Mybatis 执行过程

目录

创建Configuration对象

创建sqlSessionFactory

创建sqlSession

执行具体的SQL

释放连接资源

SqlSession组件源码解析

DefaultSqlSession

SqlSessionFactory

DefaultSqlSessionFactory

SqlSessionManager

---

String resource = "mybatis-config.xml";
InputStream inputStream = Resources.getResourceAsStream(resource);
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(inputStream);
SqlSession sqlSession = sqlSessionFactory.openSession();
List list = sqlSession.selectList("com.foo.bean.BlogMapper.queryAllBlogInfo");

创建Configuration对象

MyBatis初始化时会执行SqlSessionFactoryBuilder中的build()方法,build方法调XMLConfigBuilder()的parse()方法返回Configuration对象。

public Configuration parse() {
        if (parsed) {
            throw new BuilderException("Each XMLConfigBuilder can only be used onc