Java多文件以ZIP压缩包导出的实现方法

public class ImageByteUtil{  private static float QUALITY = 0.6f;  public static void compressZip(List<File> listfiles, OutputStream output,String encode, boolean compress,String alias){  ZipOutputStream zipStream = null;  try {      zipStream = new ZipOutputStream(output);      for (File file : listfiles){        compressZip(file, zipStream, compress,alias+"_"+(listfiles.indexOf(file)+1));      }    } catch (Exception e) {      e.printStackTrace();    }finally {      try {         if (zipStream != null) {           zipStream.close();         }       } catch (IOException e) {         e.printStackTrace();       }    }  }private static void compressZip(File file, ZipOutputStream zipStream,       boolean compress,String alias) throws Exception{    FileInputStream input = null;    try {      input = new FileInputStream(file);       //zip(input, zipStream, file.getName(), compress);       zip(input, zipStream, alias+"."+file.getName().substring(file.getName().lastIndexOf(".")+1), compress);    } catch (Exception e) {      e.printStackTrace();    }finally {      try {         if(input != null)           input.close();       } catch (IOException e) {         e.printStackTrace();       }    }  }private static void zip(InputStream input, ZipOutputStream zipStream,       String zipEntryName, boolean compress) throws Exception{      byte[] bytes = null;     BufferedInputStream bufferStream = null;     try {       if(input == null)         throw new Exception("获取压缩的数据项失败! 数据项名为：" + zipEntryName);       // 压缩条目不是具体独立的文件，而是压缩包文件列表中的列表项，称为条目，就像索引一样       ZipEntry zipEntry = new ZipEntry("图片/"+zipEntryName);      // 定位到该压缩条目位置，开始写入文件到压缩包中       zipStream.putNextEntry(zipEntry);      if (compress) {         bytes = ImageByteUtil.compressOfQuality(input, 0);         zipStream.write(bytes, 0, bytes.length);       } else {        bytes = new byte[1024 * 5];// 读写缓冲区         bufferStream = new BufferedInputStream(input);// 输入缓冲流         int read = 0;         while ((read = bufferStream.read(bytes)) != -1) {          zipStream.write(bytes, 0, read);         }       }     } catch (IOException e) {       e.printStackTrace();     } finally {       try {         if (null != bufferStream)           bufferStream.close();       } catch (IOException e) {         e.printStackTrace();       }     }  }  public static byte[] compressOfQuality(File file, float quality) throws Exception{    byte[] bs = null;     InputStream input = null;     try {       input = new FileInputStream(file);       bs = compressOfQuality(input,quality);    } catch (Exception e) {       e.printStackTrace();     } finally {       try {         if (input != null)           input.close();       } catch (IOException e) {         e.printStackTrace();       }     }     return bs;  }  public static byte[] compressOfQuality(InputStream input, float quality)       throws Exception {      ByteArrayOutputStream output = null;     try {       output = new ByteArrayOutputStream();       if(quality == 0){         Thumbnails.of(input).scale(1f).outputQuality(QUALITY)         .toOutputStream(output);       } else {         Thumbnails.of(input).scale(1f).outputQuality(quality).toOutputStream(output);       }       return output.toByteArray();     } catch (Exception e) {       e.printStackTrace();     } finally {       try {         if (output != null)           output.close();       } catch (IOException e) {         e.printStackTrace();       }     }     return null;  }}

public static void main(String[] args){  //要导出的文件集合,添加自己需要导出的文件  List<File> ListFiles = new ArrayList<>();  //调用工具类,参数说明（需要导出的文件集，ByteArrayOutputStream对象，编码，是否压缩【true，false】，文件名称前缀）  ImageByteUtil.compressZip(ListFiles, out, "UTF-8", false,"LWJ");  //指定导出格式  ReturnContext.addParam("exportFileName","extFile.zip");  ReturnContext.addParam("mimeType", "zip");  return in;}