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

旧城等待， 2023-01-20 11:53 13阅读 0赞

> [相关 知识 >>>][Link 1]
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> [相关 练习 >>>][Link 2]

## ##

## 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

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L3dlaXhpbl80NDg5MzkwMg_size_16_color_FFFFFF_t_70][]

## 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。

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！");
    		}
    		
    	}
    
    }

[Link 1]: https://blog.csdn.net/weixin_44893902/article/details/116671932
[Link 2]: https://blog.csdn.net/weixin_44893902/article/details/116724692
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