删除文件:
String filePath = "";
String cmd = "rm -rf " + filePath;
Process process = Runtime.getRuntime().exec(cmd);
int cmdvalue = process.waitFor();//等子进程执行完即命令执行完毕返回才继续执行
if (cmdvalue == 0)
{
//处理
}
文件解压缩:
public static void unzipFile(String dir, String fileurl) throws Exception
{
int buffer = 1024;
File rootdir = new File(dir);
if (!rootdir.exists())
{
track.info(Helper.class, "unzipFile() create dir :" + rootdir,
log, Logger.DEBUG);
rootdir.mkdirs();
}
try
{
BufferedOutputStream dest = null;
FileInputStream fis = new FileInputStream(fileurl);
ZipInputStream zis = new ZipInputStream(new BufferedInputStream(fis));
ZipEntry entry;
while ((entry = zis.getNextEntry()) != null)
{
track.info(Helper.class, "unzipFile() extracting: " + entry,
log, Logger.DEBUG);
int count;
byte data[] = new byte[buffer];
if (entry.isDirectory() || entry.getName().endsWith("//"))
{
// write the files to the disk
//是目录!
File subdir = null;
if (entry.getName().endsWith("//"))
{
track.info(Helper.class, "isdirectory! and endswith //!!!");
String entrynametemp = entry.getName().replaceAll("//",
"/");
subdir = new File(dir + entrynametemp);
} else
{
subdir = new File(dir + entry.getName());
}
if (!subdir.exists())
{
subdir.mkdirs();
track.info(Helper.class,
"unzipFile() create sub_dir:"
+ dir + entry.getName());
}
} else
{
//是文件!
FileOutputStream fos = new FileOutputStream(
dir + entry.getName());
track.info(Helper.class, "unzipFile() creating files : "
+ dir + entry.getName(), log, Logger.DEBUG);
dest = new BufferedOutputStream(fos, buffer);
while ((count = zis.read(data, 0, buffer)) != -1)
{
dest.write(data, 0, count);
}
dest.flush();
dest.close();
}
}
zis.close();
} catch (Exception ex)
{
//异常处理。
}
}