Parameter 'ids' not found. Available parameters are [array]

傳的參數是一個數組, Long[] ids

後臺錯誤寫法

   <delete id="deleteById">
        delete from table
       where id in 
    <foreach collection="ids" index="index" item="item" open="(" separator="," close=")">     
        #{item}    
    </foreach>
  </delete>

正確寫法

   <delete id="deleteById">
         delete from table
       where id in 
    <foreach collection="array" index="index" item="item" open="(" separator="," close=")">     
        #{item}    
    </foreach>
  </delete>

當mybatis傳入參數爲list集合的時候；mybatis會自動把其封裝爲一個map；會以「list」做爲key；每一個元素的值做爲value；格式爲 Map<"list",value>

 

 

當mybatis傳入參數爲數組的時候mybatis會自動把其封裝爲一個map；會以「array」做爲key；每一個元素的值做爲value；格式爲Map<"array",value>