在Oracle 10g express版本中获取ClassCastException。

Question

我试图连接到一个数据库表，获取 java.lang.ClassCastException: oracle.jdbc.driver.T4CStatement cannot be cast to java.beans.Statement在Oracle 10g Express版

 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()应返回java.sql.Statement的实现，而不是java.beans.Statement。

也许你是进口java.beans.Statement而不是java.sql.Statement导致铸件失效？