@ JsonFormat is solvable and should be the problem with your code. You can also use controls to format the display of this field at the front end.

generally speaking, if the backend json passes the time, it is better to send you such a timestamp, and then change it from the previous paragraph to the time string you want to display.
there is a similar problem. You can take a look at . Why does the backend give the foreground Date a time stamp, while the foreground to the background is a time string directly?

if you are spring boot, please take a look at this example item: https://github.com/chanjarste.

I have met before, and I found the formatting time of the end js code on the Internet.

    //Date Date String  
    //(M)(d)(h)(m)(s)(q)  1-2    
    //(y) 1-4 (S) 1 ( 1-3 )   
    Date.prototype.Format = function (fmt) { 
        var o = {  
            "M+": this.getMonth() + 1, //   
            "d+": this.getDate(), //   
            "H+": this.getHours(), //   
            "m+": this.getMinutes(), //   
            "s+": this.getSeconds(), //   
            "q+": Math.floor((this.getMonth() + 3) / 3), //   
            "S": this.getMilliseconds() //   
        };  
        if (/(y+)/.test(fmt)) 
            fmt = fmt.replace(RegExp.$1, (this.getFullYear() + "").substr(4 - RegExp.$1.length));  
        for (var k in o)  
            if (new RegExp("(" + k + ")").test(fmt))
                fmt = fmt.replace(RegExp.$1, (RegExp.$1.length == 1) ? (o[k]) : (("00" + o[k]).substr(("" + o[k]).length)));  
        return fmt;  
    }