Spring与Castor示例
借助
CastorMarshaller 类,我们可以使用Castor将Java对象编组为xml,反之亦然。它是Marshaller和Unmarshaller接口的实现类。默认情况下,不需要任何其他配置。
Spring和Castor集成的示例(将Java对象编组为XML)
您需要创建以下文件使用带有Castor的Spring将Java对象编组为XML:
Employee.java
applicationContext.xml
mapping.xml
Client.java
必需的Jar文件
要运行此示例,您需要加载:
Spring Core jar文件
Spring Web jar文件
castor-1.3.jar
castor-1.3-core.jar
下载spring的所有jar文件,包括core,web,aop,mvc,j2ee,remoting ,oxm,jdbc,orm等。
下载castor-1.3.jar
下载castor -1.3-core.jar
Employee.java
如果使用设置器和获取器定义了三个属性id,名称和薪水。
package com.lidihuo;
public class Employee {
private int id;
private String name;
private float salary;
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public float getSalary() {
return salary;
}
public void setSalary(float salary) {
this.salary = salary;
}
}
applicationContext.xml
它定义了一个Bean castorMarshallerBean,其中Employee类与OXM框架绑定。
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.0.xsd">
<bean id="castorMarshallerBean" class="org.springframework.oxm.castor.CastorMarshaller">
<property name="targetClass" value="com.lidihuo.Employee"></property>
<property name="mappingLocation" value="mapping.xml"></property>
</bean>
</beans>
mapping.xml
<?xml version="1.0"?>
<!DOCTYPE mapping public "-//EXOLAB/Castor Mapping DTD Version 1.0//EN"
"http://castor.org/mapping.dtd">
<mapping>
<class name="com.lidihuo.Employee" auto-complete="true" >
<map-to xml="Employee" ns-uri="http://www.lidihuo.com" ns-prefix="dp"/>
<field name="id" type="integer">
<bind-xml name="id" node="attribute"></bind-xml>
</field>
<field name="name">
<bind-xml name="name"></bind-xml>
</field>
<field name="salary">
<bind-xml name="salary" type="float"></bind-xml>
</field>
</class>
</mapping>
Client.java
它从applicationContext.xml文件获取Marshaller的实例并调用marshal方法。
package com.lidihuo;
import java.io.FileWriter;
import java.io.IOException;
import javax.xml.transform.stream.StreamResult;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.oxm.Marshaller;
public class Client{
public static void main(String[] args)throws IOException{
ApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
Marshaller marshaller = (Marshaller)context.getBean("castorMarshallerBean");
Employee employee=new Employee();
employee.setId(101);
employee.setName("Sonoo Jaiswal");
employee.setSalary(100000);
marshaller.marshal(employee, new StreamResult(new FileWriter("employee.xml")));
System.out.println("XML Created Sucessfully");
}
}
示例的输出
employee.xml
<?xml version="1.0" encoding="UTF-8"?>
<dp:Employee xmlns:dp="http://www.lidihuo.com" id="101">
<dp:name>Sonoo Jaiswal</dp:name>
<dp:salary>100000.0</dp:salary>
</dp:Employee>