更新删除相对简单点，只要属性和类型对应即可。

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模板

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	<update id="updateAuthor" parameterType="domain.blog.Author">
		update Author set
		username = #{username},
		password = #{password},
		email = #{email},
		bio = #{bio}
		where id = #{id} 
    </update>
	<delete id="deleteAuthor” parameterType=" int ">
		delete from Author where id = #{id} 
    </delete>

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其属性值

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<update 
　id="insertAuthor" 
　parameterType="domain.blog.Author" 
　flushCache="true" 
　statementType="PREPARED" 
　timeout="20000"> 

<delete 
　id="insertAuthor" 
　parameterType="domain.blog.Author" 
　flushCache="true" 
　statementType="PREPARED" 
　timeout="20000">