Spring实战——xml 配置bean 和property属性

谁借莪１个温暖的怀抱￠ 2021-09-28 07:32 776阅读 0赞

\* 使用xml配置文件  
 \* 首先把xml配置文件放在classpath位置 main/resources 下，不能是java源文件位置下（似乎不起作用）  
 \* 然后在CDPlayerConfig 类添加标注@ImportResource("classpath:JavaConfig1.xml")

CD抽象类及实现类BlankDisc

public interface CD {
        void play();
    }

public class BlankDisc implements CD {
        private String title;
        private String artist;
        private List<String> tracks;
    
        public void setTitle(String title) {
            this.title = title;
        }
    
        public void setArtist(String artist) {
            this.artist = artist;
        }
    
        public void setTracks(List<String> tracks) {
            this.tracks = tracks;
        }
    
        public void play() {
            System.out.println("playing " + title + " by " + artist);
            for(String track: tracks){
                System.out.println("-track:" + track);
            }
        }
    }

配置类

@Configuration//作为配置文件之一
    @ImportResource("classpath:JavaConfig1.xml")
    public class CDPlayerConfig {
    
    }

xml文件，setter方法配置bean

<?xml version="1.0" encoding="UTF-8"?>
    <beans xmlns="http://www.springframework.org/schema/beans"
           xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:c="http://www.springframework.org/schema/c"
           xmlns:p="http://www.springframework.org/schema/p" xmlns:util="http://www.springframework.org/schema/util"
           xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/util http://www.springframework.org/schema/util/spring-util.xsd">
    
        <util:list id="tracksList">
            <value>1</value>
            <value>2</value>
            <value>3</value>
        </util:list>
    
        
        <bean id="blankCD" class="com.qhf.soundsystem05.BlankDisc" p:artist="qhf">
            <property name="title" value="qhfcd"></property>
            <property name="tracks">
                <list>
                    <value>1</value>
                    <value>2</value>
                    <value>3</value>
                </list>
            </property>
    
        </bean>
    
    </beans>

测试：

/**
     * 使用xml配置文件
     * 首先把xml配置文件放在classpath位置，不能是java源文件位置下
     * 然后在CDPlayerConfig 类添加标注@ImportResource("classpath:JavaConfig1.xml")
     *
     */
    @RunWith(SpringJUnit4ClassRunner.class)
    @ContextConfiguration(classes=CDPlayerConfig.class)
    public class CDPlayerTest {
    
        @Autowired
        private BlankDisc blankDisc;
    
        @Test
        public void cdShouldNotBeNull(){
            assertNotNull(blankDisc);
            blankDisc.play();
        }
    }

结果：

playing qhfcd by qhf  
\-track:1  
\-track:2  
\-track:3