java调用储存过程的方法

public static Integer getStock(String strdate, Long orgId, Long productId){

if(strdate==null||orgId==null||productId==null)

throw new IllegalArgumentException();

Integer stock = null;

//DataAccess da = DataAccessFactory.create(BPMConstant.ERP_DATABASE);

Connection conn=null;

CallableStatement fun = null;

try {

String callSQL = "{?=call getstock(?,?,?)} ";

//Connection conn = da.getConnection();

conn=DBUtil.getConnection(BPMConstant.ERP_DATABASE);

fun = conn.prepareCall(callSQL);

fun.registerOutParameter(1, oracle.jdbc.OracleTypes.NUMBER);

fun.setString(2, strdate);

fun.setLong(3, orgId);

fun.setLong(4, productId);

fun.execute();

stock = fun.getInt(1);

}catch(Exception e){

e.printStackTrace();

}finally{

DBUtil.closeCallableStatement(fun);

DBUtil.closeConnection(conn);

}

return stock;

}