mybatis框架demo first

SqlMapConfig.xml:

<?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 = "environment">
                <environment id="environment">
                    <transactionManager type = "JDBC"/>
                        <dataSource type = "POOLED">
                            <property name = "driver" value = "com.mysql.jdbc.Driver"/>
                            <property name = "url" value = "jdbc:mysql:///test"/>
                            <property name = "username" value = "root"/>
                            <property name = "password" value = "1234"/>
                           </dataSource>
                </environment>
            </environments>
            <mappers>
                 <mapper resource = "com/entity/Dept.xml"/>
            </mappers>
       </configuration>

Dept:

package com.entity;
 
/**
 * Created by samdi on 2016/3/3.
 */
public class Dept {
    private Integer deptno;
    private String dname;
    private String loc;
 
    public String getLoc() {
        return loc;
    }
 
    public void setLoc(String loc) {
        this.loc = loc;
    }
 
    public String getDname() {
 
        return dname;
    }
 
    public void setDname(String dname) {
        this.dname = dname;
    }
 
    public Integer getDeptno() {
 
        return deptno;
    }
 
    public void setDeptno(Integer deptno) {
        this.deptno = deptno;
    }
}

Dept.xml:

<?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="com.entity.DeptMapper">
             <insert id = "addDept"
                     parameterType="com.entity.Dept">
                 insert into T_DEPT (DEPTNO,DNAME,LOC)
                 values (#{deptno},#{dname},#{loc})
             </insert>
             <select id = "findAll" resultType = "com.entity.Dept">
                 select DEPTNO,DNAME,LOC from T_DEPT
             </select>
        </mapper>

DeptMapper:

package com.entity;
 
import java.util.List;
 
/**
 * Created by samdi on 2016/3/3.
 */
public interface DeptMapper {
    public void addDept(Dept dept);
    public List<Dept> findAll();
}

test类,以其中一个为例：

package com.test;
 
import com.entity.Dept;
import org.apache.ibatis.io.Resources;
import org.apache.ibatis.session.RowBounds;
import org.apache.ibatis.session.SqlSession;
import org.apache.ibatis.session.SqlSessionFactory;
import org.apache.ibatis.session.SqlSessionFactoryBuilder;
import org.junit.Test;
 
import java.io.IOException;
import java.io.Reader;
import java.util.List;
 
/**
 * Created by 无名 on 2016/3/3.
 */
public class TestPage {
    @Test
    public void testFindPage() throws IOException{
        String conf = "SqlMapConfig.xml";
        Reader reader = Resources.getResourceAsReader(conf);
        //创建session对象
        SqlSessionFactoryBuilder ssfb = new SqlSessionFactoryBuilder();
        SqlSessionFactory ssf = ssfb.build(reader);
        //创建session
        SqlSession session= ssf.openSession();
 
        //起点，从0开始
        int offset = 0;
        //查几条
        int limit = 3;
        RowBounds rowBounds = new RowBounds(offset,limit);
        List<Dept> list = session.selectList("findAll",null,rowBounds);
        for(Dept dept:list){
            System.out.println(dept.getDeptno() + " "
                + dept.getDname() + " " + dept.getLoc());
        }
        session.close();
    }
}

运行：