ajax访问后台代码，成功但是ajax走error：function

Question

后台代码

    /**
     *  账号是否存在
     * @param account
     * @return
     */
    @RequestMapping(value = "/validateAccountNonExistent.json", method = RequestMethod.GET)
    @ResponseBody
    public JsonData validateActNonExistent(@RequestParam String account){
        System.out.println(account+"============account");
        if(sysUserService.checkTelephoneExist(account, null)){
            System.out.println("true");
            return JsonData.success();
        }else if(sysUserService.checkEmailExist(account, null)){
            System.out.println("true");
            return JsonData.success();
        }else{
            System.out.println("false");
            return JsonData.fail("账号不存在");
        }
    }

后台拦截器拦截到的日志信息

================================================================================================
2019-03-14 11:26:11.162  INFO 15436 --- [nio-8081-exec-3] com.hdcs.interceptor.HttpInterceptor     : request start. servletPath:/sys/user/validateAccountNonExistent.json, methodType:GET
2019-03-14 11:26:11.162  INFO 15436 --- [nio-8081-exec-3] com.hdcs.interceptor.HttpInterceptor     : request start. url:/assets/sys/user/validateAccountNonExistent.json, params:{"account":["[e-mail]"],"_":["1552533963678"]}
servletPath==========/sys/user/validateAccountNonExistent.json
2019-03-14 11:26:11.162  INFO 15436 --- [nio-8081-exec-3] com.hdcs.interceptor.HttpInterceptor     : request completed. url:/assets/sys/user/validateAccountNonExistent.json, cost:0

js

callback: function (value, validator, $field) {
                            var bol = true;
                            $.ajax({
                                type: "get",
                                url: "/assets/sys/user/validateAccountNonExistent.json",
                                cache : false,
                                async : false,
                                data: {
                                    account:value
                                },
                                success: function(data) {
                                    console.log(data.ret);
                                    if(!data.ret){
                                        bol = false;
                                    }
                                },
                                error: function () {
                                    console.log("caocaocaocao");
                                    bol = false;
                                }
                            });
                            return bol;
                        }

说明：前台，浏览器F12 network中访问正确200，后台拦截器也拦截到了数据，但是后台没有进方法，连输出语句都没有输出，ajax会走error:function(){}。
但是只要把前后台代码中的访问路径中的validateAccountNonExistent改成validateTelephoneNonExistent就没有问题 =-= 。求解！！！！！
补充

{readyState: 4, getResponseHeader: ƒ, getAllResponseHeaders: ƒ, setRequestHeader: ƒ, overrideMimeType: ƒ, …}abort: ƒ (e)always: ƒ ()catch: ƒ (e)done: ƒ ()fail: ƒ ()getAllResponseHeaders: ƒ ()getResponseHeader: ƒ (e)overrideMimeType: ƒ (e)pipe: ƒ ()progress: ƒ ()promise: ƒ (e)readyState: 4responseText: ""setRequestHeader: ƒ (e,t)state: ƒ ()status: 200statusCode: ƒ (e)statusText: "parsererror"then: ƒ (t,r,i)__proto__: Object
VM513:170 parsererror
VM513:171 SyntaxError: Unexpected end of JSON input
    at parse (<anonymous>)
    at Ut (jquery.min.js:2)
    at k (jquery.min.js:2)
    at XMLHttpRequest.<anonymous> (jquery.min.js:2)
    at Object.send (jquery.min.js:2)
    at Function.ajax (jquery.min.js:2)
    at Object.callback (<anonymous>:153:31)
    at Object.call (bootstrapValidator.min.js:10)
    at Object.validate (bootstrapValidator.min.js:10)
    at b.validateField (bootstrapValidator.min.js:10)

Answer 1

忘设权限了，= -=