java 调用存储过程 传入和返回全部是自定义数组

String result="";
Connection con = DriverManager.getConnection("jdbc:oracle:thin:@192.168.19.133:1521:gbk10g", "wzh", "wzh");
long start = System.currentTimeMillis();
con.setAutoCommit(false);
CallableStatement cstmt = con.prepareCall("{ ? = call getRowMd5(?) }");
//设置返回的数组类型
cstmt.registerOutParameter(1,OracleTypes.ARRAY,"TABLE_DM");
//开始设置传入数组
List<String> list=new ArrayList<String>();
for(int i=1;i<=1000;i++){
list.add(i+"");
}
ArrayDescriptor arrayDesc = ArrayDescriptor.createDescriptor("EMPARRAY", con);
ARRAY array = new ARRAY(arrayDesc, con, list.toArray());
cstmt.setArray(2, array);
//结束设置传入数组
cstmt.execute();
con.commit();
//开始处理传入数组
Array aa = cstmt.getArray(1);
Object[] obj = (Object[]) aa.getArray();
for (int i = 0; i < obj.length; i++) {
STRUCT struct = (STRUCT) obj[i];
Datum[] dt = struct.getOracleAttributes();
for (int n = 0; n < dt.length; n++) {
System.out.print(dt
+"   ");
}
System.out.println();
}
//结束处理传入数组
cstmt.close();
con.close();
long end = System.currentTimeMillis();
System.out.println(end-start);
return result;