java - 创建语句失败

Question

我正在尝试在运行时加载一个 jar，在本例中为 ojdbc14.jar。jar 被正确加载，我还能够创建到数据库(oracle)的连接。但是每当我尝试执行 connection.createStatement(); 时，它都会给我这个异常

$Exception in thread "Thread-24" java.lang.IllegalAccessError: tried to access method oracle.jdbc.driver.OracleSql.(Loracle/jdbc/driver/DBConversion;)V from class oracle.jdbc.driver.OracleStatement at oracle.jdbc.driver.OracleStatement.(OracleStatement.java:641) at oracle.jdbc.driver.T4CStatement.(T4CStatement.java:702) at oracle.jdbc.driver.T4CDriverExtension.allocateStatement(T4CDriverExtension.java:50) at oracle.jdbc.driver.PhysicalConnection.createStatement(PhysicalConnection.java:584) at oracle.jdbc.driver.PhysicalConnection.createStatement(PhysicalConnection.java:550) at genInstaller.Controller.MetadataScriptManager.checkTableExistence(MetadataScriptManager.java:450) ... ... ...

编辑:

String dbDriverLocn = //location of ojdbc14.jar 
String strDBDriverURL = "jdbc:oracle:thin:@frewper:1521:ORCL" 
String strDBUserName = "frewper" 
String strDBUserPassword = "frewper" 

new LoadClassTest().callToLoad(dbDriverLocn); 

try 
 { 
  Class.forName("oracle.jdbc.driver.OracleDriver"); 
  Connection conn = DriverManager.getConnection(strDBDriverURL,strDBUserName,strDBUserPassword); 
  Statement st = conn.createStatement(); 
   //Exception occurs here 
 } catch (SQLException e) 
 { 
   e.printStackTrace(); 
 } 

Answer 1

根据这个thread看来您已经针对旧版本的 jdbc 驱动程序进行了编译，并且在运行时尝试访问不再可见的类的方法，请参阅 Oracles Announcement: oracle.jdbc.driver package desupport .