mybatis-04(使用annotation完成对sql的获取)

使用annotation完成对sql的获取

mybatis-config.xml文件

<configuration>
    <properties resource="db.properties"/>
    <typeAliases>
        <!-- 两种方法随便用，建议用第二种 -->
        <!--<typeAlias type="com.huawei.bean.Student" alias="Student"/>-->
        <package name="com.huawei.bean"/>
        </typeAliases>
    <environments default="development">
        <environment id="development">
            <!-- 配置事务 -->
            <transactionManager type="JDBC" />
            <!-- 配置数据库连接信息 -->
            <dataSource type="POOLED">
                <property name="driver" value="${driver}" />
                <property name="url" value="${url}" />
                <property name="username" value="${username}" />
                <property name="password" value="${password}" />
            </dataSource>
        </environment>
    </environments>
    <mappers>
        <mapper class="com.huawei.mapper.StudentMapper"/>
    </mappers>
</configuration>

StudentMapper.java文件

package com.huawei.mapper;

import java.util.List;

import org.apache.ibatis.annotations.Insert;
import org.apache.ibatis.annotations.Select;

import com.huawei.bean.Student;

public interface StudentMapper {
    @Insert("insert into student (id,name,grade,classname) values(seq_student_id.nextval,#{name},#{grade},#{className})")
    public void add(Student bean);

    @Select("select id as id ,name as name,grade as grade, classname as className from student")
    public List<Student> getStudents();

}

项目结构