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芝芝兰兰
2019-07-04 18:58:03
同学你好。还可以看一下，DepartmentDao.xml中的parameterType是否写成“department”了？
<?xml version="1.0" encoding="utf-8" ?>
<!DOCTYPE mapper PUBLIC "-//mybatis.org//DTD Mapper 3.4//EN" "http://mybatis.org/dtd/mybatis-3-mapper.dtd">
<mapper namespace="com.imooc.sm.dao.DepartmentDao">
<resultMap id="resultMap" type="Department">
<id property="id" column="id" javaType="Integer"/>
<result property="name" column="name" javaType="String"/>
<result property="address" column="address" javaType="String"/>
</resultMap>
<insert id="insert" parameterType="Department" useGeneratedKeys="true">
insert into department(name,address) values(#{name},#{address})
</insert>
<delete id="delete" parameterType="Integer">
delete from department where id=#{id}
</delete>
<update id="update" parameterType="Department">
update department set name=#{name},address=#{address} where id=#{id}
</update>
<select id="selectById" parameterType="Integer" resultMap="resultMap">
select * from department where id=#{id}
</select>
<select id="selectAll" resultMap="resultMap">
select * from department
</select>
</mapper>如果解答了同学的疑问，望采纳~
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