Multiple Files upload in spring mvc

Question

I am trying to upload multiple files using spring mvc and commons-fileupload*.jar. I am using HttpServletRequest for getting the request object and then request.getPart() to get file part. But when I run the code I found below error.

java.lang.IllegalStateException: Unable to process parts as no multi-part configuration has been provided

the code is as below:

public ModelAndView uploadCon(@RequestParam Map<String,String> map, HttpServletRequest request)
{
    Part part1=request.getPart("wallpaper0");
    Part part2=request.getPart("wallpaperx");
    //then write these files 
}

the spring-servlet.xml file has the bean defined as below:

<bean id="multipartResolver"  class="org.springframework.web.multipart.commons.CommonsMultipartResolver"/>

Answer 1

Here is the sample

@RequestMapping(value = "/upload", method = RequestMethod.POST)
public @ResponseBody
ResponseEntity<Map<String, Object>> handleFileUpload(
        @RequestParam("file1") MultipartFile file1,
        @RequestParam("file2") MultipartFile file2) {
    Map<String, Object> map = new HashMap<String, Object>();
    map.put("status", "failure");
    try {
        if (!file1.isEmpty() && !file2.isEmpty()) {

            // get the files here

            map.put("status", "success");
        }
    } catch (Exception e) {
        LOGGER.severe(e.toString());
    }

    ResponseEntity<Map<String, Object>> responseEntity = new ResponseEntity<Map<String, Object>>(
            map, HttpStatus.OK);

    return responseEntity;
}

and make sure that you have added

<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
            <property name="maxUploadSize" value="50000000"/>
</bean>

in your spring.xml file.

Or refer this sample if you want to get a list of files as List<MultipartFile>.