Springmvc文件上传与下载

标签：des   http   io   os   ar   java   for   文件   sp   

（上传）

１.jar包与springmvc.xml

将request包装成MultipartHttpServletRequest.

2.页面

注意method为post

3.action

  方法一解析(request)

方法二(参数)

(下载)

166. @RequestMapping("/download/{fileName}")  
167.     public ModelAndView download(@PathVariable("fileName")  
168.     String fileName, HttpServletRequest request, HttpServletResponse response)  
169.             throws Exception {  
170.   
171.         response.setContentType("text/html;charset=utf-8");  
172.         request.setCharacterEncoding("UTF-8");  
173.         java.io.BufferedInputStream bis = null;  
174.         java.io.BufferedOutputStream bos = null;  
175.   
176.         String ctxPath = request.getSession().getServletContext().getRealPath(  
177.                 "/")  
178.                 + "\\" + "images\\";  
179.         String downLoadPath = ctxPath + fileName;  
180.         System.out.println(downLoadPath);  
181.         try {  
182.             long fileLength = new File(downLoadPath).length();  
183.             response.setContentType("application/x-msdownload;");  
184.             response.setHeader("Content-disposition", "attachment; filename="  
185.                     + new String(fileName.getBytes("utf-8"), "ISO8859-1"));  
186.             response.setHeader("Content-Length", String.valueOf(fileLength));  
187.             bis = new BufferedInputStream(new FileInputStream(downLoadPath));  
188.             bos = new BufferedOutputStream(response.getOutputStream());  
189.             byte[] buff = new byte[2048];  
190.             int bytesRead;  
191.             while (-1 != (bytesRead = bis.read(buff, 0, buff.length))) {  
192.                 bos.write(buff, 0, bytesRead);  
193.             }  
194.         } catch (Exception e) {  
195.             e.printStackTrace();  
196.         } finally {  
197.             if (bis != null)  
198.                 bis.close();  
199.             if (bos != null)  
200.                 bos.close();  
201.         }  
202.         return null;  
203.     }  
204. }  

Springmvc文件上传与下载

标签：des   http   io   os   ar   java   for   文件   sp   

原文地址：http://www.cnblogs.com/qingfengmuyang/p/4025404.html