Dao層如下：
int dynamicUpdateTable(@Param("table") Map table);
xml Sql：
<update id="dynamicUpdateTable" parameterType="map">
UPDATE ${table.tabName} SET
<foreach item="value" index="key" collection="table.entrySet()" separator=",">
???? <if test="key!='tabName' and key!='id'">
?????????? ${key} =? #{value}
???? </if>
</foreach>
WHERE id=#{tab.id}
</update>
入?yún)ⅲ?/p>
{
?? "colname":"40",
? ? "id":1,
? ? "createTime":"2018-02-08",
? ? "userName":"marvers",
? ? "tabName":"tab_m"
}
