java POST 415 (Unsupported Media Type)

Question

I am trying to get the values of a field from a jsp to a spring mvc controller. The values from the jsp are not in a form, so I can't use HttpServletRequest to get the values directly. So I get the values in js using document.getElementById('fieldName').value, create an object, strigify it and send it to the controller using AJAX. However, I am getting a 415 (Unsupported Media Type) error. Below is my js code and controller code:

function getInput(){
    var ageMin=document.getElementById('age_min').value;
    var ageMax=document.getElementById('age_max').value;
    var creditMin=document.getElementById('credit_min').value;
    var obj = {"ageMin":ageMin,"ageMax":ageMax, "creditMin":creditMin};
    console.log(obj);
    var sobj=JSON.stringify(obj);
    console.log(sobj);
    $.ajax({
        url: "http://localhost:8080/login/validate.mvc",
        type: 'POST',
        data: sobj,  
        contentType: "application/json; charset=utf-8",
        success: function(results) {
        }
    });     
}


Controller:


    @RequestMapping(value = "/validate.mvc", method = RequestMethod.POST )
        public void getValidate(@RequestBody Object sobj){  

            System.out.println(sobj);
        }

Answer 1

只需指定数据类型属性即可解决您的问题

datatype : "json",