iron-ajax不支持content-type =＆＃39; application / json＆＃39;用于POST请求

Question

我正在尝试使用iron-ajax但内容类型=＆＃39; application / json＆＃39;不支持。

dt[, `:=`(count2012 = sum(year == 2012), count2013 = sum(year == 2013)), .(account)][]

#   account year count2012 count2013
#1:  treu65 2012         1         1
#2:  treu65 2013         1         1
#3:  treg23 2013         1         2
#4:  treg23 2013         1         2
#5:  treg23 2012         1         2

财产 -

<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>

计算功能 -

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

这不起作用，404 Bad request。我需要将JSON对象发送到我的服务器。

错误讯息 -

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

Answer 1

制作requestOtpBody =＆gt; type: Object，并跳过JSON.stringify步骤。

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