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字符串從Oracle存儲過程返回到Java並帶有'???'

[英]String returned from oracle stored procedure to Java with '???'

我用Java編寫的代碼調用Oracle DB中的存儲過程,並返回帶有某些字段的對象。 當我從對象中找到屬性時-字符串有問題。 字符串變為“ ???” (3個問號),而不是那樣! (整數返回確定)

我在數據庫上測試了存儲過程-效果很好。

我用小的本地主程序測試了我的Java代碼,該程序調用了DB,並且運行良好。 (DB的連接直接通過DriverManager.getConnection(“ jdbc:oracle:thin:@ ......);)

當我在通過Weblogic連接到DB的大項目中使用存儲過程時,問題就來了。

當我使用WebLogic時,您知道如何從數據庫中獲取正確的字符串嗎?

Oracle代碼:

  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;

// 200個數組

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

//數組類型

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

// Java代碼:

              //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);

問題出在其他地方。 Oracle DB和DB驅動程序都不會將結果列替換為??? 在產品代碼中搜索該字符串,以了解使用原因。

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