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(6) Spring 如何装配 集合类 以及 【第二种 依赖注入 方式】使用 构造器 注入

2012-06-09 22:19 986 查看
package cn.itm.service.impl;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Properties;
import java.util.Set;

import cn.itm.service.PersonService;

public class PersonServiceBean implements PersonService{

	private Set<String> sets = new HashSet<String>();
	
	private List<String> lists = new ArrayList<String>();

	private Properties properties = new Properties();

	private Map<String, String> maps = new HashMap<String, String>();
	
	

	public Map<String, String> getMaps() {
		return maps;
	}

	public void setMaps(Map<String, String> maps) {
		this.maps = maps;
	}

	public Properties getProperties() {
		return properties;
	}

	public void setProperties(Properties properties) {
		this.properties = properties;
	}

	public List<String> getLists() {
		return lists;
	}

	public void setLists(List<String> lists) {
		this.lists = lists;
	}
	
	public Set<String> getSets() {
		return sets;
	}

	public void setSets(Set<String> sets) {
		this.sets = sets;
	}
	
	

	
}


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

public interface PersonService {

	public Set<String> getSets();
	
	public List<String> getLists();
	
	public Properties getProperties();
	
	public Map<String, String> getMaps() ;
	
	

}


配置 Spring容器:

<?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-2.5.xsd">            
           <bean id="personService" class="cn.itm.service.impl.PersonServiceBean">
           
           		<property name="sets">
           				<set>
           					<value>第一个</value>
           					<value>第二个</value>
           					<value>第三个</value>
           				</set>
           		</property>
           		
           		<property name="lists">
           				<list>
           					<value>第一个list</value>
           					<value>第二个list</value>
           					<value>第三个list</value>
           				</list>
           		</property>
           		
           		<property name="properties">
           				<props>
           						<prop key="key1">value1</prop>
           						<prop key="key2">value2</prop>
           						<prop key="key3">value3</prop>
           				</props>
           		</property>
           		
           		<property name="maps">
           				<map>
           					<entry key="key1" value="value1"/>
           					<entry key="key2" value="value2"/>
           					<entry key="key3" value="value3"/>
           				</map>
           		</property>
           		
           		
           </bean>
   
</beans>


测试类:


package junit.test;

import org.junit.BeforeClass;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import cn.itm.service.PersonService;

public class SpringTest {

	@BeforeClass
	public static void setUpBeforeClass() throws Exception {
	}

	// 专门用来实例化  Spring 容器的。
	@Test public void instanceSpring(){
		
		ApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");
		PersonService personService = (PersonService) ctx.getBean("personService");
		

		
		for(String value: personService.getSets()){
			System.out.println(value);
		}
		System.out.println("-------------------------------");
		for(String value: personService.getLists()){
			System.out.println(value);
		}
		System.out.println("-------------Properties()------------------");
		for(Object key: personService.getProperties().keySet()){
			System.out.println(key + "=" + personService.getProperties().getProperty((String)key));
		}
		
		System.out.println("-------------map------------------");
		for(Object key: personService.getMaps().keySet()){
			System.out.println(key + "=" + personService.getMaps().get(key));
		}
	}
}


二:使用 使用构造器注入

package cn.itm.service.impl;

import cn.itm.dao.PersonDao;
import cn.itm.service.PersonService;

public class PersonServiceBean implements PersonService{

	private PersonDao personDao;
	private String name;
	
	public PersonServiceBean(PersonDao personDao, String name) {
		this.personDao = personDao;
		this.name = name;
	}

	public PersonDao getPersonDao() {
			return personDao;
	}

	public void setPersonDao(PersonDao personDao) {
		this.personDao = personDao;
	}

	public String getName() {
		return name;
	}

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

public void save(){
	personDao.add();
	System.out.println(name);
}
	
}




package cn.itm.service;

public interface PersonService {

	public void save();
}


package cn.itm.dao.impl;

import cn.itm.dao.PersonDao;

public class PersonDaoBean implements PersonDao {

	
	public void add(){
		System.out.println("执行PersonDaoBean的add方法。。。");
	}
}


package cn.itm.dao;

public interface PersonDao {

	public abstract void add();

}


配置文件:

<?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-2.5.xsd">            
           <bean id="personDao" class="cn.itm.dao.impl.PersonDaoBean"></bean>
           <bean id="personService" class="cn.itm.service.impl.PersonServiceBean">
           
           		<constructor-arg index="0" type="cn.itm.dao.PersonDao" ref="personDao"/>
           		<constructor-arg index="1" value="大家好。"></constructor-arg>
           </bean>
   
</beans>


测试类:


package junit.test;

import org.junit.BeforeClass;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import cn.itm.service.PersonService;

public class SpringTest {

	@BeforeClass
	public static void setUpBeforeClass() throws Exception {
	}

	// 专门用来实例化  Spring 容器的。
	@Test public void instanceSpring(){
		
		ApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");
		PersonService personService = (PersonService) ctx.getBean("personService");
		personService.save();
	}
}


打印结果:

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