[英]Polymer iron-ajax response code
我的API调用使用的是Polymer 1.6和<iron-ajax>
。 我无法基于iron-ajax-error
事件来区分这两种情况:
403 Forbidden
) 404 Not Found
) 在这两种情况下, 即使在身份验证问题中,服务器使用JSON主体进行响应,响应主体都是空的。
我想阅读响应状态代码,或者能够获得情况1的响应正文。
当服务器响应错误时,根据规范 ,响应正文应为null
。 但是, <iron-ajax>
的事件详细信息仍提供对状态代码和状态文本的访问。
<iron-ajax>.response
事件 <iron-ajax>.response
事件的事件详细信息是<iron-request>
。 状态代码存储在<iron-request>.status
,相应的文本存储在<iron-request>.statusText
:
_onResponse: function(e) {
const req = e.detail; // iron-request
console.log('status', req.status, req.statusText);
}
HTMLImports.whenReady(() => { Polymer({ is: 'x-foo', _onResponse: function(e) { const req = e.detail; console.log('response', req.status, req.statusText); this.responseStatus = req.status; this.responseStatusText = req.statusText; }, _onError: function(e) { const req = e.detail.request; const err = e.detail.error; console.log('error', err, req.status, req.statusText); this.errorStatus = req.status; this.errorStatusText = req.statusText; this.errorMessage = err; } }); });
<head> <base href="https://polygit.org/polymer+1.11.1/components/"> <script src="webcomponentsjs/webcomponents-lite.js"></script> <link rel="import" href="polymer/polymer.html"> <link rel="import" href="iron-ajax/iron-ajax.html"> </head> <body> <x-foo></x-foo> <dom-module id="x-foo"> <template> <iron-ajax url="//httpbin.org/status/200" auto on-response="_onResponse" on-error="_onError"></iron-ajax> <div>'on-response' status: [[responseStatus]] ([[responseStatusText]])</div> </template> </dom-module> </body>
<iron-ajax>.error
事件 请注意<iron-ajax>.error
事件的详细信息与<iron-ajax>.response
的详细信息不同。 error
的事件详细信息是具有以下形状的对象:
{
error: String,
request: iron-request
}
因此, <iron-ajax>.error
事件处理程序可以按以下方式读取状态和状态文本:
_onError: function(e) {
const req = e.detail.request; // iron-request
console.log('status', req.status, req.statusText);
}
HTMLImports.whenReady(() => { Polymer({ is: 'x-foo', _onResponse: function(e) { const req = e.detail; console.log('response', req.status, req.statusText); this.responseStatus = req.status; this.responseStatusText = req.statusText; }, _onError: function(e) { const req = e.detail.request; const err = e.detail.error; console.log('error', err, req.status, req.statusText); this.errorStatus = req.status; this.errorStatusText = req.statusText; this.errorMessage = err; } }); });
<head> <base href="https://polygit.org/polymer+1.11.1/components/"> <script src="webcomponentsjs/webcomponents-lite.js"></script> <link rel="import" href="polymer/polymer.html"> <link rel="import" href="iron-ajax/iron-ajax.html"> </head> <body> <x-foo></x-foo> <dom-module id="x-foo"> <template> <iron-ajax url="//httpbin.org/status/404" auto on-response="_onResponse" on-error="_onError"></iron-ajax> <div>'on-error' status: [[errorStatus]] ([[errorStatusText]]) - [[errorMessage]]</div> </template> </dom-module> </body>
当我想查看错误情况的响应时,我向error
事件注册了一个处理函数,并查找e.detail.response
或e.detail.request.xhr.response
,如下所示:
<dom-module id="my-login">
<template>
<iron-ajax url="http://some-url.com"
method="POST"
content-type="application/x-www-form-urlencoded"
body="{{reqBody}}"
handle-as="json"
on-response="onResponse"
on-error="onError" id="xhr"></iron-ajax>
</template>
<script>
Polymer({
is: 'my-component',
properties: {
reqBody: {
type: Object,
value: {}
}
},
onResponse: function(e) {
console.log(e.detail.response);
},
onError: function(e) {
// I think one of those two would be what you're looking for.
console.log(e.detail.response);
console.log(e.detail.request.xhr.response);
}
});
</script>
</dom-module>
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