javascript – IE9拒绝处理XML响应
作者：互联网
这是与this one有关的问题.
在UPDATE II中,我根据Jamie的反馈添加了一个脚本.
更新 – tl;博士：
我用临时密钥创建了一个小提琴,这样你们就可以更容易地看到问题：http://jsfiddle.net/S6wEN/.
由于这个问题太长了,这是一个总结.
>我尝试使用imgur API通过跨域XHR更新图像.
>为了在实现中抽象细节,我使用的是Jquery Form Plugin(显然,它包含在小提琴中).
>在Chrome,Firefox等中运行良好,但它在IE9中不起作用.
>预期的结果是更新图像并检索图像类型.
您仍然可以在下面找到详细信息.
谢谢
我有这个HTML：
<body>
<form id="uploadForm" action="http://api.imgur.com/2/upload.xml" method="POST" enctype="multipart/form-data">
<input type="hidden" name="key" value="MYKEY">
File: <input type="file" name="image">
Return Type: <select id="uploadResponseType" name="mimetype">
<option value="xml">xml</option>
</select>
<input type="submit" value="Submit 1" name="uploadSubmitter1">
</form>
<div id="uploadOutput"></div>
</body>
基本上,我有一个表单可以通过跨域XHR上传图像到imgur.为了管理讨厌的细节,我使用Jquery Form Plugin,效果很好.但是,当我尝试将图像发送到imgur并收到xml响应时,它在IE9中无法正常工作(我没有在IE8中测试过,但我不期待好消息).它在Chrome和Firefox中运行良好.这是javascript部分：
(function() {
$('#uploadForm').ajaxForm({
beforeSubmit: function(a,f,o) {
o.dataType = $('#uploadResponseType')[0].value;
$('#uploadOutput').html('Submitting...');
},
complete: function(data) {
var xmlDoc = $.parseXML( data.responseText ),
$xml = $( xmlDoc );
$('#uploadOutput').html($xml.find('type'));
}
});
})();
在IE9中,我收到以下错误：
SCRIPT5022: Invalid XML: null
jquery.min.js, line 2 character 10890
XML5619: Incorrect document syntax.
, line 1 character 1
我还使用了Jquery Form Plugin页面中给出的示例,该页面仅使用Javascript,但它没有帮助.显然,引用Jquery的第一个错误消失但我无法获得预期的结果(在这种情况下,div中的image / jpeg,id =“uploadOutput”).
当我在IE9中查看控制台时,我得到了这个：
URL Method Result Type Received Taken Initiator Wait Start Request Response Cache read Gap
http://api.imgur.com/2/upload.xml POST 200 application/xml 1.07 KB 7.89 s click 2808 93 5351 0 0 0
并作为身体反应：
<?xml version="1.0" encoding="utf-8"?>
<upload><image><name/><title/><caption/><hash>xMCdD</hash>
<deletehash>Nb7Pvf3zPNohmkQ</deletehash><datetime>2012-03-17 01:15:22</datetime>
<type>image/jpeg</type><animated>false</animated><width>1024</width
<height>768</height><size>208053</size><views>0</views><bandwidth>0</bandwidth></image
<links><original>http://i.imgur.com/xMCdD.jpg</original
<imgur_page>http://imgur.com/xMCdD</imgur_page>
<delete_page>http://imgur.com/delete/Nb7Pvf3zPNohmkQ</delete_page>
<small_square>http://i.imgur.com/xMCdDs.jpg</small_square>
<large_thumbnail>http://i.imgur.com/xMCdDl.jpg</large_thumbnail></links></upload>
这很好,但出于某种原因,我无法将这些信息处理到HTML页面.我验证了XML,只是为了确保不是问题.当然这是有效的.
