Spring4 notes-three methods of injecting collaborator Bean using assembly, spring4bean

Spring4 notes-three methods of injecting collaborator Bean using assembly, spring4bean

 

An exception is thrown when the two names are the same:

Exception in thread "main" org.springframework.beans.factory.parsing.BeanDefinitionParsingException: Configuration problem: Bean name 'd' is already used in this <beans> elementOffending resource: class path resource [beans.xml]    at org.springframework.beans.factory.parsing.FailFastProblemReporter.error(FailFastProblemReporter.java:70)    at org.springframework.beans.factory.parsing.ReaderContext.error(ReaderContext.java:85)    at org.springframework.beans.factory.parsing.ReaderContext.error(ReaderContext.java:80)    at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.error(BeanDefinitionParserDelegate.java:301)    at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.checkNameUniqueness(BeanDefinitionParserDelegate.java:511)    at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseBeanDefinitionElement(BeanDefinitionParserDelegate.java:457)    at org.springframework.beans.factory.xml.BeanDefinitionParserDelegate.parseBeanDefinitionElement(BeanDefinitionParserDelegate.java:429)    at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.processBeanDefinition(DefaultBeanDefinitionDocumentReader.java:299)    at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseDefaultElement(DefaultBeanDefinitionDocumentReader.java:190)    at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.parseBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:169)    at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.doRegisterBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:142)    at org.springframework.beans.factory.xml.DefaultBeanDefinitionDocumentReader.registerBeanDefinitions(DefaultBeanDefinitionDocumentReader.java:94)    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.registerBeanDefinitions(XmlBeanDefinitionReader.java:508)    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.doLoadBeanDefinitions(XmlBeanDefinitionReader.java:392)    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:336)    at org.springframework.beans.factory.xml.XmlBeanDefinitionReader.loadBeanDefinitions(XmlBeanDefinitionReader.java:304)    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:181)    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:217)    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:188)    at org.springframework.beans.factory.support.AbstractBeanDefinitionReader.loadBeanDefinitions(AbstractBeanDefinitionReader.java:252)    at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:127)    at org.springframework.context.support.AbstractXmlApplicationContext.loadBeanDefinitions(AbstractXmlApplicationContext.java:93)    at org.springframework.context.support.AbstractRefreshableApplicationContext.refreshBeanFactory(AbstractRefreshableApplicationContext.java:129)    at org.springframework.context.support.AbstractApplicationContext.obtainFreshBeanFactory(AbstractApplicationContext.java:612)    at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:513)    at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:139)    at org.springframework.context.support.ClassPathXmlApplicationContext.<init>(ClassPathXmlApplicationContext.java:83)    at com.ij34.bean.test.main(test.java:12)

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Interface

package com.ij34.interfaces;public interface dog { public String run();}

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package com.ij34.interfaces;public interface people {   public void test();}

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Object

Package com. ij34.servce; import com. ij34.interfaces. dog; public class Dog implements dog {private String name; public String getName () {return name;} public void setName (String name) {this. name = name ;}@ Overridepublic String run () {// TODO Auto-generated method stub return "I'm an Alaska Dog named:" + getName ();}}

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Package com. ij34.servce; import com. ij34.interfaces. dog; public class Dog2 implements dog {private String name; public String getName () {return name;} public void setName (String name) {this. name = name ;}@ Overridepublic String run () {// TODO Auto-generated method stub return "I'm a husky dog named: "+ getName ();}}

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Package com. ij34.servce; import com. ij34.interfaces. dog; import com. ij34.interfaces. people; public class People implements people {private dog d; public dog getD () {return d;} public void setD (dog d) {this. d = d ;}@ Override public void test () {// TODO Auto-generated method stub System. out. println ("I Am a programmer:" + getD (). run ());}}

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<? Xml version = "1.0" encoding = "GBK"?> <Beans xmlns: xsi = "http://www.w3.org/2001/XMLSchema-instance" xmlns = "http://www.springframework.org/schema/beans" xsi: schemaLocation = "http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.3.xsd"> <bean id = "chinese" class = "com. ij34.servce. people "autowire =" byName "/> <! -- Or byType --> <bean name = "d" class = "com. ij34.servce. dog "> <property name =" name "value =" cowboy 1 "> </property> </bean> <bean name =" d1 "class =" com. ij34.servce. dog2 "> <! -- Add multiple, and add the following content: autowire-candidate = "false" --> <property name = "name" value = "Daha 2 dog"> </property> </bean> </beans>

 

 

Run

package com.ij34.bean;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.ij34.servce.People;public class test {    public static void main(String[] args) {        // TODO Auto-generated method stub          @SuppressWarnings("resource")        ApplicationContext app=new ClassPathXmlApplicationContext("beans.xml");        People p=app.getBean("chinese", People.class);        p.test();    }}

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