spring练习，在Eclipse搭建的Spring开发环境中，使用set注入方式，实现对象的依赖关系，通过ClassPathXmlApplicationContext实体类获取Bean对象(代码片段

Posted 2021-07-24 明金同学

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实现要求：

在Eclipse搭建的Spring开发环境中，使用set注入方式，实现对象的依赖关系，通过ClassPathXmlApplicationContext实体类获取Bean对象，模拟实现用户的增删改操作，并将结果输出到控制台。要求如下：

• set注入方式实现对象的依赖关系。
• 增删改操作需要实现、提交和关闭操作。

事务的开启

实现思路：

在com.mhys.pojo包下，创建User类。 在com.mhys.dao包下，创建UserDao类。

package com.mhys.bean;

public class Users {
	private String userId;
	private String userName;
	private String password;
	private int age;
	private String address;
	private String flag;
	public Users() {
		super();
	}
	public Users(String userId, String userName, String password, int age, String address, String flag) {
		super();
		this.userId = userId;
		this.userName = userName;
		this.password = password;
		this.age = age;
		this.address = address;
		this.flag = flag;
	}
	@Override
	public String toString() {
		return "Users [userId=" + userId + ", userName=" + userName + ", password=" + password + ", age=" + age
				+ ", address=" + address + ", flag=" + flag + "]";
	}
	public String getUserId() {
		return userId;
	}
	public void setUserId(String userId) {
		this.userId = userId;
	}
	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;
	}
	public int getAge() {
		return age;
	}
	public void setAge(int age) {
		this.age = age;
	}
	public String getAddress() {
		return address;
	}
	public void setAddress(String address) {
		this.address = address;
	}
	public String getFlag() {
		return flag;
	}
	public void setFlag(String flag) {
		this.flag = flag;
	}
	
	
}

package com.mhys.Dao;

import com.mhys.bean.Users;

public class UsersDao {
	public Users getUserById(String userId){
		Users users = new Users("130006", "杨明金", "123456", 20, "云南", "1");
		return users;
	}
	public Boolean insertUser(Users users){
		System.out.println("插入数据："+users.getUserId()+"，"+users.getUserName()
				+"，"+users.getPassword()+"，"+users.getAge()+"，"
				+users.getAddress()+"，"+users.getFlag());
		return true;
	}
	public Boolean updataUserByid(Users users){
		System.out.println("修改用户编号："+users.getUserId()+"的密码为："+users.getPassword());
		return true;
	}
	public Boolean deleteUserByid(Users users){
		System.out.println("删除用户编号："+users.getUserId()+"的信息");
		return true;
	}
}

在com.mhys.service包下，创建UserService类。

package com.mhys.Dao;

import com.mhys.bean.Users;

public class UsersService {
	private UsersDao usersDao;
	
	public Users getUserInfoById(String userId){
		Users users = usersDao.getUserById(userId);
		return users;
	}
	public Boolean insertUserInfo(Users users) {
		System.out.println("开启事务");
		usersDao.insertUser(users);
		System.out.println("提交事务");
		System.out.println("关闭事务");
		return true;
	}
	public Boolean updataInfo(Users users) {
		System.out.println("开启事务");
		usersDao.updataUserByid(users);
		System.out.println("提交事务");
		System.out.println("关闭事务");
		return true;
	}
	public Boolean deleteInfo(Users users) {
		System.out.println("开启事务");
		usersDao.deleteUserByid(users);
		System.out.println("提交事务");
		System.out.println("关闭事务");
		return true;
	}
	
	public UsersDao getUsersDao() {
		return usersDao;
	}
	public void setUsersDao(UsersDao usersDao) {
		this.usersDao = usersDao;
	}
}

在applicationContext.xml配置文件中，注册userDao类和userService类到容器。

	<bean id="users" class="com.mhys.bean.Users"></bean>
	<bean id="usersDao" class="com.mhys.Dao.UsersDao"></bean>
	<bean id="usersService" class="com.mhys.Dao.UsersService">
		<property name="usersDao" ref="usersDao"></property>
	</bean>

在com.mhys.demo.test包下，创建测试类。

package com.mhys.test;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.mhys.Dao.UsersService;
import com.mhys.bean.Users;

public class T1_4_3Test {

	public static void main(String[] args) {
		ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("applicationContext.xml");
		UsersService usersService = (UsersService) context.getBean("usersService");
		//查询测试
		Users users1 = usersService.getUserInfoById("23");
		System.out.println(users1);
		
		//创建测试对象
		Users users2 = new Users("2487", "杨明金", "123456", 20, "云南省", "1");
		
		//添加测试
		Boolean flag1 = usersService.insertUserInfo(users2);
		if (flag1) {
			System.out.println("插入成功！");
		}
		
		//修改测试
		users1.setPassword("1111");
		Boolean flag2 = usersService.updataInfo(users2);
		if (flag2) {
			System.out.println("修改成功！");
		}
		
		//删除测试
		Boolean flag3 = usersService.deleteInfo(users2);
		if (flag3) {
			System.out.println("删除成功！");
		}
		
	}

}