紧急求助，关于oracle存储过程传入字符串数组参数的问题。

存储过程传入一个字符串数组参数，但是在array中得不到传入的值。

以下是我的代码：
CREATE OR REPLACE TYPE CUTGRPBRA_OBJECT AS OBJECT(
Valid VARCHAR2(30),
BraType VARCHAR2(30),
ID_Name VARCHAR2(30),
I_Name VARCHAR2(30),
J_Name VARCHAR2(30),
ID_No VARCHAR2(30),
Ndirect VARCHAR2(30),
Pmax VARCHAR2(30),
Pmin VARCHAR2(30)
);

CREATE OR REPLACE TYPE CUTGRPBRA_TABLE as TABLE OF CUTGRPBRA_OBJECT;

public ARRAY getArray(String OracleObj,String OracleTbl) throws Exception{

// my code
ARRAY list = null;
StructDescriptor structdesc = new StructDescriptor(OracleObj,conn);
Object[] o1 = new Object[]{"1","1","1","2","2","2","2","2","2"};

STRUCT s1 = new STRUCT(structdesc, conn, o1);
STRUCT[] structs = {s1};

ArrayDescriptor arraydesc = new ArrayDescriptor(OracleTbl,conn);
list = new ARRAY(arraydesc,conn, structs);
return list;
}

在getArray方法中跟踪s1，结果为 空，即看不到传入的字符值:data = byte[0]