在oracle 10g express版本中獲取ClassCastException。

Question

我正在嘗試連接到數據庫表並獲取java.lang.ClassCastException: oracle.jdbc.driver.T4CStatement cannot be cast to java.beans.Statement oracle 10g express版中的java.lang.ClassCastException: oracle.jdbc.driver.T4CStatement cannot be cast to java.beans.Statement

        Class.forName("oracle.jdbc.driver.OracleDriver");
        System.out.println("Driver loaded.");

        Connection con = DriverManager.getConnection("jdbc:oracle:thin:@localhost:1521:xe","system","toushif");
        System.out.println("Connection Established.");
        String sql = "SELECT * FROM  TOUSHIF";

        Statement st = (Statement) con.createStatement();
        ResultSet rs = ((java.sql.Statement) st).executeQuery(sql);

        while(rs.next())
        {
            System.out.println(rs.getString(1));
        }

Answer 1

con.createStatement()應該返回java.sql.Statement的實現而不是java.beans.Statement 。

也許您導入java.beans.Statement而不是java.sql.Statement導致轉換失敗？