Spring 依赖注入 DL
Spring 两种注入方式
- Setter 方法注入
- 构造器注入
使用
App.java
import com.mj.bean.*;
import com.mj.bean.annotation.BeanConfig;
import com.mj.bean.annotation.BeanPerson;
import com.mj.bean.annotation.IBean;
import com.mj.bean.dl.BeanHideHelper;
import com.mj.bean.dl.BeanShowHelper;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import org.springframework.context.support.FileSystemXmlApplicationContext;
import java.io.FileNotFoundException;
public class App {
public static void main(String args[]) throws FileNotFoundException{
/*
//ClassPathXmlApplicationContext
ApplicationContext context = new ClassPathXmlApplicationContext("com/mj/xml/Bean.xml");
BeanSay sa = (BeanSay) context.getBean("BeanSay");
sa.setMsg("__Spring");
sa.talk();
//FileSystemXmlApplicationContext
ApplicationContext fileContext = new FileSystemXmlApplicationContext("/src/com/mj/xml/Bean.xml");
BeanSay sa1 = (BeanSay) fileContext.getBean("BeanSay");
sa1.setMsg("=Spring====");
sa1.talk();
ApplicationContext animalContext = new ClassPathXmlApplicationContext("com/mj/xml/Bean.xml");
BeanAnimal ani = (BeanAnimal) animalContext.getBean("Animal");
ani.setAnimalName("dog");
ani.showAnimal();
BeanAnimal animal = (BeanAnimal) animalContext.getBean("Animal");
animal.setAnimalName("pig");
animal.showAnimal();
// init method destroy method
BeanLife life = (BeanLife) context.getBean("BeanLife");
life.showName();
//BeanDog 继承 BeanAnimal
BeanDog dog = (BeanDog)context.getBean("BeanDog");
dog.showAnimal();
//加载多配置文件
BeanUser user = (BeanUser)context.getBean("BeanUser");
user.showUser();
*/
/*
ApplicationContext annotationCtx = new AnnotationConfigApplicationContext(BeanConfig.class);
IBean beanPerson = (IBean) annotationCtx.getBean("beanPerson");
beanPerson.show();
IBean beanStu = (IBean)annotationCtx.getBean("beanStu");
beanStu.show();
IBean beanTch = (IBean)annotationCtx.getBean("beanTch");
beanTch.show();
*/
// Setter 注入
ApplicationContext context = new ClassPathXmlApplicationContext("com/mj/xml/BeanDL.xml");
BeanShowHelper hps = (BeanShowHelper) context.getBean("BeanShowHelper");
hps.show();
//构造函数注入
BeanHideHelper bhh = (BeanHideHelper) context.getBean("BeanHideHelper");
bhh.show();
}
}
IHelper.java
package com.mj.bean.dl;
public interface IHelper {
public void doc();
public void lang();
}
BeanHelperJava.java
package com.mj.bean.dl;
public class BeanShowHelper {
private IHelper helper;
public void setHelper(IHelper helper) {
this.helper = helper;
}
public void show(){
helper.doc();
helper.lang();
}
}
BeanHelperPython.java
package com.mj.bean.dl;
public class BeanHelperPython implements IHelper {
@Override
public void doc() {
System.out.println("doc=python");
}
@Override
public void lang() {
System.out.println("lang=python");
}
}
BeanShowHelper.java
package com.mj.bean.dl;
public class BeanShowHelper {
private IHelper helper;
public void setHelper(IHelper helper) {
this.helper = helper;
}
public void show(){
helper.doc();
helper.lang();
}
}
BeanHideHelper.java
package com.mj.bean.dl;
public class BeanHideHelper {
private IHelper helper;
public BeanHideHelper(IHelper helper){
this.helper = helper;
}
public void show(){
helper.doc();
helper.lang();
}
}
BeanDL.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-3.0.xsd">
<bean id = "BeanHelperJava" class = "com.mj.bean.dl.BeanHelperJava"> </bean>
<bean id = "BeanHelperPython" class = "com.mj.bean.dl.BeanHelperPython"> </bean>
<!-- Setter注入 -->
<bean id="BeanShowHelper" class="com.mj.bean.dl.BeanShowHelper" >
<property name="helper">
<ref bean="BeanHelperJava" ></ref>
</property>
</bean>
<!-- 构造函数注入 -->
<bean id="BeanHideHelper" class="com.mj.bean.dl.BeanHideHelper" >
<constructor-arg>
<bean class="com.mj.bean.dl.BeanHelperPython" ></bean>
</constructor-arg>
</bean>
</beans>
运行
