spring - @RequestBody MultiValueMap 不支持内容类型 'application/x-www-form-urlencoded;charset=UTF-8'

Question

基于答案 for problem with x-www-form-urlencoded with Spring @Controller

我写了下面的@Controller方法

@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");
            }
    }

请求失败并出现以下错误

{
  "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 友好得多，但考虑到这里的实际限制，现在无法使用它]

Answer 1

问题是当我们使用 application/x-www-form-urlencoded 时，Spring 并不将其理解为 RequestBody。所以，如果我们想使用这个我们必须删除 @RequestBody 注释。

然后尝试以下操作:

@RequestMapping(
  path = "/{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 && 
      paramMap.get("password") == null) {
     throw new IllegalArgumentException("Password not provided");
  }
  return null;
}

注意去掉了注释@RequestBody

回答:Http Post request with content type application/x-www-form-urlencoded not working in Spring