sqljdbc&;Java JUnit测试失败
我正在尝试在我的类CreditCardDaoImpl上运行JUnit测试(CreditcardDAOTest)。我一直收到错误sqljdbc&;Java JUnit测试失败,java,sql,Java,Sql,我正在尝试在我的类CreditCardDaoImpl上运行JUnit测试(CreditcardDAOTest)。我一直收到错误“java.sql.SQLException:没有为参数2指定值”,但我认为没有两个参数。 如蒙协助,将不胜感激。我认为错误来自于“ps.setLong(1,customerID);”我假设应该有一个“ps.setLong(x,x);“但我不知道应该是什么。我尝试过调试,它似乎应该是我语句的名称条目: final static String retrieveForCust
“java.sql.SQLException:没有为参数2指定值”
,但我认为没有两个参数。
如蒙协助,将不胜感激。我认为错误来自于“ps.setLong(1,customerID);”
我假设应该有一个“ps.setLong(x,x);“
但我不知道应该是什么。我尝试过调试,它似乎应该是我语句的名称条目:
final static String retrieveForCustomerID =
"SELECT name = ?, cc_number = ?, exp_date = ?, security_code = ?, WHERE customerID = ?;";
但我还是一点也不确定。请知道,我一直试图弄明白这一点有一段时间了,我只是在寻求指导
//Method in CreditCardDAOImpl
public CreditCard retrieveForCustomerID(Connection connection, Long customerID) throws SQLException, DAOException
{
if (customerID == null )
{
throw new DAOException("Trying to retrieve credit card with NULL customerID");
}
PreparedStatement ps = null;
try
{
ps = connection.prepareStatement(retrieveForCustomerID);
ps.setLong(1, customerID);
ResultSet rs = ps.executeQuery();
CreditCard cc = new CreditCard();
cc.setName(rs.getString("name"));
cc.setCcNumber(rs.getString("cc_number"));
cc.setExpDate(rs.getString("exp_date"));
cc.setSecurityCode(rs.getString("security_code"));
return cc;
}
finally
{
}
}
//Method in CreditCardDAOTest
@Test
public void testRetrieveForCustomerID() throws Exception
{
DataSource ds = DataSourceManager.getDataSource();
Connection connection = ds.getConnection();
CreditCardDAO dao = new CreditCardDaoImpl();
CreditCard ccard = dao.retrieveForCustomerID(connection, customerID);
assertNotNull(ccard);
assertNotNull(ccard.getCcNumber());
assertNotNull(ccard.getExpDate());
assertNotNull(ccard.getName());
assertNotNull(ccard.getSecurityCode());
connection.close();
}
使用rs.next()
,您的查询应该如下所示
final static String retrieveForCustomerID =
"SELECT name, cc_number, exp_date, security_code from TABLE_NAME WHERE customerID = ?"
注意:将上述查询中的表名替换为实际表名
SELECT name, cc_number , exp_date, security_code FROM your_table_name WHERE customerID = ?
ps.setInt(), ps.setLong(), ps.setString().... etc.
rs.next()
迭代您的resultSet。您的意思是如果(!rs.next()){return null;}第一个更改是按如下方式更新查询,然后在将resultSet用作rs之前。
getXXX()
调用rs.next()。这应该有帮助,太好了!谢谢