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鏈接數(shù)據(jù)庫代碼(數(shù)據(jù)庫連接代碼寫在哪)
if connection ！= null quot數(shù)據(jù)庫連接成功quot else quot數(shù)據(jù)庫連接失敗quotconnectionclose return connection public void getResult throws ClassNotFoundException；1java連...