DTD总结

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE pets SYSTEM "pets.dtd">
<pets>
	<pet>
		<dog>
			<health></health>
			<love></love>
			<decHealth></decHealth>
			<incLove></incLove>
		</dog>
		<penguin>
			<health></health>
			<love></love>
			<decHealth></decHealth>
			<incLove></incLove>
		</penguin>
	</pet>
</pets>

 

<?xml version="1.0" encoding="UTF-8"?>
	<!ELEMENT pets (pet)>
	<!ELEMENT pet (dog,penguin)>
	<!ELEMENT dog (health,love,decHealth,incLove)>
	<!ELEMENT penguin (health,love,decHealth,incLove)>
	<!ELEMENT health (#PCDATA)>
	<!ELEMENT love (#PCDATA)>
	<!ELEMENT decHealth (#PCDATA)>
	<!ELEMENT incLove (#PCDATA)>

 

  以上是外部DTD声明

 如果是内部,则应该为

<?xml version="1.0" encoding="UTF-8"?>
<!ELEMENT pets [
	<!ELEMENT pets (pet)>
	<!ELEMENT pet (dog,penguin)>
	<!ELEMENT dog (health,love,decHealth,incLove)>
	<!ELEMENT penguin (health,love,decHealth,incLove)>
	<!ELEMENT health (#PCDATA)>
	<!ELEMENT love (#PCDATA)>
	<!ELEMENT decHealth (#PCDATA)>
	<!ELEMENT incLove (#PCDATA)>
]>
<pets>
	<pet>
		<dog>
			<health></health>
			<love></love>
			<decHealth></decHealth>
			<incLove></incLove>
		</dog>
		<penguin>
			<health></health>
			<love></love>
			<decHealth></decHealth>
			<incLove></incLove>
		</penguin>
	</pet>
</pets>

 

*表示出现0到多次

?表示出现0到1次

#REQUIRED表示必须出现

节点:PCDATA

属性:CDATA

如果在项目中应用,则导入外部样式路径需要写项目路径加DTD名称

如 http://localhost:8080/Test/TestDTD.dtd