Spring表达式和自动装配

public class Message {
	private String name;
	private List<String> cities;   //城市 。List集合
	private Set<String> friend;   //Set集合
	private Map<Integer,String> bookes;  //Map集合
	private Properties properties;   //Properties集合
	private String[] names;

	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String[] getNames() {
		return names;
	}
	public void setNames(String[] names) {
		this.names = names;
	}
	public List<String> getCities() {
		return cities;
	}
	public void setCities(List<String> cities) {
		this.cities = cities;
	}
	public Set<String> getFriend() {
		return friend;
	}
	public void setFriend(Set<String> friend) {
		this.friend = friend;
	}
	public Map<Integer, String> getBookes() {
		return bookes;
	}
	public void setBookes(Map<Integer, String> bookes) {
		this.bookes = bookes;
	}
	public Properties getProperties() {
		return properties;
	}
	public void setProperties(Properties properties) {
		this.properties = properties;
	}
}

public class ValueBean {
	private String username;

	public String getUsername() {
		return username;
	}

	public void setUsername(String username) {
		this.username = username;
	}

}

<util:list id="cities">
	<value>徐州</value>
	<value>无锡</value>
	<value>常州</value>
</util:list>

<util:set id="friends">
	<value>Jack</value>
	<value>Tom</value>
	<value>陈加兵</value>
</util:set>


<util:map id="bookes">
	<entry key="1001" value="java编程基础"></entry>
	<entry key="1002" value="java编程思想"></entry>
</util:map>

<!-- 引入外部的Properties文件，location指定的就是位置 -->
<util:properties id="properties" location="classpath:jdbc.properties"></util:properties>

<bean id="message" class="cn.tedu.spring.beans.Message">
	<property name="name" value="陈加兵"></property>
	<!-- List集合的注入 ref指定的上面定义的List的id -->
	<property name="cities" ref="cities"></property>

	<!-- Set集合的注入 -->
	<property name="friend" ref="friends"></property>

	<!-- Map集合的注入 -->
	<property name="bookes" ref="bookes"></property>

	<!-- properties的集合的注入 -->
	<property name="properties" ref="properties"></property>

	<!-- 为数组赋值 -->
	<property name="names">
		<array>
			<value>Alex</value>
			<value>Billy</value>
		</array>
	</property>
</bean>

<!-- 配置ValueBean -->
<bean id="valueBean" class="cn.tedu.spring.beans.ValueBean">
	<!-- value的值是使用spring表达式获取的，形式为：#{前面定义好的id.属性名} -->
	<property name="username" value="#{message.name}"></property>
</bean>

<!-- 配置ValueBean -->
<bean id="valueBean" class="cn.tedu.spring.beans.ValueBean">
	<!-- value的值是使用spring表达式获取的，形式为：#{前面定义好的id.属性名} -->
	<property name="username" value="#{message.names[0]}"></property>
</bean>

<!-- 创建一个Address的实例 -->
	<bean id="address" class="cn.tedu.spring.beans.Address">
		<property name="city" value="无锡"></property>
		<property name="pro" value="江苏"></property>
	</bean>

	<bean id="person" class="cn.tedu.spring.beans.Person">
		<property name="name" value="陈加兵"></property>
		<property name="age" value="22"></property>
		<!-- 引用上面address -->
		<property name="address" ref="address"></property>
	</bean>

	<!-- 配置ValueBean -->
	<bean id="valueBean" class="cn.tedu.spring.beans.ValueBean">
		<!-- value的值是使用spring表达式获取的，形式为：#{前面定义好的id.属性名} -->
		<property name="username" value="#{person.address.city}"></property>
	</bean>

public class UserDao(){
	public void reg(){

}
}

public class UserService{
	private UserDao userDao;
	private void reg(){
		userDao.reg();
}
}

<bean id="userDao" class="cn.tedu.spring.UserDao"/>

<!--这里不需要配置property节点来ref上面定义的bean，只需要使用自动装配即可-->
<bean id="userService" class="cn.tedu.spring.UserService" autowire="byName">

Class Person(){
    @Value("陈加兵")  //直接为其赋值
    private String name;
}