java url转json字符串 json转url参数

//json转为url参数
function shiftUrl(jsons){
        let url = "";
        for (let i in jsons){
            if(url === ""){
                url += "?" + i + "=" + jsons[i]
            }else{
                url += "&" + i + "=" + jsons[i]
            }
        }
        return url;
    }