Remember a note: pit mybatis encounter
Update operation performed when Mybatis;
Some data does not have to be modified, and therefore pass from the front desk over the data, some items may be null;
An exception will be during sql statement; the operation fails;
So stitching for dynamic SQL statements:
Change in UserMapper.xml in:
<update id="updateUser" parameterType="map" >
update saishiguanli.user
<trim prefix="set" suffixOverrides=",">
<if test="ulevel!=null">ulevel=#{ulevel},</if>
<if test="ugender!=null">ugender=#{ugender},</if>
<if test="uname!=null">uname=#{uname},</if>
<if test="upwd!=null">upwd=#{upwd},</if>
<if test="unickname!=null">unickname=#{unickname},</if>
<if test="uimage!=null">uimage=#{uimage},</if>
<if test="uphone!=null">uphone=#{uphone},</if>
<if test="ucreatetime!=null">ucreatetime=#{ucreatetime},</if>
</trim>
where uid = #{uid}
</update>