org.springframework.web.HttpMediaTypeNotSupportedException: Content type 'application/json;charset=UTF-8' not supported

解决方法：添加

contentType : 'application/json',

$.ajax({
  type: "POST",
  url: "/xxx",
  dataType:'json',
 contentType : 'application/json',
  async : 'false',
  data:{"name":1,"value2":2},
  success:function (data) {    
  }
});