博客
关于我
java后台通过http请求下载文件
阅读量:809 次
发布时间:2023-01-28

本文共 1844 字,大约阅读时间需要 6 分钟。

 java后台通过http请求下载文件,直接反馈给前端

public void downLoad(HttpServletResponse response,String HTTP_URL, String filename) {	        BufferedInputStream bis = null;	        BufferedOutputStream bos = null;	        try {	            URL url = new URL(HTTP_URL);	            HttpURLConnection connection = (HttpURLConnection)url.openConnection();	            connection.setRequestMethod("GET");	            connection.setConnectTimeout(5000);	            connection.setReadTimeout(6000);	            connection.connect();	            int responseCode = connection.getResponseCode();	            System.out.println("responseCode=" + responseCode);	            if (responseCode == 200) {	                InputStream is = connection.getInputStream();	                bis = new BufferedInputStream(is);	                response.reset();	                response.setContentType("application/x-msdownload");	                response.setHeader("Content-Disposition", "attachment;filename=".concat(new String(filename.getBytes("GBK"), "ISO-8859-1")));	                OutputStream fos = response.getOutputStream();	                bos = new BufferedOutputStream(fos);	                boolean b = false;	                byte[] byArr = new byte[1024];	                int b1;	                while((b1 = bis.read(byArr)) != -1) {	                    bos.write(byArr, 0, b1);	                }	                bos.flush();	            }	            connection.disconnect();	        } catch (Exception var21) {	            var21.printStackTrace();	        } finally {	            try {	                if (bis != null) {	                    bis.close();	                }	                if (bos != null) {	                    bos.close();	                }	            } catch (IOException var20) {	                var20.printStackTrace();	            }	        }	    }

 

转载地址:http://tsryk.baihongyu.com/

你可能感兴趣的文章
MySQL binlog三种模式
查看>>
multi-angle cosine and sines
查看>>
Mysql Can't connect to MySQL server
查看>>
mysql case when 乱码_Mysql CASE WHEN 用法
查看>>
Multicast1
查看>>
MySQL Cluster 7.0.36 发布
查看>>
Multimodal Unsupervised Image-to-Image Translation多通道无监督图像翻译
查看>>
MySQL Cluster与MGR集群实战
查看>>
multipart/form-data与application/octet-stream的区别、application/x-www-form-urlencoded
查看>>
mysql cmake 报错,MySQL云服务器应用及cmake报错解决办法
查看>>
Multiple websites on single instance of IIS
查看>>
mysql CONCAT()函数拼接有NULL
查看>>
multiprocessing.Manager 嵌套共享对象不适用于队列
查看>>
multiprocessing.pool.map 和带有两个参数的函数
查看>>
MYSQL CONCAT函数
查看>>
multiprocessing.Pool:map_async 和 imap 有什么区别?
查看>>
MySQL Connector/Net 句柄泄露
查看>>
multiprocessor(中)
查看>>
mysql CPU使用率过高的一次处理经历
查看>>
Multisim中555定时器使用技巧
查看>>