oss文件下载

谁践踏了优雅 2022-02-01 05:53 193阅读 0赞

@RequestMapping(value = "/downFile")
    	@ResponseBody
    	public void downFile(HttpServletRequest request, HttpServletResponse response) {
    		BufferedInputStream input = null;
    		OutputStream outputStream = null;
    		try {
                String filePath = request.getParameter("path");
                filePath = filePath.replaceAll("\\\\", "/");
                String fileName = getName(filePath);
    
                response.reset();
                response.setCharacterEncoding("utf-8");
                response.setContentType("application/x-msdownload");
                response.addHeader("Content-Disposition", "attachment;filename=" + new String(fileName.getBytes("gb2312"),"ISO8859-1"));
                // endpoint,accessKeyId,accessKeySecret,bucketName是oss自带参数，登陆oss查看，或者给公司要，fileName是文件上传到oss后的文件名
                OSSClient ossClient = new OSSClient(endpoint, accessKeyId, accessKeySecret);
                OSSObject object = ossClient.getObject(bucketName, fileName);
                input = new BufferedInputStream(object.getObjectContent());
                byte[] buffBytes = new byte[1024];        
                outputStream = response.getOutputStream();          
                int read = 0;
                while ((read = input.read(buffBytes)) != -1) {
                     outputStream.write(buffBytes, 0, read);
                }     
                outputStream.flush();
                ossClient.shutdown();
            } catch (IOException ex) {
                ex.printStackTrace();
            } finally {
                try {
                	if (outputStream != null) {
                		outputStream.close();
                	}
                	if (input != null) {
                		input.close();
                	}
    			} catch (IOException e) {
    				// TODO Auto-generated catch block
    				e.printStackTrace();
    			}
            }
    	}
    	
    	// 获取添加后的文件名称
    	public String getName(String filepath) {
    		if (!filepath.equals(null)) {
    			if (filepath.contains("/")) {
    				return filepath.substring(filepath.lastIndexOf("/") + 1);
    			}
    		}
    		return "";
    	}