5. Mybatis UPDATE更新，DELETE删除

<?xml version="1.0" encoding="UTF-8" ?>  
<!DOCTYPE mapper  
PUBLIC "-//mybatis.org//DTD Mapper 3.0//EN"  
"http://mybatis.org/dtd/mybatis-3-mapper.dtd">  
<mapper namespace="com.accp.mybatis.model.Blog">  
    <update id="updateBlog" parameterType="Blog">    
       UPDATE Blog    
            SET title = #{title},     
                author_id = #{author.id},    
         WHERE id = #{id};  
    </update>    
</mapper>  

<delete id="deleteBlog" parameterType="Blog">    
      DELETE FROM BLOG WHERE ID = #{id}    
</delete>