我把代码贴出来,请大家帮忙纠正一下
create or replace procedure "sys"."proc_test"
(v_string out varchar2)
as
begin
v_string := 'test';
end;
procTest.setMetaDataUpdate(MetaDataUpdate.ALL);
procTest.setProcedure(new com.borland.dx.sql.dataset.ProcedureDescriptor(database, "{ call PROC_TEST(?) }", parameterRow, false, Load.ALL));
parameterRow.setColumns(new Column[] {v_string});
String s = "";
parameterRow.setString("v_string",s);
procTest.executeQuery();
//这句话执行出错
s = procTest.getString("v_string");
请问各位到底是什么原因,偶是java菜鸟,大家见谅,解决立即给分。谢谢