使用Mybats 实现curd操作! 1:加入jar包 2:配置文件的编写(包括两部分,一部分是总的配置文件a[]),另一部分是实体的配置文件!b[]))
a1):编写一个propertity配置文件,内容如下:
driver=com.mysql.jdbc.Driver url=jdbc:mysql://localhost:3306/mybatis username=root password=admina2):总的配置myBatis-config.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> <properties resource="com/tuojin/mybatis/res/config.properties" /> <environments default="tayfer"> <environment id="tayfer"> <transactionManager type="JDBC" /> <dataSource type="POOLED"> <property name="driver" value="${driver}" /> <property name="url" value="${url}" /> <property name="username" value="${username}" /> <property name="password" value="${password}" /> </dataSource> </environment> </environments> <mappers> <mapper resource="com/tuojin/mybatis/entrys/Student.xml" /> </mappers> </configuration>b1):映射类接口 com.tuojin.mybatis.mapper.StuMapper
public interface StuMapper{
public void addStu(Student stu);
public int deleteStu(int id);
public Student selectStu(int id);
public Student findAllStu();
public int updateStu(Student stu);
}
b2):映射类(实体)配置Map.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.tuojin.mybatis.mapper.StuMapper"> <resultMap type="com.tuojin.mybatis.entrys.Student" id="stuRes"> <id property="id" column="id" javaType="int" jdbcType="INTEGER" /> <result property="name" column="name" javaType="String" jdbcType="VARCHAR" /> <result property="version" column="version" javaType="String" jdbcType="VARCHAR" /> <result property="maker" column="maker" javaType="String" jdbcType="VARCHAR" /> </resultMap> <insert id="addStu" useGeneratedKeys="true" keyProperty="id"> insert into tb_student(name,version,maker) values(#{name},#{version},#{maker}) </insert> <delete id="deleteStu" parameterType="int"> delete from tb_student where id=#{id} </delete> <select id="selectStu" parameterType="int" resultMap="stuRes"> select * from tb_student where id=#{id} </select> <select id="findAllStu" resultMap="stuRes"> select * from tb_student </select> <update id="updateStu" parameterType="com.tuojin.mybatis.entrys.Student"> update tb_student set name=#{name},maker=#{maker},version=#{version} where id=#{id} </update> </mapper>
2:使用一个工具类,获取类似hibernate session
public class MybatisUtils { private static SqlSessionFactory sqlSessionFactory = null; private static SqlSession session = null; public static SqlSessionFactory getSqlSessionFactory() { return sqlSessionFactory; } public static SqlSession getSession() { return sqlSessionFactory.openSession(); } static { String URL = "com/tuojin/mybatis/res/sqlMapClient.xml"; try { Reader reader = org.apache.ibatis.io.Resources .getResourceAsReader(URL); sqlSessionFactory = new SqlSessionFactoryBuilder().build(reader); } catch (IOException e) { System.err.println(e.getMessage()); } } public static void closeSession(SqlSession session) { session.close(); }4:对数据库进行操作!
public class TestMyBatis { @Test public void testConfig() { MybatisUtils.getSession(); } @Test public void testAdd() { Student stu = new Student(); stu.setMaker("80"); stu.setName("tayfer"); stu.setVersion("100_1"); SqlSession session = MybatisUtils.getSession(); session.insert("addStu", stu); //IUserInfo mapper = session.getMapper(IUserInfo.class); mapper.insertUser(ui); session.commit(); MybatisUtils.closeSession(session); } @Test public void testDel() { SqlSession session = MybatisUtils.getSession(); int flag = session.delete("deleteStu", 17); session.commit(); MybatisUtils.closeSession(session); System.err.println(flag); } @Test public void testSelect() { SqlSession session = MybatisUtils.getSession(); Student stu = (Student) session.selectOne("selectStu", 18); session.commit(); MybatisUtils.closeSession(session); System.err.println(stu); } @Test public void testUpdate() { SqlSession session = MybatisUtils.getSession(); Student stu = (Student) session.selectOne("selectStu", 18); stu.setName("yuyu"); int flag = session.update("updateStu", stu); session.commit(); MybatisUtils.closeSession(session); System.err.println(flag); }转载于:https://www.cnblogs.com/SunDexu/archive/2013/05/25/3099231.html
相关资源:SpringBoot MyBatis增删改查demo,测试完整版