Xml

XML 文件：
<?xml version="1.0" encoding="utf-8"?>
<!DOCTYPE persons SYSTEM "persons.dtd">
<persons>
       <person>
          <pid>1</pid>
          <pname>张三</pname>
          <page>10</page>
       <person>
       <person>
          <pid>1</pid>
          <pname>张三</pname>
          <page>10</page>
       <person>
</persons>
 
DTD文件：
<!ELEMENT persons (person+)>
   <!ELEMENT person (pid,pname,page)>
   <!ELEMENT pid (#PCDATA)>
   <!ELEMENT pname (#PCDATA)>
   <!ELEMENT page (#PCDATA)>