【文章推薦】后台報錯"Optional int parameter 'page' is present but cannot be translated into a null value due to being declared as a primitive type"

原文：后台報錯"Optional int parameter 'page' is present but cannot be translated into a null value due to being declared as a primitive type"

前端傳分頁參數時候，后端報錯，提示存在可選int參數 page ，但由於被聲明為基元類型，因此無法轉換為null值原因是后端獲取前端傳的參數接收給錯了，改成 PathVariable接收即可兩者區別： RequestParam和 PathVariable注解是用於從 request 中接收請求的，兩個都可以接收參數，關鍵點不同的是 RequestParam是從 request 里面拿取值， ...

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Optional int parameter 'pId' is present but cannot be translated into a null value due to being declared as a primitive type.

接口測試的時候遇到了一個問題，導致測試阻斷了好久，在此記錄，謹防忘記。具體報錯如下： Optional int parameter 'pId' is present but cannot be translated into a null value due to being ...

Optional int parameter 'id' is present but cannot be translated into a null value due to being declared as a primitive type.

報錯內容如下解決辦法將 int 改成 Integer。 Integer 是基本數據類型 int 的包裝類。int 的初值為 0，Ingeter 的初值為 null。一般情況下，盡量使用 Integer ，而不是 int。 ...

is present but cannot be translated into a null value due to being declared as a primitive type

解決辦法：把基本類型改為對象，譬如此處將pageId的類型由int 改為Integer ...

java.lang.IllegalStateException: Optional int parameter 'id' is not present but cannot be translated into a null value due to being declared

SSM框架的項目在輸入路徑時忘記加?id=x 才導致的問題 ...

Optional int parameter 'id' is present but cannot be translated into a null value due to being decla

這個錯誤可以將參數由int改為Integer ...

Optional int parameter 'id' is present but cannot be translated into a null value due to being 錯誤

這個錯誤是因為java獲取頁面數據的時候，id值可能為空，而int的默認值為0，若想能夠接受NULL的值，將int換成integer即可解決。遇到這個錯誤就是把參數int 改成Integer 大家以后在springmvc接受參數的時候，盡量不要使用基本數據類型，當然你一定要使用的話 ...

Optional int parameter 'time' is present but cannot be translated into a null value due to being decla

今天在操作redis的時候報了這個錯：Optional int parameter 'time' is present but cannot be translated into a null value due to being decla 這句話意思：參數time存在，但是無法將其轉為 ...

cannot be translated into a null value due to being declared as a primitive type. Consid

注意是參數傳入的名稱錯誤導致參數沒有傳遞進入同時又是 long 導致了如上異常其實改成Long就沒有問題了但是以后注意參數的名稱對應關系是note ...

原文：后台報錯"Optional int parameter 'page' is present but cannot be translated into a null value due to being declared as a primitive type"

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