Spring 的IoC使用示例2

前面的示例1展示了怎样配置运行一个简单地Spring项目，下面再来继续实现在配置文件applicationContext.xml中给参数注入值。

1.程序结构图：(将程序所需要的Spring相关jar包拷贝到程序的 lib 目录下)。

2.程序Bean1的代码(Bean1.java)

package com.my_spring;

import java.util.Date;
import java.util.List;
import java.util.Map;
import java.util.Set;

public class Bean1 {
	
	//下面是多种类型数据的注入测试
	private int intValue;
	private String strValue;
	private String[] arrayValue;
	private List listValue;
	private Set setValue;
	private Map mapValue;
	private Date dateValue;
	
	public int getIntValue() {
		return intValue;
	}
	public void setIntValue(int intValue) {
		this.intValue = intValue;
	}
	public String getStrValue() {
		return strValue;
	}
	public void setStrValue(String strValue) {
		this.strValue = strValue;
	}
	public String[] getArrayValue() {
		return arrayValue;
	}
	public void setArrayValue(String[] arrayValue) {
		this.arrayValue = arrayValue;
	}
	public List getListValue() {
		return listValue;
	}
	public void setListValue(List listValue) {
		this.listValue = listValue;
	}
	public Set getSetValue() {
		return setValue;
	}
	public void setSetValue(Set setValue) {
		this.setValue = setValue;
	}
	public Map getMapValue() {
		return mapValue;
	}
	public void setMapValue(Map mapValue) {
		this.mapValue = mapValue;
	}
	public Date getDateValue() {
		return dateValue;
	}
	public void setDateValue(Date dateValue) {
		this.dateValue = dateValue;
	}
}

3.自定义Date的属性编辑器(UtilDatePropertyEditor.java)

package com.my_spring;

import java.beans.PropertyEditorSupport;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;

//java.util.Date属性编辑器
public class UtilDatePropertyEditor extends PropertyEditorSupport {
	
	private String format = "yyyy-mm-dd";
	
	@Override
	public void setAsText(String text) throws IllegalArgumentException {
		System.out.println("UtilDatePropertyEditor.setAsText() -- text = " + text);
		SimpleDateFormat sdf = new SimpleDateFormat(format);
		try {
			Date d = sdf.parse(text);
			this.setValue(d);
		} catch (ParseException e) {
			e.printStackTrace();
		}
	}
	
	public void setFormat(String format) {
		this.format = format;
	}
}

4.利用JUint来进行的测试类代码（InjectionTest.java）

package com.my_spring;

import org.springframework.beans.factory.BeanFactory;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import junit.framework.TestCase;

public class InjectionTest extends TestCase {

	BeanFactory factory;
	
	@Override
	protected void setUp() throws Exception {
		factory = new ClassPathXmlApplicationContext("applicationContext.xml");
	}
	
	public void testInjection() {
		Bean1 bean1 = (Bean1)factory.getBean("bean1");
		
		System.out.println("bean1.intValue=" + bean1.getIntValue());
		System.out.println("bean1.strValue=" + bean1.getStrValue());
		System.out.println("bean1.arrayValue=" + bean1.getArrayValue());
		System.out.println("bean1.listValue=" + bean1.getListValue());
		System.out.println("bean1.setValue=" + bean1.getSetValue());
		System.out.println("bean1.mapValue=" + bean1.getMapValue());
		System.out.println("bean1.dateValue=" + bean1.getDateValue());
	}
}

5.Bean的配置文件(applicationContext.xml)

<?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:p="http://www.springframework.org/schema/p"  
    xmlns:context="http://www.springframework.org/schema/context"  
    xmlns:aop="http://www.springframework.org/schema/aop"   
    xmlns:tx="http://www.springframework.org/schema/tx"  
    xmlns:dwr="http://www.directwebremoting.org/schema/spring-dwr"  
    xsi:schemaLocation="http://www.springframework.org/schema/beans   
    http://www.springframework.org/schema/beans/spring-beans-3.2.xsd  
    http://www.springframework.org/schema/context   
    http://www.springframework.org/schema/context/spring-context-3.2.xsd  
    http://www.springframework.org/schema/aop  
    http://www.springframework.org/schema/aop/spring-aop-3.2.xsd  
    http://www.springframework.org/schema/tx  
    http://www.springframework.org/schema/tx/spring-tx-3.2.xsd">
	
	<bean id="bean1" class="com.my_spring.Bean1">
		<!-- 下为设置注入的方法 -->
		<property name="intValue" value="123" />
		<!-- 也可以使用下面这种方式 -->
		<property name="strValue">
			<value>木星人你好！</value>
		</property>
		<property name="arrayValue">
			<list>
				<value>array1</value>
				<value>array2</value>
			</list>			
		</property>
		<property name="listValue">
			<list>
				<value>list1</value>
				<value>list2</value>
			</list>			
		</property>
		<property name="setValue">
			<set>
				<value>set1</value>
				<value>set2</value>
			</set>
		</property>
		<property name="mapValue">
			<map>
				<entry key="k1" value="v1" />
				<entry key="k2" value="v2" />
			</map>
		</property>	
		
		<!--将bean1中的Date赋值2014-05-07，spring会认为2014-05-07是String，无法转换成Date，会报错！-->
		<property name="dateValue">
			<value>2014-05-07</value>
		</property>	
	</bean>
	
	<!-- 于是定义属性编辑器 -->    
	<bean id="customEditorConfigurer" class="org.springframework.beans.factory.config.CustomEditorConfigurer">
		<property name="customEditors">
			<map>
				<entry key="java.util.Date">
					<bean class="com.my_spring.UtilDatePropertyEditor">
						<property name="format" value="yyyy-mm-dd" />
					</bean>
				</entry>
			</map>
		</property>
	</bean>	
</beans>

6.运行结果截图

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