The request was rejected because no multipart boundary was found in springboot

Question

As I am trying this with spring boot and webservices with postman chrome add-ons   In postman content-type  multipart form-data  and I am getting the below exception   HTTP Status 500 - Request processing failed   nested exception is org springframework web multipart MultipartException  Could not parse multipart servlet request   nested exception is java io IOException   org apache tomcat util http fileupload FileUploadException  the request was rejected because no multipart boundary was found   In Controller I specified the below code   ResponseBody  RequestMapping value     file   headers    Content-Type  multipart form-data   method   RequestMethod POST   public String upload  RequestParam  name   String name           RequestParam value    file   required   true  MultipartFile file     RequestParam   CommonsMultipartFile   fileUpload           RequestMapping value   newDocument     method   RequestMethod POST      if   file isEmpty              try               byte   fileContent   file getBytes                fileSystemHandler create 123  fileContent  name               return  You successfully uploaded     name                  catch  Exception e                return  You failed to upload     name       gt      e getMessage                    else           return  You failed to upload     name     because the file was empty              Here I specify the file handler code  public String create int jonId  byte   fileContent  String name        String status    Created file          try           String path   env getProperty  file uploadPath     name          File newFile   new File path           newFile createNewFile            BufferedOutputStream stream   new BufferedOutputStream new FileOutputStream newFile            stream write fileContent           stream close          catch  IOException ex            status    Failed to create file              Logger getLogger FileSystemHandler class getName    log Level SEVERE  null  ex             return status

User · Answer

I was having the same problem while making a POST request from Postman and later I could solve the problem by setting a custom Content-Type with a boundary value set along with it like this.

I thought people can run into similar problem and hence, I'm sharing my solution.

User · Answer

I met this problem because I use request js which writen base on axios And I already set a defaults headers in request js  import axios from  axios  const request   axios create     baseURL         timeout  15000     service defaults headers post  Content-Type      application x-www-form-urlencoded    here is how I solve this instead of   request post   manage product upload do         param config         I use axios directly send request and didn t add config  axios post   manage product upload do         param         hope this can solve your problem

User · Answer

Newer versions of ARC Advaced Rest client  also provides file upload option

User · Answer

The  Postman - REST Client  is not suitable for doing post action with setting content-type You can try to use  Advanced REST client  or others   Additionally  headers was replace by consumes and produces since Spring 3 1 M2  see https   spring io blog 2011 06 13 spring-3-1-m2-spring-mvc-enhancements  And you can directly use produces   MediaType MULTIPART FORM DATA VALUE

User · Answer

When I use postman to send a file which is 5 6M to an external network   I faced the same issue  The same action is succeeded on my own computer and local testing environment   After checking all the server configs and HTTP headers  I found that the reason is Postman may have some trouble simulating requests to external HTTP requests  Finally  I did the sendfile request on the chrome HTML page successfully  Just as a reference

User · Answer

This worked for me  Uploading a file via Postman  to a SpringMVC backend webapp   Backend    Postman

User · Answer

The problem is that you are setting the Content-Type by yourself  let it be blank  Google Chrome will do it for you  The multipart Content-Type needs to know the file boundary  and when you remove the Content-Type  Postman will do it automagically for you

User · Answer

Unchecked the content type in Postman and postman automatically detect the content type based on your input in the run time

User · Answer

Heard you can do this in postman

[java] The request was rejected because no multipart boundary was found in springboot

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