ZipInputStream zin = new ZipInputStream(in);
ZipEntry ze;
// getNextEntry返回描述這個項的ZipEntry的對象
while ((ze = zin.getNextEntry()) != null) {
    // getInputStream獲取用于讀取該項的輸入流
        BufferedReader br = new BufferedReader(
                new InputStreamReader(zf.getInputStream(ze), charset));
  // 業(yè)務邏輯 todo
        br.close();
  // closeEntry關閉當前打開的項
    zin.closeEntry();
}
zin.close();

ZipOutputStream zipOut = new ZipOutputStream(new FileOutputStream(zipFile));
File fileWillZip = new File(dir);
if (fileWillZip.exists()) {
    // 需要壓縮的文件是文件夾。需要遞歸進行壓縮
    if(fileWillZip.isDirectory()){
        compressZip(zipOut,fileWillZip,fileWillZip.getName());
    } else { // 是文件，直接壓縮
        zip(zipOut,fileWillZip,dir);
    }
}
zipOut.closeEntry();
zipOut.close();
private void compressZip(ZipOutputStream zipOutput, File file, String suffixpath) {
        File[] listFiles = file.listFiles();// 列出所有的文件
        for(File fi : listFiles){
            if(fi.isDirectory()){ // 如果是文件夾，繼續(xù)遞歸
                if(suffixpath.equals("")){
                    compressZip(zipOutput, fi, fi.getName());
                }else{
                    compressZip(zipOutput, fi, suffixpath + File.separator + fi.getName());
                }
            }else{
                zip(zipOutput, fi, suffixpath);
            }
        }
    }
    public void zip(ZipOutputStream zipOutput, File file, String suffixpath) {
        try {
          // 創(chuàng)建ZipEntry對象
            ZipEntry zEntry = null;
            if(suffixpath.equals("")){
                zEntry = new ZipEntry(file.getName());
            }else{
                zEntry = new ZipEntry(suffixpath + File.separator + file.getName());
            }
          // putNextEntry將給定的ZipEntry中的信息寫出到輸出流，并定位用于寫出數(shù)據的流，然后這些數(shù)據可以通過write方法寫出到這個輸出流中
            zipOutput.putNextEntry(zEntry);
            BufferedInputStream bis = new BufferedInputStream(new FileInputStream(file));
            byte[] buffer = new byte[1024];
            int read = 0;
            while((read = bis.read(buffer)) != -1){
                zipOutput.write(buffer, 0, read);
            }
            bis.close();
        } catch (Exception e) {
            e.printStackTrace();
        }
    }