jQuery ajax pass json array to the background

The front end code is as follows:

function ajaxClick() {
    var arr = []
    var jsont = {"name": "hejinghuan", "age": "23"};
    var jsont2 = {"name": "yongzheng", "age": "33"};
    var jsont3 = {"name": "huangdi", "age": "34"};
    arr.push(jsont);
    arr.push(jsont2);
    arr.push(jsont3);
    $.ajax({ // ajax login request
        url: "ajaxdemo/test",
        type:"POST",
        data:{params:JSON.stringify(arr)},
        async:false,
        success:function(data){
            alert(data);
        }
    });
}

Background code:
Here is the params, which is data:{params:JSON.stringify(arr)}. The key of the aqx passed in the parameter. After receiving it, convert the string to JSON with fastjson. Array.

@RestController
@RequestMapping("/ajaxdemo")
public class ajaxController {

    @RequestMapping("test")
    public String ajaxparam(@RequestParam String params) {
        JSONArray paradms = JSON.parseArray(params);
        for (int i = 0; i< paradms.size();i++) {
            JSONObject paramjson = (JSONObject) paradms.get(i);
            String name = paramjson.getString("name");
            System.out.println(name);
        }
        System.out.println(params);
        return params;
    }
}

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