Spring-IoC-DI-基于xml的依赖注入-使用set方法进行注入（案例六：注入Map集合属性）

案例六：注入Map集合属性

（1）创建类，定义属性和对应的set方法

public class Student {
    private String name;
    private Map<String,String> map;
    public Student() {
    }

    public Student(String name, Map<String, String> map) {
        this.name = name;
        this.map = map;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Map<String, String> getMap() {
        return map;
    }

    public void setMap(Map<String, String> map) {
        this.map = map;
    }

    @Override
    public String toString() {
        return "Student{" +
                "name='" + name + '\'' +
                ", map=" + map +
                '}';
    }
}

（2）在spring配置文件中先配置对象创建，再配置属性注入

<bean id="student" class="com.orz.spring.bean.Student">
        <property name="name" value="李华"/>
        <property name="map">
            <map>
                <entry key="key1" value="数据库原理"/>
                <entry key="key2" value="java编程"/>
            </map>
       </property>
</bean>

（3）测试

@Test
public void test1()
{
      ApplicationContext applicationContext=new ClassPathXmlApplicationContext("bean.xml");
        Student student = applicationContext.getBean("student", Student.class);
      System.out.println(student);
}

（4）结果

Student{name='李华', map={key1=数据库原理, key2=java编程}}