JAVA实现文件下载打包（精简版）

雨点打透心脏的1/2处 2022-05-27 01:54 204阅读 0赞

出处：[https://blog.csdn.net/sunkuixing/article/details/63255006][https_blog.csdn.net_sunkuixing_article_details_63255006]

要求将多个存在某url地址的图片,打包为zip下载下来

JAVA实现文件下载打包（精简版）

public void download(HttpServletRequest request, HttpServletResponse response){
    
                try {
                    String downloadFilename = "中文.zip";//文件的名称
                    downloadFilename = URLEncoder.encode(downloadFilename, "UTF-8");//转换中文否则可能会产生乱码
                    response.setContentType("application/octet-stream");// 指明response的返回对象是文件流 
                    response.setHeader("Content-Disposition", "attachment;filename=" + downloadFilename);// 设置在下载框默认显示的文件名
                    ZipOutputStream zos = new ZipOutputStream(response.getOutputStream());
                    String[] files = new String[]{"http://xxxx/xx.jpg","http://xxx/xx.jpg"};
                    for (int i=0;i<files.length;i++) {
                        URL url = new URL(files[i]);
                       zos.putNextEntry(new ZipEntry(i+".jpg"));
                       //FileInputStream fis = new FileInputStream(new File(files[i]));  
                       InputStream fis = url.openConnection().getInputStream();   
                       byte[] buffer = new byte[1024];     
                       int r = 0;     
                       while ((r = fis.read(buffer)) != -1) {     
                           zos.write(buffer, 0, r);     
                       }     
                       fis.close();   
                      }  
                    zos.flush();     
                    zos.close();
                } catch (UnsupportedEncodingException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                } catch (IOException e) {
                    // TODO Auto-generated catch block
                    e.printStackTrace();
                }  
        }

[https_blog.csdn.net_sunkuixing_article_details_63255006]: https://blog.csdn.net/sunkuixing/article/details/63255006