1.创建Maven项目,项目名称springdemo22,如图所示
![QQ截图20170323144055.png Spring4-@Configuration的使用_@Configuration](https://s2.51cto.com/wyfs02/M00/8F/18/wKiom1jTbijRxvUZAAAXoJ1Yn3I872.png?x-oss-process=image/resize,m_fixed,w_1184)
2.配置Maven,修改项目中的pom.xml文件,修改内容如下
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>1.0.0</modelVersion>
<groupId>shequ</groupId>
<artifactId>springdemo13</artifactId>
<version>0.0.1-SNAPSHOT</version>
<properties>
<java.version>1.7</java.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
</properties>
<repositories>
<repository>
<id>codelds</id>
<url>https://code.lds.org/nexus/content/groups/main-repo</url>
</repository>
</repositories>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.10</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>4.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>4.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>4.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.34</version>
</dependency>
</dependencies>
<build/>
</project>
3.在src/main/java下创建实体Bean Forum,包名(com.mycompany.shequ.bean)如图所示
![QQ截图20170323144621.png Spring4-@Configuration的使用_Spring4_02](https://s2.51cto.com/wyfs02/M01/8F/16/wKioL1jTb2-jYTZpAABYPow0ZmM786.png?x-oss-process=image/resize,m_fixed,w_1184)
4.实体Bean Forum的内容如下
package com.mycompany.shequ.bean;
public class Forum {
private int fid;
private String name;
public int getFid() {
return fid;
}
public void setFid(int fid) {
this.fid = fid;
}
public String getName() {
return name;
}
public void setName(String name) {
this.name = name;
}
}
5.在src/main/java下创建接口IForumDao,包名(com.mycompany.shequ.service)如图所示
![QQ截图20170323144734.png Spring4-@Configuration的使用_@Configuration_03](https://s2.51cto.com/wyfs02/M00/8F/18/wKiom1jTb7fQJiJwAABYzbdFpf4770.png?x-oss-process=image/resize,m_fixed,w_1184)
6.接口IForumDao的内容如下
package com.mycompany.shequ.service;
import com.mycompany.shequ.bean.Forum;
public interface IForumDao {
public Forum getForumById(int fid);
}
7.在src/main/java下创建接口IForumDao的实现类ForumDaoImpl,包名(com.mycompany.shequ.service.impl)如图所示
![QQ截图20170323144910.png Spring4-@Configuration的使用_Spring4_04](https://s2.51cto.com/wyfs02/M00/8F/16/wKioL1jTcBTDW7AjAABcNCqrhdE118.png?x-oss-process=image/resize,m_fixed,w_1184)
8.实现类ForumDaoImpl的内容如下
package com.mycompany.shequ.service.impl;
import com.mycompany.shequ.bean.Forum;
import com.mycompany.shequ.service.IForumDao;
public class ForumDaoImpl implements IForumDao {
public Forum getForumById(int fid) {
Forum forum = new Forum();
forum.setFid(fid);
forum.setName("@Configuration");
return forum;
}
}
9.在src/main/java下创建配置类AppConfig,包名(com.mycompany.shequ.config)如图所示
![QQ截图20170323145135.png Spring4-@Configuration的使用_Spring4_05](https://s2.51cto.com/wyfs02/M02/8F/16/wKioL1jTcKfTYlJmAABdEL4tj2E979.png?x-oss-process=image/resize,m_fixed,w_1184)
10.配置类AppConfig的内容如下
package com.mycompany.shequ.config;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import com.mycompany.shequ.service.IForumDao;
import com.mycompany.shequ.service.impl.ForumDaoImpl;
@Configuration
public class AppConfig {
@Bean(name="forumdao")
public IForumDao forumDao(){
return new ForumDaoImpl();
}
}
11.在src/test/java下创建测试类ForumDaoTest,包名(com.mycompany.shequ.service),如图所示
![QQ截图20170323145458.png Spring4-@Configuration的使用_Spring4_06](https://s2.51cto.com/wyfs02/M01/8F/16/wKioL1jTcXCzc7-zAABLjx3_WhM650.png?x-oss-process=image/resize,m_fixed,w_1184)
12.测试类ForumDaoTest的内容如下
package com.mycompany.shequ.service;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.annotation.AnnotationConfigApplicationContext;
import com.mycompany.shequ.bean.Forum;
import com.mycompany.shequ.config.AppConfig;
import com.mycompany.shequ.service.IForumDao;
public class ForumDaoTest {
/**
* spring 的自动装配Beans,通过@Qualifier装配指定bean
*/
@Test
public void getForumByIdTest(){
ApplicationContext context = new AnnotationConfigApplicationContext(AppConfig.class);
IForumDao forumDao = (IForumDao) context.getBean("forumdao");
Forum forum = forumDao.getForumById(1);
System.out.println(forum.getName());
}
}
13.在测试类ForumDaoTest的getForumByIdTest方法上右键运行,输出结果如图所示
![QQ截图20170323145628.png Spring4-@Configuration的使用_@Configuration_07](https://s2.51cto.com/wyfs02/M00/8F/16/wKioL1jTcc_gUqsbAAEKEm_I_Og020.png?x-oss-process=image/resize,m_fixed,w_1184)
![QQ截图20170324102905.png Spring4-@Configuration的使用_Spring4_08](https://s2.51cto.com/wyfs02/M02/8F/20/wKioL1jUhg-xxRGGAABwCKMO5XE157.png?x-oss-process=image/resize,m_fixed,w_1184)