问题描述 java继承问题,求大神帮忙解答 service.impl里面是这么写的 public class ServiceImpl implements Service{ private Dao dao; public String getDao(){ return dao.getDao(); } } 下面是dao的代码 public interface Dao { public String getDao(); } 下面是dao.impl代码 public class DaoImpl imp
问题描述 insert into语句可执行不报错就是添不进去.请大神帮忙解答 MYSQL m_sqlCon; mysql_init(&m_sqlCon); if(!mysql_real_connect(&m_sqlCon,"localhost","root","0412qwer","xscj",3306,NULL,0)) {AfxMessageBox(_T("数据库连接失败"));} els