javascript - 如何获取 JSON POST 的结果

Question

我从表单页面发布这个 JSON

    <script src="http://ajax.googleapis.com/ajax/libs/dojo/1.7.1/dojo/dojo.js" type="text/javascript"></script>
    <script type="text/javascript">
        function poster()
        {
            var dataToPost = {grant_type: "password", username: dojo.byId("username").value, password: dojo.byId("password").value, redirect_uri: "http://localhost/default.html"};
            var xhrArgs =
            {
                url: "https://localhost/api/did/authenticate?client_id=12345",
                handleAs: 'json',
                postData: dojo.toJson(dataToPost),
                headers: { "Content-Type": "application/json; charset=UTF-8", "Accept" : "application/json" },
                load: function(data, args) 
                {
                    alert("Data = " + data);
                },
                error: function(error, args)
                {
                    alert("Error! " + error); 
                }
            }
            dojo.rawXhrPost(xhrArgs);
        }
    </script>

但我无法从上述 POST 中获取 JSON 结果。我怎样才能得到这些结果？请帮忙。我在load函数上得到的数据是null

Answer 1

https://localhost/api/did/authenticate 处的脚本需要print or echo or write 或以其他方式在退出时将 JSON 作为文本返回。