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