这是与此问题相关的问题。
在更新 II中,我根据Jamie的反馈添加了一个脚本。
更新 - tl;dr:
我创建了一个带有临时密钥的fiddle,以便您可以更轻松地查看问题:http://jsfiddle.net/S6wEN/。
由于这个问题变得太长了,这是一个总结。
- 我试图使用imgur API通过跨域XHR更新图像。
- 为了在实现中抽象细节,我使用了Jquery表单插件(显然,它包含在小提琴里)。
- 在Chrome、Firefox等浏览器中运行良好,但在IE9中不起作用。
- 预期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
我有以下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,我有一个表单通过跨域XHR上传图像到imgur。为了管理复杂的细节,我使用Jquery Form Plugin,这个插件工作得很好。然而,当我尝试发送图像到imgur并接收xml响应时,在IE9中它并不如预期地工作(我还没有在IE8中测试,但我不指望会有好消息)。在Chrome和Firefox中它运行得很好。以下是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,我遇到了以下错误:
SCRIPT5022: Invalid XML: null
jquery.min.js, line 2 character 10890
XML5619: Incorrect document syntax.
, line 1 character 1
我还尝试了 Jquery Form 插件页面提供的示例,它只使用了Javascript,但并没有起到帮助作用。显然,第一个涉及Jquery的错误消失了,但我无法获得期望的结果(在这种情况下,是位于id为 "uploadOutput" 的div中的image/jpeg
)。
当我查看IE9中的控制台时,得到了以下信息:
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
并作为响应主体:
<?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>
一切都很顺利,但出于某种原因,我无法将该信息处理到HTML页面中。为了确保问题不是出在XML上,我进行了验证。当然,它是有效的。
那么,IE9有什么问题呢?
更新:
另一种获取XML的方法在Chrome和Firefox中可行,但在IE9中不可行:
(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>
提前感谢。