第一種:編寫xml檔案的形式配置。
<?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>
<!--引入配置檔案-->
<properties resource="db.properties"/>
<environments default="development">
<environment id="development">
<transactionManager type="JDBC"/>
<dataSource type="POOLED">
<!--通過配置檔案的資訊來傳值-->
<property name="driver" value="${db.driver}"/>
<property name="url" value="${db.url}"/>
<property name="username" value="${db.username}"/>
<property name="password" value="${db.password}"/>
</dataSource>
</environment>
</environments>
<mappers>
<!--以接口為主,并自動加載接口名的映射配置檔案-->
<package name="cn.**.mapper"/>
</mappers>
</configuration>
第二種:通過程式設計的方式來配置
public void init() throws IOException {
//此次使用的阿裡的druid連接配接池
DruidDataSource dataSource = new DruidDataSource();
var prop = new Properties();
prop.load(Resources.getResourceAsStream("db.properties"));
dataSource.setConnectProperties(prop);
//建立事務管理對象
TransactionFactory tf = new JdbcTransactionFactory();
//建立mybatis環境
Environment env = new Environment("development", tf, dataSource);
//建立配置對象,别導入錯誤包,Configuration的包為:org.apache.ibatis.session.Configuration
Configuration configuration = new Configuration(env);
//加入具體接口類以及包
configuration.addMapper(UserMapper.class);
SqlSessionFactory sqlSessionFactory = new SqlSessionFactoryBuilder().build(configuration);
session = sqlSessionFactory.openSession();
UserMapper um = session.getMapper(UserMapper.class);
}
此文章為Mybatis的配置,Mybatis如何使用後續會進行補充。