptorRefs>
                <descriptorRef>jar-with-dependencies</descriptorRef>
              </descriptorRefs>
              <finalName>xxx-jar-with-dependencies</finalName>
            </configuration>
          </execution>
        </executions>
      </plugin>
    </plugins>
     <resources>
      <resource>
        <targetPath>lib/</targetPath>
        <directory>lib/</directory>
        <includes>
          <include>**/my-jar.jar</include>
        </includes>
      </resource>
    </resources>
  </build>

生成的xxx-jar-with-dependencies.jar中,将会包含lib目录以及my-jar.jar,并且能够被在执行的时候被找到。

有的时候这种方法会实效,比如JDBCDriver在声明的时候Class.forName("xxx.Driver")就会说找不到类,用下面两种方法就可以。

2. 将jar包安装到本地repository中

mvn install:install-file -Dfile=my-jar.jar -DgroupId=org.richard -DartifactId=my-jar -Dversion=1.0 -Dpackaging=jar

 3. 添加 in project repository,在新机器上执行时就不用运行mvn install:install-file命令了

<repository>
    <id>in-project</id>
    <name>In Project Repo</name>
    <url>file://${project.basedir}/lib</url>
</repository>

<dependency>
    <groupId>org.richard</groupId>
    <artifactId>my-jar</artifactId>
    <version>1.0</version>
</dependency>

你的jar包及路径必须严格遵循格式:

/groupId/artifactId/version/artifactId-verion.jar

本例中: lib/org/richard/my-jar/1.0/my-jar-1.0.jar

posted @ 2013-01-27 11:13  RichardJing  阅读(51150)  评论(0编辑  收藏