使用'???'从oracle存储过程返回到Java的字符串

时间:2011-11-30 08:34:15

标签: java stored-procedures jdbc oracle10g weblogic

我在Java中的代码调用Oracle DB中的存储过程并返回带有一些字段的对象。 当我从对象中找到属性时 - 我对字符串有问题。字符串成为' ???' (3个任务标记)它不应该是那个! (整数返回OK)

我在数据库上测试了我的存储过程 - 它工作得很好。

我使用调用数据库的小型本地主程序测试了我的Java代码 - 它运行良好。 (DB与DriverManager.getConnection直接连接(" jdbc:oracle:thin:@ ......);)

当我在我的大项目中使用我的商店程序与weblogic连接到数据库时出现了问题。

在使用WebLogic时,您知道如何从数据库中获取正确的字符串吗?

Oracle代码:

  PROCEDURE SearchOrder (InWoArr IN WoTab,
                     OutWoAccStat OUT WoAccStatTab) as
  outRec WoAccStatType;
  wo number(10);
  acc number(10);
  stat varchar2(2);
  begin
  OutWoAccStat := WoAccStatTab();
    for i in InWoArr.FIRST .. InWoArr.LAST loop
    OutWoAccStat.EXTEND;
      begin
       select work_order_number,account_number,' '
    into wo,acc,stat
    from table1
    where work_order_number=InWoArr(i);
    ....
    outRec := WoAccStatType(wo,acc,stat);
    OutWoAccStat(i) := outRec;
  exception
    when no_data_found then
      outRec := WoAccStatType(InWoArr(i),0,' ');
      OutWoAccStat(i) := outRec;
  end;
end loop;
end SearchOrder;

//数组200

create or replace type poldev_dba.WoAccStatTab as VARRAY(200) of WoAccStatType

//数组类型

create or replace type poldev_dba.WoAccStatType as object (work_order_number number(10), account_number number(10), wo_status varchar2(2))

// Java代码:

              //Store Procedure Name
          CallableStatement cs = (CallableStatement) con.prepareCall("{ call spp.SearchOrder( ?, ? )}");                                                                                    

          //input:
          cs.setArray(1,woInput);

          //Output:
          cs.registerOutParameter(2,OracleTypes.ARRAY,"WOACCSTATTAB");

          //Run the query...
          cs.execute();

          //Retrieve Array:
          woAccArray = (ARRAY)cs.getArray(2);
          woAccRecs = (Object[])woAccArray.getArray();

          int wo = 0;
          int acc = 0;
          String stat;

          for (int i = 0; i < woAccRecs.length; i++) {
              /* Since we don't know the type of the record, get it into STRUCT !! */
              STRUCT woAccRec = (oracle.sql.STRUCT)woAccRecs[i];
              /* Get the attributes - nothing but the columns of the table */
              Object[] attributes = woAccRec.getAttributes();

              /* attribute 0 - work order */
              wo = Integer.parseInt("" + attributes[0]);

              /* attribute 1 - account number */
              acc = Integer.parseInt("" + attributes[1]);

              /* attribute 2 - status */
              stat = (String) attributes[2]; 
              /*PROBLEM!!!! stat returned value '???'*/

              System.out.println("wo = " + wo + ",acc = " + acc +", status = "+stat);

1 个答案:

答案 0 :(得分:0)

问题出在其他地方。 Oracle DB和DB驱动程序都不会将结果列替换为???。在产品代码中搜索此字符串,了解其使用原因。