/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/bin/java "-javaagent:/Applications/IntelliJ IDEA.app/Contents/lib/idea_rt.jar=51657:/Applications/IntelliJ IDEA.app/Contents/bin" -Dfile.encoding=UTF-8 -classpath /Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/charsets.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/deploy.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/ext/cldrdata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/ext/dnsns.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/ext/jaccess.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/ext/jfxrt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/ext/localedata.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/ext/nashorn.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/ext/sunec.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/ext/sunjce_provider.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/ext/sunpkcs11.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/ext/zipfs.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/javaws.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/jce.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/jfr.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/jfxswt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/jsse.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/management-agent.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/plugin.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/resources.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/rt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/lib/ant-javafx.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/lib/dt.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/lib/javafx-mx.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/lib/jconsole.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/lib/packager.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/lib/sa-jdi.jar:/Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/lib/tools.jar:/Users/mac/d/project/java/mspr/out/production/mspr:/Users/mac/d/project/java/mspr/lib/spring-instrument-4.3.18.RELEASE.jar:/Users/mac/d/project/java/mspr/lib/spring-instrument-tomcat-4.3.18.RELEASE.jar:/Users/mac/d/project/java/mspr/lib/spring-aspects-4.3.18.RELEASE.jar:/Users/mac/d/project/java/mspr/lib/spring-context-support-4.3.18.RELEASE.jar:/Users/mac/d/project/java/mspr/lib/spring-aop-4.3.18.RELEASE.jar:/Users/mac/d/project/java/mspr/lib/spring-jms-4.3.18.RELEASE.jar:/Users/mac/d/project/java/mspr/lib/spring-expression-4.3.18.RELEASE.jar:/Users/mac/d/project/java/mspr/lib/spring-jdbc-4.3.18.RELEASE.jar:/Users/mac/d/project/java/mspr/lib/spring-oxm-4.3.18.RELEASE.jar:/Users/mac/d/project/java/mspr/lib/commons-logging-1.2.jar:/Users/mac/d/project/java/mspr/lib/spring-messaging-4.3.18.RELEASE.jar:/Users/mac/d/project/java/mspr/lib/aopalliance-1.0.jar:/Users/mac/d/project/java/mspr/lib/spring-tx-4.3.18.RELEASE.jar:/Users/mac/d/project/java/mspr/lib/spring-beans-4.3.18.RELEASE.jar:/Users/mac/d/project/java/mspr/lib/spring-orm-4.3.18.RELEASE.jar:/Users/mac/d/project/java/mspr/lib/spring-context-4.3.18.RELEASE.jar:/Users/mac/d/project/java/mspr/lib/spring-core-4.3.18.RELEASE.jar:/Users/mac/d/project/java/mspr/lib/spring-test-4.3.18.RELEASE.jar App
objc[905]: Class JavaLaunchHelper is implemented in both /Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/bin/java (0x1003b54c0) and /Library/Java/JavaVirtualMachines/jdk1.8.0_144.jdk/Contents/Home/jre/lib/libinstrument.dylib (0x1023f54e0). One of the two will be used. Which one is undefined.
Dec 05, 2018 12:11:22 PM org.springframework.context.support.ClassPathXmlApplicationContext prepareRefresh
信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@67424e82: startup date [Wed Dec 05 12:11:22 CST 2018]; root of context hierarchy
Dec 05, 2018 12:11:22 PM org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
信息: Loading XML bean definitions from class path resource [com/mj/xml/BeanDL.xml]
=help java=
lang=java
doc=python
lang=python
Process finished with exit code 0
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