import java.io.BufferedInputStream;  import java.io.BufferedOutputStream;  import java.io.File;  import java.io.FileInputStream;  import java.io.FileNotFoundException;  import java.io.FileOutputStream;  import java.io.IOException;  import java.io.InputStream;  import java.util.zip.ZipEntry;  import java.util.zip.ZipException;  import java.util.zip.ZipFile;  import java.util.zip.ZipInputStream;  import java.util.zip.ZipOutputStream;     /**   * 文件解压缩   *   * @author Tony   *   */  public final class FileToZip {         FileToZip() {         }         /**       * 将存放在sourceFilePath目录下的源文件,打包成fileName名称的ZIP文件,并存放到zipFilePath。       *       * @param sourceFilePath       *            待压缩的文件路径       * @param zipFilePath       *            压缩后存放路径       * @param fileName       *            压缩后文件的名称       * @return flag       */      public static boolean fileToZip(String sourceFilePath, String zipFilePath,                                      String fileName) {          boolean flag = false;          File sourceFile = new File(sourceFilePath);          FileInputStream fis = null;          BufferedInputStream bis = null;          FileOutputStream fos = null;          ZipOutputStream zos = null;             if (sourceFile.exists() == false) {              System.out.println(">>>>>> 待压缩的文件目录：" + sourceFilePath                                 + " 不存在. <<<<<<");          } else {              try {                  File zipFile = new File(zipFilePath + "/" + fileName + ".RAR");                  //                File zipFile = new File(zipFilePath + "/" + fileName + ".zip");                  if (zipFile.exists()) {                      System.out.println(">>>>>> " + zipFilePath + " 目录下存在名字为："                                         + fileName + ".RAR" + " 打包文件. <<<<<<");                  } else {                      File[] sourceFiles = sourceFile.listFiles();                      if (null == sourceFiles || sourceFiles.length < 1) {                          System.out.println(">>>>>> 待压缩的文件目录：" + sourceFilePath                                             + " 里面不存在文件,无需压缩. <<<<<<");                      } else {                          fos = new FileOutputStream(zipFile);                          zos = new ZipOutputStream(new BufferedOutputStream(fos));                          byte[] bufs = new byte[1024 * 10];                          for (int i = 0; i < sourceFiles.length; i++) {                              // 创建ZIP实体,并添加进压缩包                              ZipEntry zipEntry = new ZipEntry(sourceFiles[i]                                                               .getName());                              zos.putNextEntry(zipEntry);                              // 读取待压缩的文件并写进压缩包里                              fis = new FileInputStream(sourceFiles[i]);                              bis = new BufferedInputStream(fis, 1024 * 10);                              int read = 0;                              while ((read = bis.read(bufs, 0, 1024 * 10)) != -1) {                                  zos.write(bufs, 0, read);                              }                          }                          flag = true;                      }                  }              } catch (FileNotFoundException e) {                  e.printStackTrace();                  throw new RuntimeException(e);              } catch (IOException e) {                  e.printStackTrace();                  throw new RuntimeException(e);              } finally {                  // 关闭流                  try {                      if (null != bis)                          bis.close();                      if (null != zos)                          zos.close();                  } catch (IOException e) {                      e.printStackTrace();                      throw new RuntimeException(e);                  }              }          }             return flag;      }         public static void unZip(String sourceFilePath, String unzipFilePath) {          File sourceFile = new File(sourceFilePath);          ZipFile zipFile = null;          ZipEntry zipEntry = null;          ZipInputStream zis = null;          FileOutputStream fos = null;          FileInputStream fis = null;             if (sourceFile.exists() == false) {              System.out.println(">>>>>> 待解压的文件目录：" + sourceFilePath                                 + " 不存在. <<<<<<");          } else {              try {                  System.out.println(">>>>>> 开始解压：" + sourceFilePath + " <<<<<<");                  zipFile = new ZipFile(sourceFile);                  zis = new ZipInputStream(new FileInputStream(sourceFile));                  while ((zipEntry = zis.getNextEntry()) != null) {                      String fileName = zipEntry.getName();                      File temp = new File(unzipFilePath + "\\" + fileName);                      System.out.println(fileName + ">>>>>>解压到" + unzipFilePath);                      if (!temp.getParentFile().exists()) {                          temp.getParentFile().mkdirs();                      }                      fos = new FileOutputStream(temp);                      InputStream is = zipFile.getInputStream(zipEntry);                      int len = 0;                      while ((len = is.read()) != -1) {                          fos.write(len);                      }                      is.close();                  }                 } catch (FileNotFoundException e) {                  // TODO Auto-generated catch block                  e.printStackTrace();              } catch (ZipException e) {                  // TODO Auto-generated catch block                  e.printStackTrace();              } catch (IOException e) {                  // TODO Auto-generated catch block                  e.printStackTrace();              } finally {                  // 关闭流                  try {                      if (null != fos)                          fos.close();                      if (null != fis)                          fis.close();                      if (null != zis)                          zis.close();                  } catch (IOException e) {                      e.printStackTrace();                      throw new RuntimeException(e);                  }              }          }         }         /**       * 将文件打包成ZIP压缩文件,main方法测试       *       * @param args       */      public static void main(String[] args) {          String sourceFilePath = "D:\\sss\\lp20120301.rar";          // String zipFilePath = "D:\\sss";          // String fileName = "lp20120301";          // boolean flag = FileToZip.fileToZip(sourceFilePath, zipFilePath,          // fileName);          // if(flag) {          // System.out.println(">>>>>> 文件打包成功. <<<<<<");          // } else {          // System.out.println(">>>>>> 文件打包失败. <<<<<<");          // }          FileToZip.unZip(sourceFilePath, "E:\\sdf");      }  }