Spring中集合的注入方式

在前面所说的注入都是基本的简单类型，下面我们来讨论比较复杂的注入，对List,Set,Map,Properties的注入.
1 List
先看一下代码：

package com.jnotnull;
import java.util.List;

public class HelloWorld {
public List message = null;

public List getMessage() {
return message;
}

public void setMessage(List message) {
this.message = message;
}

}

配置文档：
config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans Public "-//SPRING//DTD BEAN//EN"
"http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id ="HelloWorld" class="com.jnotnull.HelloWorld">
<property name ="message">
  <list>
   <value>aaa</value>
   <value>bbb</value>
   <value>ccc</value>
  </list>
</property>
<bean>
</beans>


2 Set
先看一下代码：

package com.jnotnull;
import java.util.Set;

public class HelloWorld {
public Set message = null;

public Set getMessage() {
return message;
}

public void setMessage(Set message) {
this.message = message;
}

}

配置文档：
config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans Public "-//SPRING//DTD BEAN//EN"
"http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id ="HelloWorld" class="com.jnotnull.HelloWorld">
<property name ="message">
  <set>
   <value>aaa</value>
   <value>bbb</value>
   <value>ccc</value>
  </set>
</property>
<bean>
</beans>


3 Map
先看一下代码：

package com.jnotnull;
import java.util.Map;

public class HelloWorld {
public Map message = null;

public Map getMessage() {
return message;
}

public void setMessage(Map message) {
this.message = message;
}

}

配置文档：
config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans Public "-//SPRING//DTD BEAN//EN"
"http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id ="HelloWorld" class="com.jnotnull.HelloWorld">
<property name ="message">
  <map>
   <entry key="111">
     <value>aaa</value>
   </entry>
   <entry key="222">
   <value>bbb</value>
   </entry>
   <entry key="333">
   <value>ccc</value>
   </entry>
  </map>
</property>
<bean>
</beans>


4 Properties
先看一下代码：

package com.jnotnull;
import java.util.Map;

public class HelloWorld {
public Properties message = null;

public Properties getMessage() {
return message;
}

public void setMessage(Properties message) {
this.message = message;
}

}

配置文档：
config.xml

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE beans Public "-//SPRING//DTD BEAN//EN"
"http://www.springframework.org/dtd/spring-beans.dtd">
<beans>
<bean id ="HelloWorld" class="com.jnotnull.HelloWorld">
<property name ="message">
  <props>
   <prop key="111">aaa</prop>
   <prop key="222">bbb</prop>
   <prop key="333">ccc</prop>
  </props>
</property>
<bean>
</beans>

看，同样很简单；