通过Setters方式对日期属性及日期格式进行IOC注入

技术  /  管理员 发布于 7年前   173

本实例中还涉及到Spring中采用多个配置文件,也涉及到对日期格式的注入-------更加灵活
Date属性类： DatePropertyInjection.java

复制代码 代码如下:

package com.zhmg.spring;
import java.util.Date;
public class DatePropertyInjection {
private Date date;
public Date getDate() {
return date;
}
public void setDate(Date date) {
this.date = date;
}
}

属性编辑器类：PropertyEditor.java

复制代码 代码如下:

package com.zhmg.spring;
import java.beans.PropertyEditorSupport;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
/**
* 自定义属性编辑器处理java.util.Date类型的属性
* @author Administrator
*
*/
public class PropertyEditor extends PropertyEditorSupport {
String format = "yyyy-MM-dd";
public void setFormat(String format) {
this.format = format;
}
@Override
public void setAsText(String arg0) throws IllegalArgumentException {
SimpleDateFormat dateFormat = new SimpleDateFormat(format);
try {
Date date = dateFormat.parse(arg0);
this.setValue(date);
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
}
}

applicationContextBeans.xml

复制代码 代码如下:

<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
<bean id="dateProperty" class="com.zhmg.spring.DatePropertyInjection">
<property name="date">
<value>2009-8-28</value>
</property>
</bean>
</beans>

applicationContextBeans.xml

复制代码 代码如下:

<?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:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.0.xsd
http://www.springframework.org/schema/aop http://www.springframework.org/schema/aop/spring-aop-2.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.0.xsd">
<!--
<bean id="dateProperty" class="com.zhmg.spring.DatePropertyInjection">
<property name="date">
<value>2009-8-28</value>
</property>
</bean>
-->
<bean id="editor" class="org.springframework.beans.factory.config.CustomEditorConfigurer">
<property name="customEditors">
<map>
<entry key="java.util.Date">
<bean class="com.zhmg.spring.PropertyEditor">
<!―对日期格式注入-->
<property name="format" value="yyyy-MM-dd"/>
</bean>
</entry>
</map>
</property>
</bean>
</beans>

测试单元：InjectionTest.java

复制代码 代码如下:

package com.zhmg.spring;
import junit.framework.TestCase;
import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;
public class InjectionTest extends TestCase {
BeanFactory factory;
protected void setUp() throws Exception {
//采用通配符的方式读取所有以applicationContext开头的配置文件
factory = new ClassPathXmlApplicationContext("applicationContext*.xml");
}
public void testInjection(){
DatePropertyInjection dateProp = (DatePropertyInjection)factory.getBean("dateProperty");
System.out.println("date=" + dateProp.getDate());
}
}