beh*_*ani 1 javascript polymer
我正在使用Polymer 1.6和<iron-ajax>我的API调用.我根据iron-ajax-error事件无法区分这两种情况:
403 Forbidden)404 Not Found)在这两种情况下,响应正文都是空的,即使在身份验证问题中,服务器也会使用JSON正文进行响应.
我想阅读响应状态代码,或者能够获得情况1中的响应主体.
当服务器以错误响应,响应体被认为是null根据规范.但是,<iron-ajax>事件详细信息仍然可以访问状态代码和状态文本.
<iron-ajax>.response 事件活动的详细信息<iron-ajax>.response是<iron-request>.状态代码存储在<iron-request>.status,相应的文本位于<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事件的详细信息与详细信息不同<iron-ajax>.response.所述error的事件细节是具有以下形状的物体:
{
error: String,
request: iron-request
}
因此,<iron-ajax>.error事件处理程序可以读取状态和状态文本,如下所示:
_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>
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