java.lang.IllegalArgumentException: "json" does not contain '/'

Question

When I try to send data to server by POST method, I got this error on the server side:

java.lang.IllegalArgumentException: "json" does not contain '/'.

First I thought that date format from jQuery UI DatePicker is wrong and I changed it to "yy-mm-dd", but unfortunately is still does not work. I am really confused, because I don't know where is '/' which makes me trouble. I would be very happy if anybody decides to help me - Thank you

This is error, $.ajax and mapping are also below:

java.lang.IllegalArgumentException: "json" does not contain '/'
at org.springframework.http.MediaType.parseMediaType(MediaType.java:648)
at org.springframework.web.servlet.mvc.condition.ConsumesRequestCondition$ConsumeMediaTypeExpression.matchMediaType(ConsumesRequestCondition.java:215)
at org.springframework.web.servlet.mvc.condition.AbstractMediaTypeExpression.match(AbstractMediaTypeExpression.java:63)
at org.springframework.web.servlet.mvc.condition.ConsumesRequestCondition.getMatchingCondition(ConsumesRequestCondition.java:165)
at org.springframework.web.servlet.mvc.method.RequestMappingInfo.getMatchingCondition(RequestMappingInfo.java:174)
at org.springframework.web.servlet.mvc.method.RequestMappingInfoHandlerMapping.getMatchingMapping(RequestMappingInfoHandlerMapping.java:64)
// snip

That is how I send data:

$.ajax({
       url: _getContextPath() + "/event/addEvent",
       method: "POST",
       contentType: "json",
       data: {
             "ownerId": $("#ownerIdHidden").val(),
             "title": $("#title").val(),
             "place": $("#place").val(),
             "startdate": $("#startDate").val(),
             "starthour": $("#startHour").val(),
             "duration": $("#duration").val(),
             "description": $("#eventDescription").val(),
             "invited": _getLoginsFromTable(invitedTable)
      }
  });

And here is how I try to map it in Spring MVC Cotroller:

@ResponseBody
@RequestMapping(value="event/addEvent", method=RequestMethod.POST,
        consumes="application/json")
public String addEvent(@RequestParam("ownerid") Long ownerid, @RequestParam("title") String title,
        @RequestParam("place") String place, @RequestParam("startdate") Date startDate,
        @RequestParam("starthour") Integer startHour, @RequestParam("duration") Integer duration, 
        @RequestParam("description") String description, @RequestParam("invited") String[] invitedLogins){
    Session session = NewHibernateUtil.getSessionFactory().getCurrentSession();
    try{
(....)

UPDATE: now this is the code:

$.ajax({
    url: _getContextPath() + "/event/addEvent",
    method: "POST",
    contentType: "application/json",
   data: {
        "ownerId": 3,
        "title": 3,
        "place": $("#place").val(),
        "startdate": (new Date($("#startDate").val())).getTime(),
        "starthour": $("#startHour").val(),
        "duration": $("#duration").val(),
        "description": $("#eventDescription").val()
  }
});

And mapping:

@ResponseBody
@RequestMapping(value="event/addEvent", method=RequestMethod.POST,
        consumes="application/json")
public String addEvent(@RequestParam("ownerid") Long ownerid, @RequestParam("title") String title,
        @RequestParam("place") String place, @RequestParam("startdate") Long startDateMilis,
        @RequestParam("starthour") Integer startHour, @RequestParam("duration") Integer duration, 
        @RequestParam("description") String description){
    Session session = NewHibernateUtil.getSessionFactory().getCurrentSession();
    try{

And now I got: POST http://localhost:8084/pracainz/event/addEvent 400 (Bad Request)

Community · Accepted Answer · 2021-10-07 11:39:35Z

1

The error message is pretty clear: MediaType.parseMediaType tries to parse the "json" String literal into a MediaType but throws an exception because it's not a valid media type name. The media type of JSON is application/json. Since all valid internet media types contain two parts separated by '/' all input without this character is guaranteed to be invalid.

This:

$.ajax({
       url: _getContextPath() + "/event/addEvent",
       method: "POST",
       contentType: "json",
       // ...

should be:

$.ajax({
       url: _getContextPath() + "/event/addEvent",
       method: "POST",
       contentType: "application/json",
       // ...

edited Oct 7, 2021 at 11:39

CommunityBot

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answered May 11, 2014 at 13:24

kryger

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2 Comments

Radek Anuszewski Over a year ago

thank you for help, I updated my post with your changes, but now I got: POST localhost:8084/pracainz/event/addEvent 400 (Bad Request), still something is wrong.

kryger Over a year ago

That's another question, isn't it?

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