测试

<?xml version="1.0" encoding="UTF-8" ?>
   <project name="xmlbean" default="build_all_schemas" basedir="." >
    <taskdef name="xmlbean" classname="org.apache.xmlbeans.impl.tool.XMLBean" />
    <target name="build_all_schemas" >
     <xmlbean schema="schemas"destfile="dist/Schemas.jar"
        classgendir="build"srcgendir="src" javasource="1.5" />
   </target>
</project>

<xs:schema
  xmlns:xs="http://www.w3.org/2001/XMLSchema"
  xmlns:po="http://openuri.org/easypo"
  targetNamespace="http://openuri.org/easypo"
  elementFormDefault="qualified" >

 <xs:element name="purchase-order" >
  <xs:complexType>
   <xs:sequence>
    <xs:element name="customer" type="po:customer" />
    <xs:element name="date" type="xs:dateTime" />
    <xs:element name="line-item" type="po:line-item" 
        minOccurs="0" maxOccurs="unbounded" />
    <xs:element name="shipper" type="po:shipper" 
        minOccurs="0" maxOccurs="1" />
   </xs:sequence>
  </xs:complexType>
 </xs:element>

 <xs:complexType name="customer" >
  <xs:sequence>
   <xs:element name="name" type="xs:string" />
   <xs:element name="address" type="xs:string" />
  </xs:sequence>
  <xs:attribute name="age" type="xs:int" />
  <xs:attribute name="moo" type="xs:int" default="100" />
  <xs:attribute name="poo" type="xs:int" fixed="200" />
 </xs:complexType>

 <xs:complexType name="line-item" >
  <xs:sequence>
   <xs:element name="description" type="xs:string" />
   <xs:element name="per-unit-ounces" type="xs:decimal" />
   <xs:element name="price" type="xs:decimal" />
   <xs:element name="quantity" type="xs:integer" />
  </xs:sequence>
 </xs:complexType>

 <xs:complexType name="shipper" >
  <xs:sequence>
   <xs:element name="name" type="xs:string" />
   <xs:element name="per-ounce-rate" type="xs:decimal" />
  </xs:sequence>
 </xs:complexType>

</xs:schema>