MyBatis注解环境搭建

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更多MyBatis详细介绍
请参考：
MyBatis是什么？
MyBatis和Hibernate的区别
MyBatis入门和环境搭建
MyBatis两种类型别名
MyBatis的详细CURD基本操作
MyBatis多表关系操作

• 1.mysql环境搭建
• 2.实体类和接口
• 3. 测试类
• • 4.运行结果截图

• 资源文件jdbcConfig.properties

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/mybatisdb?useSSL=false&useUnicode=true&characterEncoding=utf8
username=root
password=123456

• sqlMapConfig.xml

• 实体类

package com.itboy.domin;

import java.io.Serializable;
import java.util.Date;

public class User implements Serializable {
    private Integer id;
    private String username;
    private String address;
    private String sex;
    private Date birthday;

    public Integer getD() {
        return id;
    }

    public void setD(Integer id) {
        this.id = id;
    }

    public String getUsername() {
        return username;
    }

    public void setUsername(String username) {
        this.username = username;
    }

    public String getAddress() {
        return address;
    }

    public void setAddress(String address) {
        this.address = address;
    }

    public String getSex() {
        return sex;
    }

    public void setSex(String sex) {
        this.sex = sex;
    }

    public Date getBrithday() {
        return birthday;
    }

    public void setBrithday(Date birthday) {
        this.birthday = birthday;
    }

    @Override
    public String toString() {
        return "User{" +
                "id=" + id +
                ", username='" + username + ''' +
                ", address='" + address + ''' +
                ", sex='" + sex + ''' +
                ", birthday=" + birthday +
                '}';
    }
}

• 接口也可称为dao或mapper

package com.itboy.dao;

import com.itboy.domin.User;
import org.apache.ibatis.annotations.Select;

import java.util.List;

public interface IUserDao {
    @Select("select * from user")
    List findAll();
}

package com.itboy.test;
import com.itboy.dao.IUserDao;
import com.itboy.domin.User;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;

import java.io.InputStream;
import java.util.List;

public class MysqlTest {
    public static void main(String[] args) throws Exception {
        InputStream in= Resources.getResourceAsStream("SqlMapConfig.xml");
        SqlSessionFactory sessionFactory = new SqlSessionFactoryBuilder().build(in);
        SqlSession sqlSession = sessionFactory.openSession();
       IUserDao userDao =sqlSession.getMapper(IUserDao.class);
        List users=userDao.findAll();
        for(User user :users) {
            System.out.println(user);
        }
         sqlSession.close();
         in.close();
    }
}