On the way learning spring

Spring 5 - "HelloWorld"

1.Bulid the maven project-->check the Create a simple project

   Set Group Id:  com.caveofprogramming.spring.test

         Artifact Id: spring-tutorial5-->finish project Buliding

2.Right click project --> create a Java Class

   Set Source floder: spring-tutorial5/src/main/java

         Package: com.caveofprogramming.spring.test

         Name: App

3.In the package you created before, create another Java Class "Person"

4.Open pom.xml file, use tags below to download .jar files you need, for example

 <dependencies>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>3.2.3.RELEASE</version>
</dependency>

<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>3.2.3.RELEASE</version>
</dependency>

</dependencies>

5. Right click project--> Create a Spring Bean Configuration file"beans.xml"

6. Create new Bean "Person" in "beans.xml"(Use interface). The source code is

<bean id="person"
class="com.caveofprogramming.spring.test.Person">
</bean>

 

 

Spring 6 - ClassPathContexts (spring-tutorial5)

package com.caveofprogramming.spring.test;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

public class App {
public static void main(String[] args){

//Create spring beans container
ApplicationContext context = new ClassPathXmlApplicationContext("src/main/java/com/caveofprogramming/spring/test/beans/beans.xml");

ApplicationContext context = new  ClassPathXmlApplicationContext("com/caveofprogramming/spring/test/beans/beans.xml");

Person person = (Person)context.getBean("person");
person.speak();
((ClassPathXmlApplicationContext)context).close();
}

}

 

Green Url is the right one. (This is for ClassPathXmlApplicationContext. There are difference between ClassPathXmlApplicationContext and FileSystemXmlApplicationContext)

 

 

Spring 7 -Constructor Argument (spring-tutorial5)

1. Create new package  com.caveofprogramming.spring.test.beans --> drug the "beans.xml" file into it.

2.Insert<constuctor-arg> element

   In the "beans.xml", right click "Person" bean-->choose Insert<constuctor-arg> element

   Then you can set attribute in it. The source code in it is:

<bean id="person"

class="com.caveofprogramming.spring.test.Person">
<constructor-arg value="777" name="id"></constructor-arg>
<constructor-arg value="Mary" name="name"></constructor-arg>
</bean>