【php基础】XML，DTD实例

浏览数：18 / 时间：2015年06月09日

要求一：能看懂别人写的DTD文件，自己能写更好。例如products.dtd：

 1 <!ENTITY AUTHOR "John Doe">
 2 <!ENTITY COMPANY "JD Power Tools, Inc.">
 3 <!ENTITY EMAIL "[email protected]">
 4 
 5 <!ELEMENT CATALOG (PRODUCT+)>
 6 
 7 <!ELEMENT PRODUCT
 8 (SPECIFICATIONS+,OPTIONS?,PRICE+,NOTES?)>
 9 <!ATTLIST PRODUCT
10 NAME CDATA #IMPLIED
11 CATEGORY (HandTool|Table|Shop-Professional) "HandTool"
12 PARTNUM CDATA #IMPLIED
13 PLANT (Pittsburgh|Milwaukee|Chicago) "Chicago"
14 INVENTORY (InStock|Backordered|Discontinued) "InStock">
15 
16 <!ELEMENT SPECIFICATIONS (#PCDATA)>
17 <!ATTLIST SPECIFICATIONS
18 WEIGHT CDATA #IMPLIED
19 POWER CDATA #IMPLIED>
20 
21 <!ELEMENT OPTIONS (#PCDATA)>
22 <!ATTLIST OPTIONS
23 FINISH (Metal|Polished|Matte) "Matte" 
24 ADAPTER (Included|Optional|NotApplicable) "Included"
25 CASE (HardShell|Soft|NotApplicable) "HardShell">
26 
27 <!ELEMENT PRICE (#PCDATA)>
28 <!ATTLIST PRICE
29 MSRP CDATA #IMPLIED
30 WHOLESALE CDATA #IMPLIED
31 STREET CDATA #IMPLIED
32 SHIPPING CDATA #IMPLIED>
33 
34 <!ELEMENT NOTES (#PCDATA)>

要求二：能根据别人写的DTD文件来写符合标准的xml文件,products.xml

1 <?xml version="1.0" encoding="utf-8"?>
2 <!DOCTYPE CATALOG SYSTEM "products.dtd">
3 <CATALOG>
4 <PRODUCT NAME="冰箱" CATEGORY="HandTool" PLANT="Chicago" INVENTORY="Discontinued">
5 <SPECIFICATIONS WEIGHT="80kg" POWER="1000w">这是国产海尔冰箱</SPECIFICATIONS>
6 <PRICE>1000</PRICE>
7 <NOTES>轻拿轻放</NOTES>
8 </PRODUCT>
9 </CATALOG>

要求三：可以检验自己写的xml文件是否有误, checkdtd.html

 1 <html>
 2 <head>
 3 <title>测试dtd</title>
 4 <meta http-equiv="content-type" content="text/html;charset=utf-8"/>
 5 <script language="javascript">
 6 <!--
 7     //创建一个xml解析器
 8     var xmldoc = new ActiveXObject("Microsoft.XMLDOM");
 9     //开启校验功能
10     xmldoc.validateOnParse =true;
11     //指定对哪个 xml文件校验
12     xmldoc.load("products.xml");
13     //如果有错误信息，则输出
14     document.write("错误信息="+xmldoc.parseError.reason+"<br/>");  
15     document.write("错误的行号="+xmldoc.parseError.line+"<br/>");
16 
17 //-->
18 </script>
19 </head>
20 </html>