Mybatis工具类

不谈恋爱的猫2024-05-10 14:31

前提：已经配置好mybatis的环境。（核心配置文件、mapper映射、实体类、数据库、mapper接口）

工具类：

java 复制代码

public class MybatisUtil {

    private static SqlSessionFactory sqlSessionFactory = null;
    private static String xmlPath = "";//mybatis核心配置文件

    private MybatisUtil(){}

    static {
        try {
            InputStream inputStream = Resources.getResourceAsStream(xmlPath);
            sqlSessionFactory  = new SqlSessionFactoryBuilder().build(inputStream);
        } catch (IOException e) {
            throw new RuntimeException(e);
        }

    }

    public static SqlSession openSession(){
        return  sqlSessionFactory.openSession();
    }//手动提交事务，默认。

    public static SqlSession openSession(Boolean flag){
        return  sqlSessionFactory.openSession(flag);
    }//自动提交事务

    public static void closeSqlSession(SqlSession sqlSession){
        if (sqlSession!=null){
            sqlSession.close();
        }
    }//自动提交事务，true时为自动开启事务

    public static void dateRoolBack(SqlSession sqlSession){
        if (sqlSession!=null){
            sqlSession.rollback();
        }
    }

       public static void dateCommit(SqlSession sqlSession){
        if (sqlSession!=null){
            sqlSession.commit();
        }
    }
}

使用：

java 复制代码

 SqlSession sqlSession= MybatisUtil.openSession();
Mapper接口  mapper接口对象 =  sqlSession.getMapper(Mapper接口.class);
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