Spring 文件上传 - “所需的请求部分不存在”

Question

I am trying to send POST request to my controller but cannot pass any parameter in any type unless I decide to use JSON. My goal is to pass a String and a file to my controller but I keep getting Required request part 'xxx' is not present error.

@RestController
public class ConfigurationController {
    @PostMapping(value = "/config")
    public ResponseEntity<?> saveEnvironmentConfig(@RequestParam("file") MultipartFile uploadfile){
        return ResponseEntity.ok().body(null);
    }
}

I cannot have file here. Similarly if I try:

@RestController
public class ConfigurationController {
    @PostMapping(value = "/config")
    public ResponseEntity<?> saveEnvironmentConfig(@RequestParam("name") String name){
        return ResponseEntity.ok().body(null);
    }
}

same thing I cannot get name here.

I am sending request via Postman as given in following screenshot:

The only header tag is for Authorization. I do not have any Content-Type header, I tried to add multipart/form-data but did not help.

Only way I could pass String parameter is by adding to URL. So following http://localhost:8080/SearchBox/admin/config?name=test works but this is not what I want. I want String and File parameters in Body part.

I also tested via CURL:

curl -X POST -H "Authorization:Bearer myToken" -H "Content-Type:Multipart/form-data" http://localhost:8080/SearchBox/admin/config --data 'pwd=pwd'
curl -X POST -H "Authorization:Bearer myToken"http://localhost:8080/SearchBox/admin/config --data 'pwd=pwd'
curl -H "Authorization:Bearer myToken" -F file=@"/g123.conf" http://localhost:8080/SearchBox/admin/config

Note: I checked similar posts already but did not help This , This , This

Answer 1

I finally solved the issue and sharing my solution in case someone else may face the same problem.

@RestController
@RequestMapping("/")
public class ConfigurationController {

    @Bean
    public MultipartConfigElement multipartConfigElement() {
        return new MultipartConfigElement("");
    }

    @Bean
    public MultipartResolver multipartResolver() {
        org.springframework.web.multipart.commons.CommonsMultipartResolver multipartResolver = new org.springframework.web.multipart.commons.CommonsMultipartResolver();
        multipartResolver.setMaxUploadSize(1000000);
        return multipartResolver;
    }
    @PostMapping(value = "/config", consumes = "multipart/form-data")
    public ResponseEntity<?> saveEnvironmentConfig(@RequestParam("password") String password, @RequestParam("file") MultipartFile submissions)
            throws AdminAuthenticationException, ConfigurationException {
        return ResponseEntity.ok().body(null);
    }
}

Answer 2

@RequestMapping(value = "/upload", method = RequestMethod.POST)
public ResponseEntity<?> upload(@RequestParam(value = "name") String 
name,@RequestParam(value = "file") MultipartFile file){
    // TODO check file is not null and save 
    return new ResponseEntity<>(HttpStatus.valueOf(200));;
}

Answer 3

Add Bean to Config file.

@Bean(name = "multipartResolver")
public CommonsMultipartResolver multipartResolver() {
    CommonsMultipartResolver multipartResolver = new CommonsMultipartResolver();
    multipartResolver.setMaxUploadSize(-1);
    return multipartResolver;

}

Answer 4

While this was not the original poster's problem, if you found this question and none of the above solutions worked for you, check your Postman headers; if "Content-Type" header is set, this may cause the error above.

Remove the "Content-Type" header and it may resolve the issue above.

See this question for more information:

Postman: Required request part 'file' is not present

Answer 5

If you still getting error, try to remove all headers from postman and drop type of file

Answer 6

In my case the issue was that my csv was not named as per the string set within

@PostMapping("/upload")
    public ResponseEntity<ResponseMessage> uploadFile(@RequestParam("file") MultipartFile file) {

Answer 7

I suspect that main reason is @RequestParam("file") there should be @RequestBody instead.

Answer 8

Consider also the possibility of your request body not reaching your server if it's going through a proxy or any other intermediary that may not support multipart/form-data or even octet-stream content types. Hopefully, this can be solved with extra configuration to work this kind of requests. I can also recommend you to configure a request interceptor so you can log your request before and after your controller, this might help you getting a peek into the request parameters, payload and headers. In my case I realized that the size of my request body was 0, which help me to detect what was causing this error wasn't my spring configuration. Here I leave a useful resource to help you with the logging interceptor which Spring has out of the box. enter link description here

Answer 9

Really not sure what was going on but I removed the code

=======REMOVE BELOW========

@Bean
public MultipartConfigElement multipartConfigElement() {
    return new MultipartConfigElement("");
}

@Bean
public MultipartResolver multipartResolver() {

Added below:

spring.servlet.multipart.max-file-size=-1 
spring.servlet.multipart.max-request-size=-1

And, it starting working magically. Maybe thats how it was with my spring version

Answer 10

In my case the name attribute of the input type file was not set as "file" .

<input type="file" class="file-input" id="fileUpload" name="file">

Answer 11

In my case solution was missing '@EnableWebMvc' annotation on configuration

@EnableWebMvc
@Configuration
internal class BulkOffersUploadConfig {

    @Bean
    fun multipartResolver(): MultipartResolver {
        val multipartResolver = CommonsMultipartResolver()
        multipartResolver.setMaxUploadSize(1000)
        multipartResolver.setMaxUploadSizePerFile(1000)
        return multipartResolver
    }
}

Answer 12

Example of a multipart/form-data JMeter POST: HTTP Header Manager: Accept / Content-Type multipart/form-data; boundary=------------------------jm888 Expect 100-continue User-Agent jmeter/3.3 HTTP Request: uncheck the following: Redirect Automatically Follow Redirects User KeepAlive Use multipart/form-data for POST Browser-compatible headers Select Body Data tab sample of Body Data: ------------------------jm888 Content-Disposition: form-data; name="microsvc" Content-Type: application/json

{ "orgId": 1, "ResourceId": "0032ade8-cd59-45b6-8fff-299a63442474", "StatusId": "00d8ff46-c688-47cb-85a2-8edfaa1db9a2", "TypeId": "a972697e-735e-11e7-8cf7-a6006ad3dba0", "Id": "2a1773fe-dbb8-4510-b051-32b2ad823ea1" } ------------------------jm888 Content-Disposition: form-data; name="payload"; filename="1349.xml" Content-Type: application/xml

${__FileToString(C:\jmeterData\sourceData\1349.xml,,)} ------------------------jm888--