使用Ruby XML Parser解析XML

Question

I am having trouble parsing some returned XML using this command: XML::Parser.string(xml_string).parse

Here is the XML I am trying to parse:

<div style=\"border:1px solid #990000;padding-left:20px;margin:0 0 10px 0;\">
<h4>A PHP Error was encountered</h4>
<p>Severity: Notice</p>
<p>Message:  Undefined index:  HTTP_USER_AGENT</p>
<p>Filename: test</p>
<p>Line Number: test</p>
</div><?xml version=\"1.0\" encoding=\"UTF-8\"?>
<response>
    <review>
        <reviewer><![CDATA[test]]></reviewer>
        <ip><![CDATA[test]]></ip>
        rating><![CDATA[test]]></rating>
        <content><![CDATA[test.]]></content>
        <date><![CDATA[test]]></date>
    </review>
</response>

I get this error:

Fatal error: XML declaration allowed only at the start of the document at :10.Fatal error: Extra content at the end of the document at :11.
LibXML::XML::Error: Fatal error: Extra content at the end of the document

What is going on here?

Answer 1

Your string is not a valid XML document; it appears to be two documents concatenated together. (The first one is a " <div> " the second one is a " <response> ".)

Try separating them into two strings and parsing each of them separately.

Answer 2

When you are fetching xml_string , I believe you need to set the user agent. You are not providing a user agent so the server serving the XML is choking.

Use this code to add a user agent to your request:

resp = http.post(path, query, {'User-Agent' => "Ruby"})