spring 自定义schema

扩展schema,定义自己的bean属性。。不错！

主要：

1，定义META-INF下.xsd文件，这里是people.xsd;定义spring.handlers;定义spring.schemas

2,定义namaspace解析类,这里是StudentNamespaceHandler

3,定义beanDefinition，这里是StudentBeanDefinitionParser

4,当然还有相关的javabean定义，这里是Student.java

详细代码：

people.xsd

<?xml version="1.0" encoding="UTF-8"?>
<xsd:schema xmlns="http://www.luyee.com/bat/schema/people"
	xmlns:xsd="http://www.w3.org/2001/XMLSchema"
	xmlns:beans="http://www.springframework.org/schema/beans"
	targetNamespace="http://www.luyee.com/bat/schema/people"
	elementFormDefault="qualified"
	attributeFormDefault="unqualified">
    <xsd:import namespace="http://www.springframework.org/schema/beans" />

	<xsd:element name="student">
	 <xsd:complexType>
            <xsd:complexContent>
                <xsd:extension base="beans:identifiedType"> 

                   	<xsd:attribute name="name"
						type="xsd:string">
						<xsd:annotation>
							<xsd:documentation>
								姓名
							</xsd:documentation>
						</xsd:annotation>
					</xsd:attribute> 

                   	<xsd:attribute name="age"
						type="xsd:string">
						<xsd:annotation>
							<xsd:documentation>
								年龄
							</xsd:documentation>
						</xsd:annotation>
					</xsd:attribute>  

                </xsd:extension>
            </xsd:complexContent>
        </xsd:complexType>
    </xsd:element>
   </xsd:schema>

spring.handlers;

http\://www.luyee.com/bat/schema/people=com.luyee.bat.spring.StudentNamespaceHandler

spring.schemas

http\://www.luyee.com/bat/schema/people.xsd=META-INF/people.xsd

StudentNamespaceHandler和StudentBeanDefinitionParser

package com.luyee.bat.spring;

import java.text.SimpleDateFormat;

import org.springframework.beans.factory.support.BeanDefinitionBuilder;
import org.springframework.beans.factory.xml.AbstractSingleBeanDefinitionParser;
import org.springframework.beans.factory.xml.NamespaceHandlerSupport;
import org.springframework.util.StringUtils;
import org.w3c.dom.Element;

public class StudentNamespaceHandler  extends NamespaceHandlerSupport {

	public void init() {
		registerBeanDefinitionParser("student", new StudentBeanDefinitionParser());
	}

	class StudentBeanDefinitionParser extends AbstractSingleBeanDefinitionParser{
		 protected Class getBeanClass(Element element) {
		        return Student.class;
		    }  

		    protected void doParse(Element element, BeanDefinitionBuilder bean) {
		        String name = element.getAttribute("name");
		        bean.addPropertyValue("name", name);  

		        String age = element.getAttribute("age");
		        if (StringUtils.hasText(age)) {
		            bean.addPropertyValue("age", Integer.valueOf(age));
		        }
		    }
	}
}

JavaBean:Student

package com.luyee.bat.spring;

public class Student {

	private String name;

	private int age;

	public String getName() {
		return name;
	}

	public void setName(String name) {
		this.name = name;
	}

	public int getAge() {
		return age;
	}

	public void setAge(int age) {
		this.age = age;
	}

}

测试：applicationContex.xml（people:student就好比bean）

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:people="http://www.luyee.com/bat/schema/people"
    xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
    http://www.luyee.com/bat/schema/people http://www.luyee.com/bat/schema/people.xsd" >
    <people:student id="student1" name="student1"
        age="18" />  

    <people:student id="student2" name="student2"
        age="20" />  

</beans> 

StudentXsdTest.java

package com.luyee.bat.spring;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;  

public class StudentXsdTest {  

    public static void main(String[] args) {
        ApplicationContext ctx = new ClassPathXmlApplicationContext("applicationContext.xml");
        Student student1 = (Student) ctx.getBean("student1");
        Student student2 = (Student) ctx.getBean("student2");
        System.out.println("name: " +student1.getName()+" age :" + student1.getAge());
        System.out.println("name: " +student2.getName()+" age :" + student2.getAge());
    }
}

输出：

八月 13, 2013 8:50:50 下午 org.springframework.context.support.AbstractApplicationContext prepareRefresh
INFO: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@46f7ba12: startup date [Tue Aug 13 20:50:50 CST 2013]; root of context hierarchy
八月 13, 2013 8:50:50 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
INFO: Loading XML bean definitions from class path resource [applicationContext.xml]
八月 13, 2013 8:50:52 下午 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
INFO: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@25e9a396: defining beans [student1,student2]; root of factory hierarchy
name: student1 age :18
name: student2 age :20

最后贴个文件结构