java解压zip文件到指定位置

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public void upZip(String merchantZipPath, String     merchantUnZipPath,String fileDate) {    String filePath = merchantZipPath+File.separator+"merchant_good_"+fileDate+".zip";    File file = new File(filePath);    ZipFile zipFile = null;    try {        zipFile = new ZipFile(file,Charset.forName("GBK"));//设置编码格式        Enumeration e = zipFile.entries();        while(e.hasMoreElements()){            ZipEntry zipEntry = (ZipEntry) e.nextElement();            String name = zipEntry.getName();            if(zipEntry.isDirectory()){                name = name.substring(0,name.length()-1);                File file2 = new File(merchantUnZipPath+File.separator+name);                   file2.mkdirs();            }else {                File file2 = new File(merchantUnZipPath+File.separator+"merchant_good_"+fileDate+File.separator+name);                file2.getParentFile().mkdirs();                file2.createNewFile();                InputStream in = zipFile.getInputStream(zipEntry);                FileOutputStream out = new FileOutputStream(file2);                int length = 0;                byte[] readByte =new byte[1024];                try {                    while((length=in.read(readByte,0,1024))!=-1){                        out.write(readByte, 0, length);                      }                                   } catch (Exception e2) {                    logger.error("解压文件失败!",e2);                }finally {                                      CommUtil.releaseIO(in, out);                }            }        }    } catch (IOException e) {        logger.error("解压文件不存在!",e);    }
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