Content type application x-www-form-urlencoded charset UTF-8 not supported for RequestBody MultiValueMap

Question

Based on the answer for problem with x-www-form-urlencoded with Spring  Controller   I have written the below  Controller method   RequestMapping value      email  authenticate   method   RequestMethod POST               produces     application json    application xml                  consumes     application x-www-form-urlencoded              public          ResponseBody         Representation authenticate  PathVariable  email   String anEmailAddress                                       RequestBody MultiValueMap paramMap                  throws Exception                 if paramMap    null    paramMap get  password      null                    throw new IllegalArgumentException  Password not provided                          the request to which fails with the below error        timestamp   1447911866786     status   415     error    Unsupported Media Type      exception    org springframework web HttpMediaTypeNotSupportedException      message    Content type  application x-www-form-urlencoded charset UTF-8  not supported      path     users usermail 40gmail com authenticate       PS  Jersey was far more friendly  but couldn t use it now given the practical restrictions here

User · Answer

You can try to turn support on in spring s converter  EnableWebMvc  Configuration public class WebConfig implements WebMvcConfigurer         Override     public void extendMessageConverters List lt HttpMessageConverter lt   gt  gt  converters               add converter suport Content-Type   application x-www-form-urlencoded          converters stream                    filter AllEncompassingFormHttpMessageConverter class  isInstance                   map AllEncompassingFormHttpMessageConverter class  cast                   findFirst                    ifPresent converter - gt  converter addSupportedMediaTypes MediaType APPLICATION FORM URLENCODED VALUE

User · Answer

In Spring 5   PostMapping   some request path    public void someControllerMethod   RequestParam MultiValueMap body             import org springframework util MultiValueMap       String datax    String  body  getFirst  datax

User · Answer

RequestBody MultiValueMap paramMap in here Remove the  RequestBody Annotaion  RequestMapping value    quot  signin quot  method   RequestMethod POST  public String createAccount  RequestBody LogingData user       logingService save user       return  quot login quot          RequestMapping value    quot  signin quot  method   RequestMethod POST  public String createAccount  LogingData user       logingService save user       return  quot login quot       like that

User · Answer

It seems that now you can just mark the method parameter with  RequestParam and it will do the job for you    PostMapping   some request path    public void someControllerMethod   RequestParam Map lt String  String gt  body         work with Map

User · Answer

Simply removing  RequestBody annotation solves the problem  tested on Spring Boot 2     RestController public class MyController         PostMapping     public void method  Valid RequestDto dto              method body

User · Answer

The problem is that when we use application x-www-form-urlencoded  Spring doesn t understand it as a RequestBody  So  if we want to use this we must remove the  RequestBody annotation   Then try the following    RequestMapping value      email  authenticate   method   RequestMethod POST          consumes   MediaType APPLICATION FORM URLENCODED VALUE           produces    MediaType APPLICATION ATOM XML VALUE  MediaType APPLICATION JSON VALUE   public  ResponseBody  Representation authenticate  PathVariable  email   String anEmailAddress  MultiValueMap paramMap  throws Exception      if paramMap    null  amp  amp  paramMap get  password      null            throw new IllegalArgumentException  Password not provided              return null      Note that removed the annotation  RequestBody  answer  Http Post request with content type application x-www-form-urlencoded not working in Spring

User · Answer

PostMapping path    quot  my endpoint quot   consumes     MediaType APPLICATION FORM URLENCODED VALUE    public ResponseEntity lt Void gt  handleBrowserSubmissions MyDTO dto  throws Exception              That way works for me

User · Answer

I wrote about an alternative in this StackOverflow answer   There I wrote step by step  explaining with code  The short way   First  write an object  Second  create a converter to mapping the model extending the AbstractHttpMessageConverter  Third  tell to spring use this converter implementing a WebMvcConfigurer class overriding the configureMessageConverters method  Fourth and final  using this implementation setting in the mapping inside your controller the consumes   MediaType APPLICATION FORM URLENCODED VALUE and  RequestBody in front of your object   I m using spring boot 2

User · Answer

Add a header to your request to set content type to application json  curl -H  Content-Type  application json  -s -XPOST http   your domain com  -d YOUR JSON BODY   this way spring knows how to parse the content

[spring] Content type 'application/x-www-form-urlencoded;charset=UTF-8' not supported for @RequestBody MultiValueMap

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