Mybatis入门篇

Student类

package wuxupeng.domain;

public class Student {
    private  String id;
    private  String name;
    private  int age;

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        this.age = age;
    }

    public Student() {

    }

    @Override
    public String toString() {
        return "Student{" +
                "id='" + id + '\'' +
                ", name='" + name + '\'' +
                ", age=" + age +
                '}';
    }
}

mybatis-config.xml(数据库jdbc 的配置)

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE configuration  PUBLIC "-//mybatis.org//DTD Config 3.0//EN"  "http://mybatis.org/dtd/mybatis-3-config.dtd">
<configuration>
    <environments default="development">
        <environment id="development">
            <transactionManager type="JDBC"/>
            <dataSource type="POOLED">
                <property name="driver" value="com.mysql.jdbc.Driver"/>
                <property name="url" value="jdbc:mysql://localhost:3306/wu5"/>
                <property name="username" value="root"/>
                <property name="password" value="1234"/>
            </dataSource>
        </environment>
    </environments>
    <mappers>
        <!--<mapper resource="org/mybatis/example/BlogMapper.xml"/>-->
        <mapper resource="wuxupeng/mapper/Stumentmapper.xml"/>
       <!-- 加载文件 Stumentmapper.xml-->
    </mappers>
</configuration>

Stumentmapper.xml（sql语句标签的配置）

<?xml version="1.0" encoding="UTF-8" ?>
<!DOCTYPE mapper  PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"  "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="text1">

    <delete id="delete" parameterType="wuxupeng.domain.Student">
        delete  from stu where id=#{id}
    </delete>
    
</mapper>

sql标签的调用

package wuxupeng.Test;
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.IOException;
import java.io.InputStream;
public class Test {
    public static void main(String[] args) {
        String resource = "mybatis-config.xml";
        InputStream inputStream =null;
        try {
            inputStream= Resources.getResourceAsStream(resource);
        } catch (IOException e) {
            e.printStackTrace();
        }
        SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
        SqlSession session = sqlSessionFactory.openSession();
        int delete = session.delete("text1.delete", "2");
        System.out.println("================="+delete);
        //此时实物并未真实提交，(增删改都要提交事务)
        // 提交事务
        session.commit();
        System.out.println("================="+delete);
    }
}