|
建立一个model
package com.deciphering.model;
public class User {
private String username;
private String password;
public String getUsername() {
return username;
}
public void setUsername(String username) {
this.username = username;
}
public String getPassword() {
return password;
}
public void setPassword(String password) {
this.password = password;
}
}
建立一个dao层：
package com.deciphering.dao;
import com.deciphering.model.User;
public interface UserDAO {
public void save(User user);
}
package com.deciphering.dao.impl;
import com.deciphering.dao.UserDAO;
import com.deciphering.model.User;
public class UserDAOImpl implements UserDAO {
@Override
public void save(User user) {
System.out.println(user.getUsername() + " saved in Oracle!");
// System.out.println(user.getUsername() + " saved in DB2!");
// System.out.println(user.getUsername() + " saved in mysql!");
}
}
建立一个service；
package com.deciphering.service;
import com.deciphering.model.User;
public interface UserService {
// 处理新增用户业务逻辑
public void add(User user);
}
package com.deciphering.service;
import com.deciphering.dao.UserDAO;
import com.deciphering.model.User;
public class UserServiceImpl {
private UserDAO userDAO;
public void add(User user) {
userDAO.save(user);
}
public UserDAO getUserDAO() {
return userDAO;
}
public void setUserDAO(UserDAO userDAO) {
this.userDAO = userDAO;
}
public UserServiceImpl(UserDAO userDAO) {
super();
this.userDAO = userDAO;
}
}
写一个Spring的bean配置文件
<?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-2.5.xsd">
<bean id="u" class="com.deciphering.dao.impl.UserDAOImpl">
</bean>
<bean id="userService" class="com.deciphering.service.UserServiceImpl">
<!--
<property name="userDAO">
<ref bean="u"/>
</property>
-->
<constructor-arg>
<ref bean="u"/>
</constructor-arg>
</bean>
</beans>
开始测试：
package com.deciphering.service;
import org.junit.Test;
import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;
import com.deciphering.model.User;
public class UserServiceTest {
@Test
public void testAdd() throws Exception {
final ApplicationContext ctx = new ClassPathXmlApplicationContext("beans.xml");
final UserServiceImpl service = (UserServiceImpl) ctx.getBean("userService");
final User u = new User();
u.setUsername("测试用户");
u.setPassword("123456");
service.add(u);
}
}
输出：
一月 08, 2017 10:34:34 下午 org.springframework.context.support.AbstractApplicationContext prepareRefresh
信息: Refreshing org.springframework.context.support.ClassPathXmlApplicationContext@5211ef: startup date [Sun Jan 08 22:34:34 CST 2017]; root of context hierarchy
一月 08, 2017 10:34:34 下午 org.springframework.beans.factory.xml.XmlBeanDefinitionReader loadBeanDefinitions
信息: Loading XML bean definitions from class path resource [beans.xml]
一月 08, 2017 10:34:35 下午 org.springframework.beans.factory.support.DefaultListableBeanFactory preInstantiateSingletons
信息: Pre-instantiating singletons in org.springframework.beans.factory.support.DefaultListableBeanFactory@b0cea2: defining beans [u,userService]; root of factory hierarchy
测试用户 saved in Oracle!
ok | 
转播
