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一、安装支持库

yum install -y gcc gcc-c++ autoconf wget

二、安装RAR

1.下载rar源码包

wget http://www.rarlab.com/rar/rarlinux-x64-5.3.0.tar.gz

2.解压安装

tar -zxvf rarlinux-x64-5.3.0.tar.gz
cd rar
make && make install
/bin/cp -f rar_static /usr/local/bin/rar && /bin/cp -f rar_static /usr/local/bin/unrar
cd ..
rm -rf rar

三、简单使用

解压：rar x FileName.rar
压缩：rar a FileName.rar DirName

四、Java调用解压命令源码

/**
 * RAR 5.0以上调用命令解压
 * @author liuyazhuang
 *
 */
public class RarToFile {
   /*
    * cmd 压缩与解压缩命令
    */
    private static String rarCmd = "rar a "; 
    private static String unrarCmd = "rar x ";   

   /**
    * 将1个文件压缩成RAR格式
    * rarName 压缩后的压缩文件名(不包含后缀)
    * fileName 需要压缩的文件名(必须包含路径)
    * destDir 压缩后的压缩文件存放路径
    */
    public static void RARFile(String rarName,String fileName,String destDir) {
       rarCmd += destDir + rarName + ".rar " + fileName;
       try {
           Runtime rt = Runtime.getRuntime();
           Process p = rt.exec(rarCmd);
       }catch(Exception e) {
    	   System.out.println(e.getMessage());      
       }
    }

   /**
    * 将1个RAR文件解压
    * rarFileName 需要解压的RAR文件(必须包含路径信息以及后缀)
    * destDir 解压后的文件放置目录
    */
    public static void unRARFile(String rarFileName,String destDir) {
       unrarCmd += rarFileName + " " + destDir;
       try {
           Runtime rt = Runtime.getRuntime();
           Process p = rt.exec(unrarCmd); 
       } catch (Exception e) {
    	   System.out.println(e.getMessage());   
       }
    }
}

如果上述Java源码在运行的时候出现异常，则可参考如下Java代码调用解压命令解压

public void executeNewFlow() {
    Runtime run = Runtime.getRuntime();
    File wd = new File("/bin");
    System.out.println(wd);
    Process proc = null;
    try {
        proc = run.exec("/bin/bash",null,wd);
    } catch (IOException e) {
        e.printStackTrace();
    }
    if (proc != null) {
        BufferedReader in = new BufferedReader(new InputStreamReader(proc.getInputStream()));
        PrintWriter out = new PrintWriter(new BufferedWriter(new OutputStreamWriter(proc.getOutputStream())),true);
        out.println("cd /home/test");
        out.println("rar x test.rar");
        out.println("exit");//这个命令必须执行，否则in流不结束。
        try {
            String line;
            while ((line = in.readLine()) != null) {
                System.out.println(line);
            }
            proc.waitFor();
            in.close();
            out.close();
            proc.destroy();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}