String compress ="D:/doc_c06_net.rar";//rar压缩文件

String decompression="D:/doc_redcome_com/";//解压路径

Process p = rt.exec("UNRAR.EXE x -o+ -p- " + compress + " " +decompression);

StringBuffer sb = new StringBuffer();

java.io.InputStream fis = p.getInputStream();

int value = 0;

while ((value = fis.read()) != -1)
{

sb.append((char) value);

}
fis.close();

String result = new String(sb.toString().getBytes("ISO-8859-1"), "GBK");

System.out.println(result);