NSXMLParser 发现返回“\n”的字符人物
我有一个 xml 解析器，foundCharacters 回调方法返回如下字符串：
"\n "
"\n "
这是我正在解析的 XML 部分，但我在其中的任何位置都没有看到此字符串：
<GetChannelMessages xmlns="http://schemas.microsoft.com/ado/2007/08/dataservices">
<element p2:type="ToonInDevModel.GetChannelMessagesTest_Result" xmlns:p2="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata">
<messageid p2:type="Edm.Int32">15030</messageid>
<userid p2:type="Edm.Int32">1</userid>
<Handle xml:space="preserve">Henry </Handle>
<Distance p2:type="Edm.Double">16.845658889067568</Distance>
<MessageDateTime p2:type="Edm.DateTime">2011-07-18T03:14:43.17</MessageDateTime>
<Message>Posting this message again</Message>
</element>
<element p2:type="ToonInDevModel.GetChannelMessagesTest_Result" xmlns:p2="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata">
<messageid p2:type="Edm.Int32">15021</messageid>
<userid p2:type="Edm.Int32">1</userid>
<Handle xml:space="preserve">Henry </Handle>
<Distance p2:type="Edm.Double">16.845658889067568</Distance>
<MessageDateTime p2:type="Edm.DateTime">2011-07-18T01:45:17.097</MessageDateTime>
<Message>Posting this message again</Message>
</element>
<element p2:type="ToonInDevModel.GetChannelMessagesTest_Result" xmlns:p2="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata">
<messageid p2:type="Edm.Int32">15018</messageid>
<userid p2:type="Edm.Int32">1</userid>
<Handle xml:space="preserve">Henry </Handle>
<Distance p2:type="Edm.Double">16.845658889067568</Distance>
<MessageDateTime p2:type="Edm.DateTime">2011-07-18T01:33:18.1</MessageDateTime>
<Message>Posting this message again</Message>
</element>
此 XML 有问题吗？
I have an xml parser and the foundCharacters call back method is returning strings like this:
"\n "
"\n "
Here the part of the XML that I am parsing and I don't see this string anywhere in it:
<GetChannelMessages xmlns="http://schemas.microsoft.com/ado/2007/08/dataservices">
<element p2:type="ToonInDevModel.GetChannelMessagesTest_Result" xmlns:p2="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata">
<messageid p2:type="Edm.Int32">15030</messageid>
<userid p2:type="Edm.Int32">1</userid>
<Handle xml:space="preserve">Henry </Handle>
<Distance p2:type="Edm.Double">16.845658889067568</Distance>
<MessageDateTime p2:type="Edm.DateTime">2011-07-18T03:14:43.17</MessageDateTime>
<Message>Posting this message again</Message>
</element>
<element p2:type="ToonInDevModel.GetChannelMessagesTest_Result" xmlns:p2="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata">
<messageid p2:type="Edm.Int32">15021</messageid>
<userid p2:type="Edm.Int32">1</userid>
<Handle xml:space="preserve">Henry </Handle>
<Distance p2:type="Edm.Double">16.845658889067568</Distance>
<MessageDateTime p2:type="Edm.DateTime">2011-07-18T01:45:17.097</MessageDateTime>
<Message>Posting this message again</Message>
</element>
<element p2:type="ToonInDevModel.GetChannelMessagesTest_Result" xmlns:p2="http://schemas.microsoft.com/ado/2007/08/dataservices/metadata">
<messageid p2:type="Edm.Int32">15018</messageid>
<userid p2:type="Edm.Int32">1</userid>
<Handle xml:space="preserve">Henry </Handle>
<Distance p2:type="Edm.Double">16.845658889067568</Distance>
<MessageDateTime p2:type="Edm.DateTime">2011-07-18T01:33:18.1</MessageDateTime>
<Message>Posting this message again</Message>
</element>
Is there something wrong with this XML?
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评论（1）
这是正常的。
“\n”是换行符。 XML 解析器将告诉您它找到的所有 个字符，甚至元素本身之间的空格和行。
This is normal.
"\n" is a linebreak character. The XML parser will tell you about all characters it finds, even the spaces and lines between the elements themselves.