本文介绍阿里云Java SDK推荐的Maven安装方式。具体包含2个步骤，首先需要在pom.xml配置文件中添加阿里云Java SDK的Maven仓库，然后再添加媒体处理的依赖。

  1. 添加Maven仓库。
    <repositories>
       <repository>
           <id>sonatype-nexus-staging</id>
           <name>Sonatype Nexus Staging</name>
           <url>https://oss.sonatype.org/service/local/staging/deploy/maven2/</url>
           <releases>
               <enabled>true</enabled>
           </releases>
           <snapshots>
               <enabled>true</enabled>
           </snapshots>
       </repository>
   </repositories>
  2. 添加依赖。

    阿里云Java SDK核心库以及媒体处理Java SDK的详细版本：

    以4.5.3版本SDK的核心库和2.7.6版本的媒体处理SDK为例：
    <dependency>
         <groupId>com.aliyun</groupId>
         <artifactId>aliyun-java-sdk-core</artifactId>
         <version>4.5.3</version>
   </dependency>
   <dependency>
         <groupId>com.aliyun</groupId>
         <artifactId>aliyun-java-sdk-mts</artifactId>
         <version>2.7.6</version>
   </dependency>
    另外有一个可选的JSON库依赖。在媒体处理的API中，很多参数都是JSON，java的JSON库有很多，可以选择熟悉的库，本文以1.2.68.noneautotype版本为例：
    <dependency>
       <groupId>com.alibaba</groupId>
       <artifactId>fastjson</artifactId>
       <version>1.2.68.noneautotype</version>
   </dependency>
pom.xml完整示例：
<?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>mps-demo-project</groupId>
  <artifactId>mps-demo-project</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <repositories>
      <repository>
          <id>sonatype-nexus-staging</id>
          <name>Sonatype Nexus Staging</name>
          <url>https://oss.sonatype.org/service/local/staging/deploy/maven2/</url>
          <releases>
              <enabled>true</enabled>
          </releases>
          <snapshots>
              <enabled>true</enabled>
          </snapshots>
      </repository>
  </repositories>
  <dependencies>
      <dependency>
          <groupId>com.aliyun</groupId>
          <artifactId>aliyun-java-sdk-core</artifactId>
          <version>4.5.3</version>
      </dependency>
      <dependency>
          <groupId>com.aliyun</groupId>
          <artifactId>aliyun-java-sdk-mts</artifactId>
          <version>2.7.6</version>
      </dependency>
      <dependency>
          <groupId>com.alibaba</groupId>
          <artifactId>fastjson</artifactId>
          <version>1.2.46</version>
      </dependency>
  </dependencies>
  <build>
      <finalName>${artifactId}-${version}</finalName>
      <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>
              </configuration>
          </plugin>
      </plugins>
  </build>
  </project>