Java-spring-mvc _ configure the controller file in the upper and lower layers, java-spring-mvc

Java-spring-mvc _ configure the controller file in the upper and lower layers, java-spring-mvc

Download:

1. Configure in spring-mvc (for downloading files below MB)

1. <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter"> 
2. <property name="messageConverters"> 
3. <list> 
4. <! -- Configure the download return type -->
5. <bean class="org.springframework.http.converter.ByteArrayHttpMessageConverter"/> 
6.  
7. <bean class="org.springframework.http.converter.StringHttpMessageConverter"> 
8. <! -- Configure the encoding method -->
9. <property name="supportedMediaTypes" value="application/json; charset=UTF-8" /> 
10. </bean> 
11. </list> 
12. </property> 
13. </bean>

Download file code

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
   ***/
   // Download to Prevent Static Loading interference
   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"); // to solve Chinese name garbled Problem
   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;
   }

Upload File: 1 configure in spring-mvc

1. <! -- 4. file upload Configuration 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>

 

The code in controller is as follows:

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.     }