一章StrutsHibernateSpring.pptVIP

17.3.4 编写DAO接口及实现类 StudentDao接口的实现类StudentDaoImpl.java代码为： ?package org.dao.impl; import java.util.List; import org.dao.StudentDao; import org.springframework.orm.hibernate3.support.HibernateDaoSupport; import org.vo.Student; public class StudentDaoImpl extends HibernateDaoSupport implements StudentDao{ public Student selectStudent(String readerId) { List list=this.getHibernateTemplate().find(from Student where readerId=?,readerId); Student student=null; if(list.size()0) student=(Student) list.get(0); return student; } } 17.3.4 编写DAO接口及实现类 “借书”接口LendDao.java的代码为： ?package org.dao; import java.util.List; import org.vo.Book; import org.vo.Lend; import org.vo.Student; public interface LendDao { //分页查询指定借书证号的读者所借图书的信息 public List selectBook(String readerId,int pageNow,int pageSize); //查询指定借书证号的读者所借图书的总数 public int selectBookSize(String readerId); //借书 public void addLend(Lend lend,Book book,Student student); //根据图书ID查询Lend信息 public Lend selectByBookId(String bookId); //根据图书ISBN查询Lend信息 public Lend selectByBookISBN(String ISBN); } LendDao接口的实现类LendDaoImpl.java代码为。 17.3.5 编写业务逻辑接口及实现类 “登录”的业务逻辑接口LoginService.java为： ?package org.service; import org.vo.Login; public interface LoginService { public Login checkLogin(String username,String password); } 17.3.5 编写业务逻辑接口及实现类 LoginService的实现类LoginServiceImpl.java为： ?package org.service.impl; import org.dao.LoginDao; import org.service.LoginService; import org.vo.Login; public class LoginServiceImpl implements LoginService{ private LoginDao loginDao; public Login checkLogin(String username, String password) { return loginDao.checkLogin(username, password); } public LoginDao getLoginDao() { return loginDao; } public void setLoginDao(LoginDao loginDao) { this.loginDao = loginDao; } } ? 17.3.5 编写业务逻辑接口及实现类 “图书”的业务逻辑接口BookService.java为： ?package org.service; import java.util.List; import org.vo.Book; public interface BookService { //查询图书信息 public Bo