java-spring-mvc_上傳下載文件配置及controller方法

下載：

1. <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> 
2. <property name="messageConverters"> 
3. <list> 
4. <!--配置下載返回類型-->
5. <bean class="org.springframework.http.converter.ByteArrayHttpMessageConverter"/> 
6.  
7. <bean class="org.springframework.http.converter.StringHttpMessageConverter"> 
8. <!--配置編碼方式-->
9. <property name="supportedMediaTypes" value="application/json; charset=UTF-8" /> 
10. </bean> 
11. </list> 
12. </property> 
13. </bean>

1. @RequestMapping("/file/{name.rp}")
   public ResponseEntity<byte[]> fileDownLoad(@PathVariable("name.rp")String name, HttpServletRequest request,HttpServletResponse response) {
   // @PathVariable String name,
   // @RequestParam("name")String name,
   // System.out.println("<name>"+name);
   // System.out.println(">>>>>>>>>>>>>>>>>>>>>>>>>>>>>>");
   ResponseEntity<byte[]> re = null;
   try {
   /**
   * css,js,json,gif,png,bmp,jpg,ico,doc,docx,xls,xlsx,txt,swf,pdf
   * **/
   //下載防止靜態載入干擾
   Feelutile f=new Feelutile();
   name=f.getfileformat(name);
   
   String pathString="C:\\tempDirectory\\"+name;
   File file=new File(pathString);
   HttpHeaders headers=new HttpHeaders();
   //String filename=URLEncoder.encode(name, "UTF-8");//為瞭解決中文名稱亂碼問題
   String filename=new String(name.getBytes("utf-8"),"utf-8");
   byte[] by=FileUtils.readFileToByteArray(file);
   headers.setContentType(MediaType.APPLICATION_OCTET_STREAM);
   //URLEncoder.encode(filename, "UTF-8")
   headers.setContentDispositionFormData("attachment",filename);
   headers.setContentLength(by.length);
   re=new ResponseEntity<byte[]>(by, headers, HttpStatus.CREATED);
   } catch (Exception e) {
   e.printStackTrace();
   try {
   request.getRequestDispatcher("/error/404.jsp").forward(request, response);
   } catch (ServletException e1) {
   // TODO Auto-generated catch block
   e1.printStackTrace();
   } catch (IOException e1) {
   // TODO Auto-generated catch block
   e1.printStackTrace();
   }
   }
   return re;
   }

1. <!--4.文件上傳 配置 file upload -->
2.     <bean id="multipartResolver"
3.         class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
4.         <property name="defaultEncoding">
5.             <value>UTF-8</value>
6.         </property>
7.         <property name="maxUploadSize">
8.             <value>1048576000</value>
9.         </property>
10.         <property name="maxInMemorySize">
11.             <value>40960</value>
12.         </property>
13.     </bean>

在controller中代碼如下

1. @RequestMapping(value="/upload", method = RequestMethod.POST)
2.     @ResponseBody
3.     public Json upload(Doc doc, @RequestParam("uploadFile") CommonsMultipartFile file) {
4.         Json j = new Json();
5.         
6.         try {
7.             String realpath = this.servletContext.getRealPath("/upload");            
8.             String uploadFileFileName = file.getOriginalFilename();            
9.             String uploadFileFileNameWithoutSpace = uploadFileFileName.replaceAll(" ", "");        
10.             String fileType = uploadFileFileNameWithoutSpace.substring(uploadFileFileNameWithoutSpace.lastIndexOf("."));
11.             
12.             File targetFile = new File(realpath+File.separator, uploadFileFileNameWithoutSpace);
13.             if (targetFile.exists()) {
14.                 targetFile.delete();
15.             }
16.             file.getFileItem().write(targetFile);        
17.             docService.upload(doc,uploadFileFileNameWithoutSpace);
18.             
19.             j.setSuccess(true);
20.             j.setMsg("Upload manual successfully");
21.             
22.         }catch (Exception e) {
23.             logger.error(ExceptionUtil.getExceptionMessage(e));
24.             j.setMsg("Upload manual unsuccessfully");
25.         }
26.         
27.         return j;
28.     }