JavaWeb实现压缩多个文件并下载实例详解

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();

总结

以上所述是小编给大家介绍的javaweb实现压缩多个文件并下载实例详解，希望对大家有所帮助