本文共 2511 字，大约阅读时间需要 8 分钟。

MyBatis官方文档

• ORM框架
• SqlSessionFactory的创建通过SqlSessionFactoryBuilder来实现

源码

package org.apache.ibatis.session;import java.io.IOException;import java.io.InputStream;import java.io.Reader;import java.util.Properties;import org.apache.ibatis.builder.xml.XMLConfigBuilder;import org.apache.ibatis.exceptions.ExceptionFactory;import org.apache.ibatis.executor.ErrorContext;import org.apache.ibatis.session.defaults.DefaultSqlSessionFactory;/** * Builds {@link SqlSession} instances. * @author Clinton Begin */public class SqlSessionFactoryBuilder {
     public SqlSessionFactory build(Reader reader) {
       return build(reader, null, null);  }  public SqlSessionFactory build(Reader reader, String environment) {
       return build(reader, environment, null);  }  public SqlSessionFactory build(Reader reader, Properties properties) {
       return build(reader, null, properties);  }  public SqlSessionFactory build(Reader reader, String environment, Properties properties) {
       try {
         // 解析MyBatis配置文件，创建SqlSessionFactory对象      XMLConfigBuilder parser = new XMLConfigBuilder(reader, environment, properties);      return build(parser.parse());    } catch (Exception e) {
         throw ExceptionFactory.wrapException("Error building SqlSession.", e);    } finally {
         ErrorContext.instance().reset();      try {
           reader.close();      } catch (IOException e) {
           // Intentionally ignore. Prefer previous error.      }    }  }  public SqlSessionFactory build(InputStream inputStream) {
       return build(inputStream, null, null);  }  public SqlSessionFactory build(InputStream inputStream, String environment) {
       return build(inputStream, environment, null);  }  public SqlSessionFactory build(InputStream inputStream, Properties properties) {
       return build(inputStream, null, properties);  }  public SqlSessionFactory build(InputStream inputStream, String environment, Properties properties) {
       try {
         XMLConfigBuilder parser = new XMLConfigBuilder(inputStream, environment, properties);      return build(parser.parse());    } catch (Exception e) {
         throw ExceptionFactory.wrapException("Error building SqlSession.", e);    } finally {
         ErrorContext.instance().reset();      try {
           inputStream.close();      } catch (IOException e) {
           // Intentionally ignore. Prefer previous error.      }    }  }      public SqlSessionFactory build(Configuration config) {
       return new DefaultSqlSessionFactory(config);  }}

转载地址：http://tnvli.baihongyu.com/