那么,IE9有什么问题？
更新：
获取XML的另一种方法是在Chrome和Firefox中运行但不在IE9中运行：
(function() {
$('#uploadForm').ajaxForm({
dataType: "xml",
beforeSubmit: function(a,f,o) {
o.dataType = $('#uploadResponseType')[0].value;
$('#uploadOutput').html('Submitting...');
},
success: function(data) {
var $xml = $( data ),
element = $($xml).find('type').text();
alert(element);
}
});
})();
更新2：
<!DOCTYPE html>
<html>
<body>
<form id="uploadForm" action="http://api.imgur.com/2/upload.xml" method="POST" enctype="multipart/form-data">
<input type="hidden" name="key" value="00ced2f13cf6435ae8faec5d498cbbfe">
File: <input type="file" name="image">
Return Type: <select id="uploadResponseType" name="mimetype">
<option value="xml">xml</option>
</select>
<input type="submit" value="Submit 1" name="uploadSubmitter1">
</form>
<div id="uploadOutput"></div>
</body>
</html>
<script type="text/javascript" src="https://ajax.googleapis.com/ajax/libs/jquery/1.7.1/jquery.min.js"></script>
<script type="text/javascript" src="jquery.form.js"></script>
<script>
(function() {
var options = {
// target: '#output1', // target element(s) to be updated with server response
//beforeSubmit: showRequest, // pre-submit callback
success: afterSuccess, // post-submit callback
complete: afterCompletion,
// other available options:
//url: url // override for form's 'action' attribute
type: 'POST', // 'get' or 'post', override for form's 'method' attribute
dataType: 'xml' // 'xml', 'script', or 'json' (expected server response type)
//clearForm: true // clear all form fields after successful submit
//resetForm: true // reset the form after successful submit
// $.ajax options can be used here too, for example:
//timeout: 3000
};
function process_xml(xml) {
var type = $(xml).find('type').text() ;
return type;
// Find other elements and add them to your document
}
function afterSuccess(responseText, statusText, xhr, $form) {
// for normal html responses, the first argument to the success callback
// is the XMLHttpRequest object's responseText property
// if the ajaxForm method was passed an Options Object with the dataType
// property set to 'xml' then the first argument to the success callback
// is the XMLHttpRequest object's responseXML property
// if the ajaxForm method was passed an Options Object with the dataType
// property set to 'json' then the first argument to the success callback
// is the json data object returned by the server
var $xml = process_xml(responseText);
console.log('success: ' + $xml);
}
function afterCompletion(xhr,status){
if(status == 'parsererror'){
xmlDoc = null;
// Create the XML document from the responseText string
if(window.DOMParser) {
parser = new DOMParser();
xml = parser.parseFromString(xhr.responseText,"text/xml");
} else {
// Internet Explorer
xml = new ActiveXObject("Microsoft.XMLDOM");
xml.async = "false";
xml.loadXML(xhr.responseText);
}
}
console.log('complete: ' + process_xml(xhr.responseText));
}
$('#uploadForm').ajaxForm(options);
})();
</script>
提前致谢.
解决方法:
IE在接受XML和解析它时非常挑剔.尝试这样的事情：
function process_xml(xml) {
var type = $(xml).find('type').text() ;
$('#type').html(type) ;
// Find other elements and add them to your document
}
$(function() {
$('#uploadForm').ajaxForm({
dataType: "xml", // 'xml' passes it through the browser's xml parser
success: function(xml,status) {
// The SUCCESS EVENT means that the xml document
// came down from the server AND got parsed successfully
// using the browser's own xml parsing caps.
process_xml(xml);
// Everything goes wrong for Internet Explorer
// when the mime-type isn't explicitly text/xml.
// If you are missing the text/xml header
// apparently the xml parse fails,
// and in IE you don't get to execute this function AT ALL.
},
complete: function(xhr,status){
if(status == 'parsererror'){
xmlDoc = null;
// Create the XML document from the responseText string
if(window.DOMParser) {
parser = new DOMParser();
xml = parser.parseFromString(xhr.responseText,"text/xml");
} else {
// Internet Explorer
xml = new ActiveXObject("Microsoft.XMLDOM");
xml.async = "false";
xml.loadXML(xhr.responseText);
}
process_xml(xml);
}
},
error: function(xhr,status,error)
{
alert('ERROR: ' + status) ;
alert(xhr.responseText) ;
}
});
});
此外,在整个调试过程中使用alert()来提供有关始终传递的信息的反馈.
编辑
关键是确保您的XML文件“格式良好”,即它不能包含任何语法错误.您需要使用以下命令开始XML文件：
<?xml version="1.0"?>
这不是服务器问题,因为错误来自您的浏览器(即Internet Explorer),因为它认为XML格式错误.该错误来自您的浏览器,表明您的XML格式错误.您可以使用这些$.ajax()设置手动设置要返回的标头：
dataType: ($.browser.msie) ? "text" : "xml",
accepts: {
xml: "text/xml",
text: "text/xml"
}
或者另一种做同样事情的方法是要求特定标题：
headers: {Accept: "text/xml"},
内容类型application / xml和text / xml之间的区别很小(它基于每个XML的字符集),但是如果你想知道你可以阅读this post.
标签：javascript,jquery,ajax,xml,internet-explorer-9 来源： https://codeday.me/bug/20190928/1829207.html