iron-ajax 不支持 content-type='application/json' for POST 请求



我正在尝试使用iron-ajax,但是content-type ='application/json'不支持。

<iron-ajax id="ajaxRequestOtp"
                               method="POST"
                               url="[[apiEndPoint]]/user-sms-auth"
                               body="{{requestOtpBody}}"
                               handle-as="json"
                               headers='{"Accept": "application/json"}'
                               on-response="_responseRequestOtp"
                               on-error="_errorResponseRequestOtp"
                               content-type='application/json'>
                    </iron-ajax>

属性 -

static get properties() {
            return {
                apiEndPoint: {
                    type: String,
                    value: 'http://example.com'
                },
                requestOtpBody: {
                    type: String,
                    computed: '_createRequestOtpBody(mobileNumber)',
                    notify: true
                }
            };
        }

计算功能 -

_createRequestOtpBody(mobileNumber) {
            let body = {
                phone_number: "+91" + mobileNumber
            }
            return JSON.stringify(body);
        }

这不起作用,404不良要求。我需要将JSON对象发送到我的服务器。

错误消息 -

OPTIONS http://example.com/user-sms-auth 404 (Not Found)
(index):1 Failed to load http://example.com/user-sms-auth: Response for preflight has invalid HTTP status code 404

制作requestOtpBody => type: Object,然后跳过JSON.stringify步骤。

_createRequestOtpBody(mobileNumber) {
    return { phone_number: "+91" + mobileNumber };
}

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