java servlet 調用oracle數據庫存儲過程

servlet首先創建數據庫鏈接類ConnectFactory：

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
import javax.naming.InitialContext;
import javax.sql.DataSource;

public class ConnectFactory {
	private  Connection conn;
	private  DataSource connnectionPool;
        
        //連接中間件的鏈接池
	public ConnectFactory(){
	    try {
	      InitialContext ctx = new InitialContext();
	      connnectionPool = (DataSource) ctx.lookup("PaymentDS");
	    }
	    catch (Exception e) {
	    	e.printStackTrace();
	    }
	} 
	
        //得到鏈接池的連接對象
	public  Connection getConn() throws Exception {
	    try {
	      conn=connnectionPool.getConnection();
	      return conn;
	    }
	    catch (SQLException sqle) {
	      throw new Exception();
	    }
	  }
	
	static{
		try{
			Class.forName("oracle.jdbc.driver.OracleDriver");
		}catch(ClassNotFoundException e){
			throw new ExceptionInInitializerError(e);
		}
	}
	
        //得到手寫連接字符串的連接
	public static Connection getConnection() throws SQLException{
		return DriverManager.getConnection("jdbc:oracle:thin:@192.168.2.37:1521:sdecp","eca","errors");
	}

}

外部調用連接：

public Map getBusinessB2ADeal(String b2aNo) throws Exception{
		Map res = null;
		Connection con = ConnectFactory.getConnection();
//		Connection con = new ConnectFactory().getConn();
		CallableStatement cs = con.prepareCall("{call proc_business_b2aNo(?,?,?,?,?,?)}");
		cs.setString("b2aNo", b2aNo);
		cs.registerOutParameter("b2aBank", Types.VARCHAR);
		cs.registerOutParameter("b2aAmount", Types.DOUBLE);
		cs.registerOutParameter("b2aType", Types.VARCHAR);
		cs.registerOutParameter("b2aNotify", Types.VARCHAR);
		cs.registerOutParameter("b2aBill", Types.VARCHAR);
		cs.execute();
		
		String b2aBank = cs.getString("b2aBank");
	        String b2aAmount = cs.getString("b2aAmount");
		String b2aType = cs.getString("b2aType");
		String b2aNotify = cs.getString("b2aNotify");
		String b2aBill = cs.getString("b2aBill");
	    
	    if(!StringUtils.isEmpty(b2aBank)){
	    	res = new HashMap();
	    	res.put("bankId", b2aBank);
	    	res.put("amount", b2aAmount);
	    	res.put("b2aType", b2aType);
	    	res.put("b2aNotify", b2aNotify);
	    	res.put("b2aBill", b2aBill);
	    }
	    cs.close();
	    con.close();
	    return res;
	}

存儲過程：

CREATE OR REPLACE PROCEDURE proc_business_b2aNo(
  b2aNo in varchar2,
  b2aBank out varchar2,
  b2aAmount out NUMBER,
  b2aType out varchar2,
  b2aNotify out varchar2,
  b2aBill out varchar2
)
IS
BEGIN
  SELECT tb2a.b2a_bank,tb2a.b2a_amount,tb2a.b2a_Type,tb2a.b2a_NOTIFY,tb2a.b2a_Bill
       INTO b2aBank,b2aAmount,b2aType,b2aNotify,b2aBill
  FROM t_b2a tb2a WHERE tb2a.b2a_no = b2aNo;
   EXCEPTION
     WHEN NO_DATA_FOUND THEN
       NULL;
     WHEN OTHERS THEN
       -- Consider logging the error and then re-raise
       RAISE;
END proc_business_b2aNo;