spring集合注入案例 - JAVA

一个user类

package www.xxxx.spring.dao;

public class User {
private String name;
private Integer age;
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
public Integer getAge() {
return age;
}
public void setAge(Integer age) {
this.age = age;
}

}

CollectionBean类

package www.xxxx.spring.dao;

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

public class CollectionBean {
public Set sets;
//set集合依赖注入
public void setSets(Set sets) {
this.sets = sets;
}

public List users;
//list集合依赖注入
public void setUsers(List users) {
this.users = users;
}

public Properties props;

//Properties集合依赖注入

public void setProps(Properties props) {
this.props = props;
}

public Map map;
//Map集合依赖注入
public void setMap(Map map) {
this.map = map;
}

}

spring-CollectionBean.xml

< xml version="1.0" encoding="UTF-8" >
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.xsd">

张三
李四
王五
赵六
钱八

jdbc:oracle
jdbc:mysql
jdbc:access

测试类

package www.xxxx.spring.dao;

import java.util.Collection;
import java.util.Iterator;
import java.util.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Properties;
import java.util.Set;

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

public class TestBean {

@Test
public void testSets(){
ApplicationContext context=new ClassPathXmlApplicationContext("classpath:spring-CollectionBean.xml");
CollectionBean bean = context.getBean("collectionBean",CollectionBean.class);
//set集合
Set sets = bean.sets;
Iterator it = sets.iterator();
while(it.hasNext()){
System.out.println(it.next());
}

System.out.println("----------------------");

//list集合
List users = bean.users;
for(User user:users){
System.out.println(user.getName()+"sss"+user.getAge());
}
System.out.println("-----------------------");

//map集合
Map map =bean.map;
//得到map集合的key键值的set集合
Set setkeys= map.keySet();
//得到key键值set集合的迭代器
Iterator itkeys=setkeys.iterator();
while(itkeys.hasNext()){
//得到一个具体的键值
Integer key=itkeys.next();
//通过 map集合get方法获取key键值对应的value值
User user = map.get(key);
System.out.println(key+"dddddd"+user.getName()+"sss"+user.getAge());
}

System.out.println("sdfd-----------------");
//map集合2
//获取实体对象的set集合
Set> setentry = map.entrySet();
//获取实体对象的迭代器
Iterator> itentry = setentry.iterator();
while(itentry.hasNext()){
Entry entry = itentry.next();
//通过
System.out.println(entry.getKey()+"sssaaa"+entry.getValue().getName()+"sssdd"+entry.getValue().getAge());
}

System.out.println("=========================");

//Properties集合
Properties props= bean.props;
//得到这个结合键值的Key的set集合

Set setprops = props.stringPropertyNames();
//String 集合迭代
Iterator keystr = setprops.iterator();
while(keystr.hasNext()){
String key = keystr.next();
System.out.println(key+"ssssssssss"+props.getProperty(key));
}
}

}