Spring MVC中传递json数据时显示415错误解决方法

在ajax中设置 ContentType为'application/json;charset=utf-8'

传递的data类型必须是json字符串类型：{“key”:"value"};

并且一定要指定 produces = "application/json"

@RequestMapping(value="/register_cammmend",method = RequestMethod.POST,produces = "application/json")

@ResponseBody

public String addUser(@RequestBody User users){

}