使用Ajax POST JsonArray

Question

我有一个JSON数组，我试图使用Ajax发布到SENDGRID。使用Postman我能够发布没有问题但是当我在.js文件中发布数据时，我不断收到错误（错误请求=缺少参数）。

感谢任何帮助。

注意：这些值实际上是有效的。为了安全起见，我删除了识别信息。

CHROME PAYLOAD：

AJAX致电：

var mailUrl = "https://api.sendgrid.com/v3/mail/send";
var postdata = '{"personalizations": [{"to":[{"to email"}],"from": {"email":"from email"},"subject":"Hello, World!" , "content" : [{ "type":"text/plain" , "value":"TestMessage!" }]}]}'
$.ajax({
    type: 'POST',
    headers: {Authorization: "Bearer APIKEY"},
    url: mailUrl,
    contentType: "application/json",
    data: JSON.stringify(postdata),
    success: function (res) {
         alert('ok');
    },
    error: function (res) {
         alert('problems');
    }
});

Answer 1

The string stored in the variable is a valid JSON. Calling JSON.stringify() on a JSON will escape all the special characters like " and that escaped string will not be deserialized to the object you intended.

While a string is still a valid JSON according to some specifications, The specifications for application/json stated in RFC4627

An object structure is represented as a pair of curly brackets surrounding zero or more name/value pairs (or members).

make the returned string invalid for post.

Sending the string itself without serializing it again will likely work.

Answer 2

问题似乎在于json [{"to":[{"to email"}]的这一部分。您可以使用jsonlint来验证json。此外，JSON.stringify()方法将JavaScript值转换为JSON字符串。

但在你的情况下，postdata已经是一个字符串。