public class UserDaoImpl implements UserDao {
  private String company;
      private int age;
      public void setCompany(String company) {
          this.company = company;
      }
      public void setAge(int age) {
          this.age = age;
      }
      public void save() {
          System.out.println(company+"==="+age);
          System.out.println("UserDao save method running....");   
      }
  }

  <bean id="userDao" class="com.xiaozhi.dao.impl.UserDaoImpl">
      <property name="company" value="TANGZHI"></property>
      <property name="age" value="15"></property>
  </bean>

  //(1).集合数据类型(List<String>)的注入
  public class UserDaoImpl implements UserDao {
    private List<String> strList;
    public void setStrList(List<String> strList) {
      this.strList = strList;
    }
    public void save() {
          System.out.println(strList);
          System.out.println("UserDao save method running....");
    }
  }
  <bean id="userDao" class="com.xiaozhi.dao.impl.UserDaoImpl">
      <property name="strList">
          <list>
              <value>aaa</value>
              <value>bbb</value>
              <value>ccc</value>
          </list>
      </property>
  </bean>

  //(2). 集合数据类型(List<User>)的注入
  public class UserDaoImpl implements UserDao {
    private List<User> userList;
    public void setUserList(List<User> userList) {
    this.userList = userList;  
   }
  public void save() {
    System.out.println(userList);
    System.out.println("UserDao save method running....");
    }
  }
  <bean id="u1" class="com.xiaozhi.domain.User"/>
  <bean id="u2" class="com.xiaozhi.domain.User"/>
  <bean id="userDao" class="com.xiaozhi.dao.impl.UserDaoImpl">
      <property name="userList">
          <list>
              <bean class="com.xiaozhi.domain.User"/>
              <bean class="com.xiaozhi.domain.User"/>
              <ref bean="u1"/>
              <ref bean="u2"/>       
          </list>
      </property>
  </bean>

  //(3). 集合数据类型( Map<String,User> )的注入
  public class UserDaoImpl implements UserDao {
      private Map<String,User> userMap;
      public void setUserMap(Map<String, User> userMap) {
      this.userMap = userMap;
      }    
  public void save() {      
    System.out.println(userMap);
    System.out.println("UserDao save method running....");
    }
  }
  <bean id="u1" class="com.xiaozhi.domain.User"/>
  <bean id="u2" class="com.xiaozhi.domain.User"/>
  <bean id="userDao" class="com.xiaozhi.dao.impl.UserDaoImpl">
      <property name="userMap">
          <map>            
              <entry key="user1" value-ref="u1"/>
              <entry key="user2" value-ref="u2"/>
          </map>
      </property>
  </bean>

  //(4). 集合数据类型(Properties)的注入
  public class UserDaoImpl implements UserDao {
      private Properties properties;
      public void setProperties(Properties properties) {
          this.properties = properties;
      }
    public void save() {
      System.out.println(properties);
      System.out.println("UserDao save method running....");
    }
  }
  <bean id="userDao" class="com.xiaozhi.dao.impl.UserDaoImpl">
      <property name="properties">
          <props>
              <prop key="p1">aaa</prop>
              <prop key="p2">bbb</prop> 
              <prop key="p3">ccc</prop>
          </props>
      </property>
  </bean>