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

傳的參數是一個數組, Long[] ids

后台錯誤寫法

   <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傳入參數為list集合的時候；mybatis會自動把其封裝為一個map；會以“list”作為key；每個元素的值作為value；格式為 Map<"list",value>

 

 

當mybatis傳入參數為數組的時候mybatis會自動把其封裝為一個map；會以“array”作為key；每個元素的值作為value；格式為Map<"array",value>