用于调用 Teradata 存储过程的示例 Java 程序

Question

我想从 Java 程序中调用 Teradata 存储过程，任何人都可以有示例 java 程序吗？

由于某些限制，我无法在 Teradata 中创建一些 UDF 函数，因此我将这些函数开发为 Teradata 中的存储过程。

现在，我需要使用 Java 程序调用这些过程。

朋友们，这是我的java程序，

public static String executeme(String x,String y) throws SQLException, ClassNotFoundException
 {
     System.out.println(" Message: 2 " );
     String connectionString = "jdbc:teradata://192.168.0.0/xyz,tmode=ANSI,charset=UTF8,DBS_PORT=1025,DATABASE=xyz";
     String user = "xyz";
     String passwd = "xxx";
     System.out.println(" Message: 3 after url " +x );
     String sCall = "{CALL "+x+"(?,?)}";
     System.out.println(" Message: after call str " +sCall );
     String result = null;

     try
     {
         Class.forName("com.teradata.jdbc.TeraDriver");

         Connection con = DriverManager.getConnection(connectionString, user, passwd);  
         System.out.println(" Message: after con "+con  );
         CallableStatement cStmt = con.prepareCall(sCall);
         cStmt.setString(1, y);
         cStmt.registerOutParameter(2, Types.VARCHAR);          
         result = cStmt.getString(2);   

         return result;  


     }       
     catch(ClassNotFoundException e)
     {
         System.out.println(" Message: " + e);
         return e.toString();    
     }



 }
public static void main(String[] args) throws SQLException, ClassNotFoundException {
    // TODO Auto-generated method stub

    String outs=null; 
    System.out.println(" Message: 1 " );
    outs = testing.executeme("sample_name", "ABCD");
     System.out.println(outs);
}

但是，在运行这个程序时，我得到了错误：

Message: 1 
Message: 2 
Message: 3 after url ment_f_swithin
Message: after con com.teradata.jdbc.jdk6.JDK6_SQL_Connection@85ede7b
Exception in thread "main" java.sql.SQLException: [Teradata Database] [TeraJDBC 14.10.00.42] [Error 5510] [SQLState HY000] Invalid session mode for   procedure execution.
at com.teradata.jdbc.jdbc_4.util.ErrorFactory.makeDatabaseSQLException  (ErrorFactory.java:308)
at com.teradata.jdbc.jdbc_4.statemachine.ReceiveInitSubState.action(ReceiveInitSubState.java:109)
at com.teradata.jdbc.jdbc_4.statemachine.StatementReceiveState.subStateMachine(StatementReceiveState.java:307)
at com.teradata.jdbc.jdbc_4.statemachine.StatementReceiveState.action(StatementReceiveState.java:196)
at com.teradata.jdbc.jdbc_4.statemachine.StatementController.runBody(StatementController.java:123)
at com.teradata.jdbc.jdbc_4.statemachine.StatementController.run(StatementController.java:114)
at com.teradata.jdbc.jdbc_4.TDStatement.executeStatement(TDStatement.java:386)
at com.teradata.jdbc.jdbc_4.TDStatement.prepareRequest(TDStatement.java:573)
at com.teradata.jdbc.jdbc_4.TDPreparedStatement.<init>(TDPreparedStatement.java:117)
at com.teradata.jdbc.jdk6.JDK6_SQL_PreparedStatement.<init>(JDK6_SQL_PreparedStatement.java:29)
at com.teradata.jdbc.jdk6.JDK6_SQL_CallableStatement.<init>(JDK6_SQL_CallableStatement.java:23)
at com.teradata.jdbc.jdk6.JDK6_SQL_Connection.constructCallableStatement(JDK6_SQL_Connection.java:87)
at com.teradata.jdbc.jdbc_4.TDSession.prepareCall(TDSession.java:1373)
at com.teradata.jdbc.jdbc_4.TDSession.prepareCall(TDSession.java:1408)
at com.teradata.jdbc.jdbc_4.TDSession.prepareCall(TDSession.java:1394)
at java_func.testing.executeme(testing.java:32)
at java_func.testing.main(testing.java:55)

我尝试使用 ANSI、TERA、BTET 的所有 3 种模式。但我仍然遇到同样的错误，请指导我

Answer 1

Connection conn1;

<... connect conn1 ...>

conn1.createStatement().execute("call proc_test()");

Answer 2

只是代替这一行：

String connectionString = "jdbc:teradata://192.168.0.0/xyz,tmode=ANSI,charset=UTF8,DBS_PORT=1025,DATABASE=xyz";

我变成了

String connectionString = "jdbc:teradata://192.168.0.0/tmode=ANSI,charset=UTF8";