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作者 sssyoyo 在 PTT [ java ] 看板的留言(推文), 共9則
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2F推: 拋異常我在自學時也不太明白,實際工作後才懂。其實也很07/02 10:06
3F→: 單純,就是告訴你調用這個方法可能導致某種異常必須想好07/02 10:06
4F→: 怎處理。例如使用者註冊帳號,寫入DB發現UNIQUE 的身分證07/02 10:06
5F→: 號重覆。那總不能讓使用者點了註冊之後因為後臺程式卡住07/02 10:06
6F→: ,所以前端啥反應都沒有,所以就要處理例如返回一個訊息07/02 10:06
7F→: 是"身分證號重覆導致註冊失敗"。有些方法就是很容易出錯07/02 10:06
8F→: ,例如解析JSONstring常常有錯字或大小寫差異導致失敗,07/02 10:06
9F→: 那他宣告throws異常讓你更容易知道要做好準備處理07/02 10:06
1F推: 謝謝! 學到了04/16 13:35
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