目录结构

所有包路径在这里查看：

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分布构建：

建立console app工程：
使用idea 社区版或其他 IDE 创建Maven支持java console app的工程；
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添加依赖项(dependencies)：

这里使用 h2 嵌入式数据库

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
  xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <groupId>org.example</groupId>
    <artifactId>ConsoleMybatis</artifactId>
    <version>1.0-SNAPSHOT</version>
    <dependencies>
     <!-- https://mvnrepository.com/artifact/com.h2database/h2 -->
         <dependency>
             <groupId>com.h2database</groupId>
             <artifactId>h2</artifactId>
             <version>1.4.200</version>              
     </dependency>
     <!-- https://mvnrepository.com/artifact/org.mybatis/mybatis -->
         <dependency>
             <groupId>org.mybatis</groupId>
             <artifactId>mybatis</artifactId>
             <version>3.5.5</version>
         </dependency>
    </dependencies>
</project>

添加实体类User如下：

package domain;

public class User {
    private String id;
    private String name;
    private String sex;

    public String getId() {
        return id;
    }

    public String getName() {
        return name;
    }

    public String getSex() {
        return sex;
    }

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

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

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

新建 Mybatis 配置文件mybatis-config.xml，内容如下：

<?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="test">
   <environment id="test">
       <transactionManager type="JDBC"/>
       <dataSource type="POOLED">
           <property name="driver" value="org.h2.Driver"/>
           <property name="url" value="jdbc:h2:file:E:\\temp\\h2test"/>
           <property name="username" value="admin"/>
           <property name="password" value="admin"/>
       </dataSource>
   </environment>
</environments>

<!-- 映射器 -->
<mappers>
   <mapper resource="mapper/UserMapper.xml"/>
</mappers>
   </configuration>
   ```

添加 mapper 文件UserMapper.xml如下：

<?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="dao.IDaoUser">
<resultMap id="Users" type="domain.User">
    <id column="id" property="id" />
    <id column="name" property="name" />
    <id column="sex" property="sex" />
</resultMap>

<!--if exists drop table-->
<update id="dropTable" parameterType="java.lang.String">
    drop table if exists ${table}
</update>
<!--create table -->
<update id="createTable" parameterType="java.lang.String">
    ${sql}
</update>
<!--insert user to user table-->
<insert id="insertUser">
    insert into user (id, name, sex) values(#{id}, #{name}, #{sex})
</insert>
<!--select table-->
<select id="selectAll" parameterType="java.lang.String" resultMap="Users">
    select * from ${table}
</select>
</mapper>

添加dao文件 IDaoUser 类：

package dao;
import domain.User;
import org.apache.ibatis.annotations.Param;
import java.util.List;

public interface IDaoUser {
    public void dropTable(@Param("table") String table);
    public void createTable(@Param("sql") String sql);
    public void insertUser(@Param("id") String id, @Param("name") String name,@Param("sex") String sex);
    public List<User> selectAll(@Param("table") String table);
}

添加ConsoleMain类：

import dao.IDaoUser;
import domain.User;
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;
import java.util.List;
import java.util.UUID;

public class ConsoleMain {
    public static void main(String[] argv){
        try(
                InputStream inputStream = org.apache.ibatis.io.Resources.getResourceAsStream("mybatis-config.xml")
                ){
            SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
            try(
                    SqlSession sqlSession = sqlSessionFactory.openSession()
            ){
                IDaoUser user = sqlSession.getMapper(IDaoUser.class);
                if(null != user){
                    user.dropTable("user");
                    user.createTable("create table user(id varchar(36) primary key, name varchar(100), sex varchar(4))");
                    user.insertUser(UUID.randomUUID().toString(), "小青","男");
                    user.insertUser(UUID.randomUUID().toString(), "小红","女");
                    user.insertUser(UUID.randomUUID().toString(), "小紫","男");
                    user.insertUser(UUID.randomUUID().toString(), "小兰","女");
                    user.insertUser(UUID.randomUUID().toString(), "小虎","男");
                    user.insertUser(UUID.randomUUID().toString(), "小白","女");
                    List<User> users = user.selectAll("user");
                    for(User var : users){
                        System.out.println(var.getId() + "," + var.getName() + "," + var.getSex());
                    }
                }
            }    


        }catch (IOException e){
            e.printStackTrace();
        }

    }
}

编译运行：

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注意事项：

Maven h2 依赖文件中默认是 test scope,此处默认是测试有效，console 项目中需要删除；

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mapper文件中注意分清 #、 $ 占位符的区别：
- 参考：Mybatis 数据库框架 mapper文件中 # 与 $ 符号的区别
- #{} ：根据参数的类型进行合适的处理(比如传入String类型，会为参数加上双引号，如果传入Integer类型数据，则不会为参数加上双引号。#{} 传参在进行SQL预编译时，会把参数部分用一个占位符 ? 代替，这样可以防止 SQL注入);
- ${} ：将参数取出不做任何处理(直接放入语句中，就是简单的字符串替换，并且该参数会参加SQL的预编译，需要手动过滤参数防止 SQL注入);