schema.xml

<?xml version="1.0" encoding="UTF-8" ?>
<!--
	1.填写xml文档的根元素
	2.引入xsi前缀.  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
	3.引入xsd文件命名空间.  xsi:schemaLocation="http://www.w3.org/2001/XMLSchema/xml  schema.xsd"
	4.为每一个xsd约束声明一个前缀,作为标识  xmlns="http://www.w3.org/2001/XMLSchema/xml"
 -->
<students xmlns="http://www.w3.org/2001/XMLSchema/xml"
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://www.w3.org/2001/XMLSchema/xml schema.xsd"
          >
    <student number="cpu_01">
        <name>cpu_code</name>
        <age>33</age>
        <sex>男</sex>
    </student>

    <student number="cpu_02">
        <name>code</name>
        <age>27</age>
        <sex>女</sex>
    </student>
</students>