maven配置技巧2

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一、排除传递依赖的某个jar，以避免版本冲突。例如: 开发工程中需要引用struts2(2.0.11.2)和freemarker(2.3.16)，但该struts2默认依赖的是freemarker(2.3.8)，可参考以下方式编写:

    <dependency>
    <groupId>org.apache.struts</groupId>
    <artifactId>struts2-core</artifactId>
    <version>2.0.11.2</version>
    <type>jar</type>
    <scope>compile</scope>
    <exclusions>
          <exclusion> <!-- 排除freemarker,以避免版本冲突 -->
    <groupId>freemarker</groupId>
    <artifactId>freemarker</artifactId>
      </exclusion>
    </exclusions>
    </dependency>
    <dependency>
    <groupId>org.freemarker</groupId>
    <artifactId>freemarker</artifactId>
    <version>2.3.16</version>
    <type>jar</type>
    <scope>compile</scope>
    </dependency>


二、发布jar包同时发布源码

  <plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-source-plugin</artifactId>
<version>2.1.2</version>
<configuration>
<attach>true</attach>
</configuration>
<executions>
<execution>
<phase>compile</phase>
<goals>
<goal>jar</goal>
</goals>
</execution>
</executions>
  </plugin>


三、Eclipse开发时，为方便使用内置tomcat调试，需将所依赖的jar包复制到WEB-INF/lib目录下。可通过以下配置:

    <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-dependency-plugin</artifactId>
    <version>2.1</version>
   <executions>
                <execution>
                    <id>copy</id>
                    <phase>package</phase>
                    <goals>
                        <goal>copy-dependencies</goal>
                    </goals>
                    <configuration>
                        <outputDirectory>src/main/webapp/WEB-INF/lib</outputDirectory>
                    </configuration>
                </execution>
             </executions>
    </plugin>

配置完成后。每次有添加jar包依赖时，需运行一次mvn package命令。

四、有时工程中想复用其它工程中的静态内容(image/css/js)，为方便开发调试，需将相应的静态内容，解压缩到当前工程的webapp目录下。可通过以下配置:

    <plugin>
    <groupId>org.apache.maven.plugins</groupId>
    <artifactId>maven-dependency-plugin</artifactId>
    <version>2.1</version>
   <executions>
                <execution>
                    <id>copy-statics</id>
                    <phase>generate-resources</phase>
                    <goals>
                        <goal>unpack</goal>
                    </goals>
                    <configuration>
                    <artifactItems>
                 <artifactItem>
  <groupId>com.yihaodian.front</groupId>
<artifactId>front-global</artifactId>
<version>1.0-SNAPSHOT</version>
<classifier>statics</classifier>
<type>zip</type>
                    <overWrite>true</overWrite>
                    <outputDirectory>src/main/webapp</outputDirectory>
                 </artifactItem>
               </artifactItems>
                    </configuration>
                </execution>
             </executions>
    </plugin>
   
 

配置完成后，需运行一次mvn generate-resources命令。