ajax传递json格式数据参数

[--Locked]

var obj = {
"userID":"123",
"pageNo":1,
"pageSize":20
};
$.ajax({
type: "POST",
url: "http://192.168.6.99:8081/collection/list",
data: JSON.stringify(obj),
dataType: "jsonp",
success: function(res){
var data = res.data;
console.log(res);
}
});


后台报错：
net.sf.json.JSONException: A JSONObject text must begin with '{' at character
0 of

不知道问题在哪儿，找大神帮忙

[逝_去_的_光_阴]

var obj =' { "userID":"123", "pageNo":1, "pageSize":20 }'; {}外加上单引号

[--Locked]

引用

var obj =' { "userID":"123", "pageNo":1, "pageSize":20 }'; {}外加上单引号

问题解决了，跨域的问题