java之mybatis之配置文件讲解

1.核心配置文件

    
    
    
    <typeAliases>
        
        <package name="cn.sxt.vo"/>
        
    typeAliases>
    
    <environments default="development">
        <environment id="development">
            
            <transactionManager type="JDBC" />
            
            <dataSource type="POOLED">
                
                
                
                
            
        environment>
    environments>
    <mappers>
        
        
    mappers>

2.映射文件

<mapper namespace="cn.sxt.vo.UserMapper">
    
    parameterType="int" resultType="User">
        select * from t_user where id = #{id}
    
    
    parameterType="User">
        insert into t_user(name,age) values(#{name},#{age})
    
    
    
        delete from t_user where id=#{id}
    
    
    
        update t_user set name=#{name},age=#{age} where id=#{id}