ssm整合之编写Spring框架
1.在resources目录下创建applicationContext.xml文件的代码如下:
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:aop="http://www.springframework.org/schema/aop"
xmlns:tx="http://www.springframework.org/schema/tx"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/aop
http://www.springframework.org/schema/aop/spring-aop.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd">
<!--开启注解的扫描,希望处理service和dao,controller不需要Spring框架去处理-->
<context:component-scan base-package="com.txw">
<!--配置哪些注解不扫描-->
<context:exclude-filter type="annotation" expression="org.springframework.stereotype.Controller" />
</context:component-scan>
</beans>
2.修改账户实现类的代码如下:
package com.txw.service.impl;
import com.txw.domain.Account;
import com.txw.service.AccountService;
import org.springframework.stereotype.Service;
import java.util.List;
/**
* 账户业务的实现类
* @author Adair
*/
@Service("accountService")
@SuppressWarnings("all") // 注解警告信息
public class AccountServiceImpl implements AccountService {
/**
* 查询所有账户
* @return
*/
@Override
public List<Account> findAll() {
System.out.println("业务层:查询所有账户...");
return null;
}
/**
* 保存帐户信息
* @param account
*/
@Override
public void saveAccount(Account account) {
System.out.println("业务层:保存帐户信息...");
}
}
声明@Service(“accountService”)是把业务层实现类叫交给IOC容器进行管理。
3.编写一个测试类的代码如下:
package com.txw.test;
import com.txw.service.AccountService;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
/**
* 测试类
* @author Adair
*/
@SuppressWarnings("all") // 注解警告信息
public class TestSpring {
@Test
public void run1(){
// 加载配置文件
ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
// 获取对象
AccountService as = (AccountService) ac.getBean("accountService");
// 调用方法
as.findAll();
}
}
运行结果如图所示: