form表单ajax提交json数据

前端页面:

ajax请求发送数据

 $("#saveUserInfo").click(function() {
        var formObject = {};
        var formArray =$("#userInfo").serializeArray();
        $.each(formArray,function(i,item){
            formObject[item.name] = item.value;
        });
        $.ajax({
            url:"user/addUser",
            type:"post",
            contentType: "application/json; charset=utf-8",
            data: JSON.stringify(formObject),
            dataType: "json",
            success:function(data){
                alert(data.msg);
            },
            error:function(e){
                alert("错误!!");
            }
        });
    });

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