NSXMLParser 错误，如何摆脱 XML 标签内的无效字符？

发布于 2024-10-30 18:24:08 字数 1266 浏览 1 评论 0原文

大家好，提前感谢您的帮助。

情况是这样的：我正在使用一个 Web 服务，该服务通过以下方式返回肥皂消息：

    <?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
 <soapenv:Body>
  <getMessagesResponse xmlns="urn:DefaultNamespace">
   <getMessagesReturn xmlns="">
    &lt;?xml version=&quot;1.0&quot; encoding=&quot;ISO-8859-1&quot; ?&gt;
&lt;contact&gt;
A message with escaped values like &amp; &lt; &gt;
&lt;/contact&gt;
</getMessagesReturn>
  </getMessagesResponse>
 </soapenv:Body>
</soapenv:Envelope>

我使用 NSUTF8StringEncoding 读取 getMessagesReturn 子项，它生成以下内容

<?xml version="1.0" encoding="ISO-8859-1">
        <contact>
        A message with escaped values like & < >
        </contact>;

： < >当然，NSXMLParser 会抛出错误，因为这些字符在 XML 标记内是无效的。

我的问题是，我怎样才能避免这种情况？在将信息传递给解析器之前，有没有办法只转义标签消息内容？

任何帮助将不胜感激。

编辑我使用：

[NSString stringWithCString:(char*)elementText encoding:NSUTF8StringEncoding];

原文

Hi everyone and thanks in advance for your help.

This is the situation:
I'm consuming a webservice that returns me a soap message in the following way:

    <?xml version="1.0" encoding="UTF-8"?>
<soapenv:Envelope xmlns:soapenv="http://schemas.xmlsoap.org/soap/envelope/" xmlns:xsd="http://www.w3.org/2001/XMLSchema" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance">
 <soapenv:Body>
  <getMessagesResponse xmlns="urn:DefaultNamespace">
   <getMessagesReturn xmlns="">
    <?xml version="1.0" encoding="ISO-8859-1" ?>
<contact>
A message with escaped values like & < >
</contact>
</getMessagesReturn>
  </getMessagesResponse>
 </soapenv:Body>
</soapenv:Envelope>

I use NSUTF8StringEncoding to read the getMessagesReturn child and it generates me the following:

<?xml version="1.0" encoding="ISO-8859-1">
        <contact>
        A message with escaped values like & < >
        </contact>;

My problem is that it also unescape the & < > inside the contact tag, and of course the NSXMLParser throws an error because these are invalid characters inside a XML tag.

My Question is, How can I avoid this? Is there a way to escape back only the tags message contents before passing the info to the Parser?

Any help would be greatly appreciated.

Edit I use:

[NSString stringWithCString:(char*)elementText encoding:NSUTF8StringEncoding];

分享到QQ

分享到微博

如果你对这篇内容有疑问，欢迎到本站社区发帖提问参与讨论，获取更多帮助，或者扫码二维码加入 Web 技术交流群。

发布评论

需要登录才能够评论，你可以免费注册一个本站的账号。

烟凡古楼 2024-11-06 18:24:08

您控制网络服务吗？传递 getMessageReturn 的正确方法是使用 CDATA。否则，正确的编码将是这样的（注意消息本身和额外的 &），

<getMessagesReturn xmlns="">
    <?xml version="1.0" encoding="ISO-8859-1" ?>
<contact>
A message with escaped values like &amp; &lt; &gt;
</contact>
</getMessagesReturn>

但 CDATA 更容易，这就是它的用途。如果没有别的办法，您可以在解析之前使用字符串替换来插入 CDATA。

Do you control the web service? The correct way to pass getMessageReturn is with a CDATA. Otherwise, the correct encoding would be like this (note the message itself and the extra &'s)

<getMessagesReturn xmlns="">
    <?xml version="1.0" encoding="ISO-8859-1" ?>
<contact>
A message with escaped values like &amp; &lt; &gt;
</contact>
</getMessagesReturn>

But CDATA is much easier, and this is what it's for. If nothing else, you can use string substitution to insert the CDATA before parsing.

回复收藏 0 原文

~没有更多了~