Xml

示例

<?xml version="1.0" encoding="utf-8"?>
<!-- some comment -->
<!DOCTYPE a [
<!ENTITY reg "&#174;">
<!ENTITY diams "&#9830;">
]>
<a>
        <name>abc</name>
        <age>&reg;</age>
        <grade>&diams;</grade>
		<script>
<![CDATA[
function matchwo(a,b)
{
if (a < b && a < 0) then
  {
  return 1;
  }
else
  {
  return 0;
  }
}
]]>
		</script>

</a>

解析 XML 的三种方式

• QXmlStreamReader
• DOM
• SAX

token 类型

tokenString: - StartDocument - EndElement - Characters - DTD - comment - Invalid

函数辨析

readNext: Reads the next token and returns its type. - StartDocument: - StartElement: - Characters: “\n “, 或者元素中的内容

readNextStartElement:

readElementText: Convenience function to be called in case a StartElement was read. Reads until the corresponding EndElement and returns all text in-between. 读取 value

• name 和 text 基本上互斥

name: Returns the local name of a StartElement, EndElement, or an EntityReference. text: Returns the text of Characters, Comment, DTD, or EntityReference. - “\n " - “some comment” for - “\n”

两个特殊的类型

EntityReference: < < &gt: > & & ' ' " "

DTD: