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[Spring] IOC - study
Spring IOC简单注入例子，本例子使用JUnit进行测试。Spring版本：3.2
项目结构:
Spring所需引用的JAR包：
Spring XML配置：
springContext.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.xsd"> <import resource="dao.xml"/> <import resource="service.xml"/></beans>
dao.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.xsd"> <bean name="accountDaoFactory" class="com.my.dao.AccountFactory" abstract="true"></bean> <bean name="accountDAO" class="com.my.dao.mysql.AccountDAO" parent="accountDaoFactory"></bean></beans>
service.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.xsd"> <bean name="accountServiceFactory" class="com.my.service.AccountServiceFactory" abstract="true"></bean> <bean name="accountService" class="com.my.service.mysql.AccountService" parent="accountServiceFactory"> <property name="account" ref="accountDAO"></property> </bean></beans>
DAO的java class:
package com.my.dao;public abstract class AccountFactory { /* * Fin account by id */ public abstract Integer findAccount(Integer accountID);}
package com.my.dao.mysql;public class AccountDAO extends com.my.dao.AccountFactory { /* * Find account by account id */ @Override public Integer findAccount(Integer accountID) { return accountID; }}
Service的java class:
package com.my.service;public abstract class AccountServiceFactory { protected com.my.dao.AccountFactory account; public com.my.dao.AccountFactory getAccount() { return account; } public void setAccount(com.my.dao.AccountFactory account) { this.account = account; } /* * Find account by id */ public abstract Integer finAccount(Integer accountID);}
package com.my.service.mysql;public class AccountService extends com.my.service.AccountServiceFactory { @Override public Integer finAccount(Integer accountID) { return account.findAccount(accountID); }}
测试类：
package com.my.test;import org.springframework.context.ApplicationContext;import org.springframework.context.support.ClassPathXmlApplicationContext;import com.my.service.AccountServiceFactory;public class SpringTest { private ApplicationContext context = new ClassPathXmlApplicationContext("springContext.xml"); public SpringTest(){ } public Integer findAccount(Integer accountID){ AccountServiceFactory account = (AccountServiceFactory)context.getBean("accountService"); Integer id = account.finAccount(100); return id; }}
JUnit测试：
package com.my.test;import static org.junit.Assert.*;import org.junit.Before;import org.junit.Test;public class SpringTestTest { private SpringTest sp = new SpringTest(); @Before public void setUp() throws Exception { } @Test public void testFindAccount() { Integer accountID = 100; Integer result = sp.findAccount(accountID); assertEquals((Integer)100, result); System.out.println(result); }}
运行JUnit测试结果：
[Spring] IOC - study
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