How to upload file in spring?

java spring spring-mvc servlets spring-web

26,258

Solution 1

in your controller you need to specify that you are expecting mutlipart

using

consumes = {"multipart/form-data"}

and to ge the file name using getOriginalFileName()

@RequestMapping(method = RequestMethod.POST, consumes = {"multipart/form-data"})
public String importQuestion(@Valid @RequestParam("uploadedFileName") 
MultipartFile multipart,  BindingResult result, ModelMap model) {
   logger.debug("Post method of uploaded Questions ");

    logger.debug("Uploaded file Name : " + multipart.getOriginalFilename());
   return "importQuestion";
}

Also in your html the name of your input of type file should be the same as the RequestParam "uploadedFileName"

     <input type="file" name="uploadFileName" id="fileToUpload" required="" >

change it to

  <input type="file" name="uploadedFileName" id="fileToUpload" required="" >

Solution 2

You can also use MutlipartFile in order to upload file as follow.

@RequestMapping(value = "/uploadFile", method = RequestMethod.POST)
 @ResponseBody
 public String uploadFile(@RequestParam("file") MultipartFile file) {

 try {

 String uploadDir = "/uploads/";
 String realPath = request.getServletContext().getRealPath(uploadDir);

 File transferFile = new File(realPath + "/" + file.getOriginalFilename()); 
 file.transferTo(transferFile);

 } catch (Exception e) {

 e.printStackTrace();

 return "Failure";
 }

 return "Success";
 }

You don't need to use spring form for file upload, you can do it with plain HTML

<html>
<body>
 <h2>Spring MVC file upload using Annotation configuration Metadata</h2>

 Upload File :

 <form name="fileUpload" method="POST" action="uploadFile" enctype="multipart/form-data">
 <label>Select File</label> <br />
 <input type="file" name="file" />
 <input type="submit" name="submit" value="Upload" />
 </form>
</body>
</html>

You need to configure MultipartResolver object in yours application configuration as follow

@Bean(name="multipartResolver")
 public CommonsMultipartResolver multipartResolver() {
 CommonsMultipartResolver multi = new CommonsMultipartResolver();
 multi.setMaxUploadSize(100000);

 return multi;
 }

You can follow complete tutorial on how to upload file in Spring Framework Upload File in Spring MVC framework

26,258

Author by

Anupam Choudhary

Updated on July 09, 2022

Comments

Anupam Choudhary almost 2 years

I am not able to get the file name in spring controller

<form:form method="post" modelAttribute="sampleDetails" 
 enctype="multipart/form-data">
    <input type="file" name="uploadedFileName" id="fileToUpload" required="" >
    <input type="submit" name="import_file" value="Import File" id="" />
</form:form>

Its my post method in controller

@RequestMapping(method = RequestMethod.POST)
public String importQuestion(@Valid @RequestParam("uploadedFileName") 
MultipartFile multipart, @ModelAttribute("sampleDetails") SampleDocumentPojo sampleDocument,  BindingResult result, ModelMap model) {
    logger.debug("Post method of uploaded Questions ");

    logger.debug("Uploaded file Name : " + multipart.getName());
    return "importQuestion";
}

After submit get the warning message.

 warning [http-nio-8080-exec-9] WARN 
 org.springframework.web.servlet.PageNotFound - Request method 'POST' not 
 supported
 [http-nio-8080-exec-9] WARN 
 org.springframework.web.servlet.mvc.support.DefaultHandlerExceptionResolver 
 - Handler execution resulted in exception: Request method 'POST' not 
 supported