Spring再接触 集合注入

beans.xml

<?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 name="userDAO" class="com.bjsxt.dao.impl.UserDAOImpl">
      <property name="sets">
          <set>
              <value>1</value>
              <value>2</value>
          </set>
      </property>
      <property name="lists">
          <list>
              <value>1</value>
              <value>2</value>
              <value>3</value>
          </list>
      </property>
      <property name="maps">
          <map>
              <entry key="1" value="1"></entry>
              <entry key="2" value="2"></entry>
              <entry key="3" value="3"></entry>
              <entry key="4" value="4"></entry>
          </map>
      </property>
  </bean>

  <bean id="userService" class="com.bjsxt.service.UserService">
  <!--
      <property name="userDAO">
          <ref bean="userDAO"/>
      </property>
       -->
       <constructor-arg>
           <ref bean="userDAO"/>
       </constructor-arg>
  </bean>

</beans>

userDAOimpl

package com.bjsxt.dao.impl;

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

import com.bjsxt.dao.UserDAO;
import com.bjsxt.model.User;

public class UserDAOImpl implements UserDAO {
    /* (non-Javadoc)
     * @see com.bjsxt.dao.UserDAO#save(com.bjsxt.model.User)
     */
    private Set<String> sets;
    private List<String> lists;
    private Map<String , String> maps;

    public Set<String> getSets() {
        return sets;
    }

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

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

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

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

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

    public UserDAOImpl() {
    }

    public void save(User user) {
        System.out.println("user saved!");
    }

    @Override
    public String toString() {
        return "sets size:" + sets.size() + "| lists size:" + lists.size() + "| maps size:" + maps.size() ;
    }

}

Test

@Test
    public void testAdd() throws Exception {
        ApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");
        UserDAO u1 = (UserDAO)ctx.getBean("userDAO");
        System.out.println(u1);
    }

原文地址：https://www.cnblogs.com/frankzone/p/9613231.html