JavaWeb实现压缩多个文件并下载实例详解_Java教程

JavaWeb实现压缩多个文件并下载实例详解

2020-12-08 15:12Nreo Java教程

本文通过实例代码给大家讲解了javaweb实现压缩多个文件并下载功能，非常不错，具有参考借鉴价值，需要的朋友参考下吧

下面一段代码给大家分享JavaWeb实现压缩多个文件并下载功能，具体代码如下所示：

									//文件名称

									    String[] names={"one.jpg","two.jpg","three.jpg","four.jpg"};

									    //四个文件流

									    FileInputStream input1 = new FileInputStream(new File("文件路径"));

									    FileInputStream input2 = new FileInputStream(new File("文件路径"));

									    FileInputStream input3 = new FileInputStream(new File("文件路径"));

									    FileInputStream input4 = new FileInputStream(new File("文件路径"));

									    FileInputStream[] inputs={input1,input2,input3,input4};

									    //ZIP打包图片

									    File zipFile = new File("压缩文件存放路径");

									    byte[] buf = new byte[1024];

									    int len;

									    ZipOutputStream zout=new ZipOutputStream(new FileOutputStream(zipFile));

									    for (int i = 0; i < inputs.length; i++) { 

									      FileInputStream in =inputs[i]; 

									      zout.putNextEntry(new ZipEntry(names[i]));  

									      while ((len = in.read(buf)) > 0) { 

									        zout.write(buf, 0, len); 

									      } 

									      zout.closeEntry(); 

									      in.close(); 

									    }

									    zout.close();

									    //下载图片

									    FileInputStream zipInput =new FileInputStream(zipFile);

									    OutputStream out = response.getOutputStream();

									    response.setContentType("application/octet-stream");

									    response.setHeader("Content-Disposition", "attachment; filename=images.zip");

									    while ((len=zipInput.read(buf))!= -1){ 

									      out.write(buf,0,len); 

									    }

									    zipInput.close();

									    out.flush();

									    out.close();

									    //删除压缩包

									    zipFile.delete();