JSF Web 应用开发实战源码

package forum6; import java.util.ArrayList; import java.util.Calendar; import java.util.Collection; import java.util.Collections; import java.util.Date; import java.util.List; import java.util.Locale; import java.util.TimeZone; import javax.persistence.EntityManager; import javax.persistence.EntityManagerFactory; import javax.persistence.NoResultException; import javax.persistence.Persistence; import javax.persistence.Query; /** * * @author admin */ public class Business { private static Business instance = null; private Business() { } public static Business getInstance() { if (null == instance) { instance = new Business(); } return instance; } //** Creates a new instance of Business */ public void close() { instance = null; } /* * 业务逻辑方法：用户注册 */ public UserT register( String userName, String password, String passwordConfirm, String nickName) throws ApplicationException { // 参数检查 if (null == userName || null == nickName || null == password || null == passwordConfirm) { throw new ApplicationException("InputRequired"); } // 确保用户名合法 if (userName.length() < 1 || userName.length() > 10 || nickName.length() < 1 || nickName.length() > 10) { throw new ApplicationException("NameInvalid"); } EntityManagerFactory emf = null; EntityManager em = null; try { emf = Persistence.createEntityManagerFactory("forum6PU"); em = emf.createEntityManager(); // 检查用户名是否被占用 Query query = em.createNamedQuery("UserT.findByUserName"); query.setParameter("userName", userName); try { query.getSingleResult(); throw new ApplicationException( "UserNameNotAvailable", userName); } catch (NoResultException ex) { } // 检查昵称是否被占用 query = em.createNamedQuery("UserT.findByNickName"); query.setParameter("nickName", nickName); try { query.getSingleResult(); throw new ApplicationException( "NickNameNotAvailable", nickName); } catch (NoResultException ex) { } // 确保密码合法 if (password.length() < 1 || password.length() > 20 || passwordConfirm.length() < 1 || passwordConfirm.length() > 20) { throw new ApplicationException("PasswordInvalid"); } // 确保密码和密码确认相同 if (!password.equals(passwordConfirm)) { throw new ApplicationException( "PasswordNotConfirmed"); } // 添加注册用户 UserT user = new UserT(); user.setUserName(userName); user.setNickName(nickName); user.setPassword(password); user.setIsAdmin(0); user.setIsLocked(0); user.setIsOnline(0); em.getTransaction().begin(); em.persist(user); em.getTransaction().commit(); return user; } finally { // 回滚 if (em.getTransaction().isActive()) { em.getTransaction().rollback(); } em.close(); emf.close(); } } /* * 业务逻辑方法：封闭指定用户 */ public void lock(UserT aOperator, UserT aUser) throws ApplicationException { if (null == aOperator) { throw new ApplicationException("NullParameter", "operator"); } if (null == aUser) { throw new ApplicationException("NullParameter", "user"); } EntityManagerFactory emf = null; EntityManager em = null; try { emf = Persistence.createEntityManagerFactory("forum6PU"); em = emf.createEntityManager(); // 确保操作者和用户存在 UserT operator = this.findUser(em, aOperator); UserT user = this.findUser(em, aUser); // 确保操作者在线 onlineVerify(operator); // 权限验证，确保操作者是管理员 adminVerify(operator); // 确保拟封闭用户未被封闭 unlockedVerify(user); // 如果已封闭用户在线，强制其退出（即下线） if (1 == user.getIsOnline()) { try { forceLogout(operator, user); } catch (ApplicationException ex) { throw new ApplicationException( ex, "ForceLogoutFailure", operator.getNickName(), user.getNickName()); // 强制用户退出时失败 } } // 封闭用户 em.getTransaction().begin(); user.setIsLocked(1); em.getTransaction().commit(); } finally { // 回滚 if (em.getTransaction().isActive()) { em.getTransaction().rollback(); } em.close(); emf.close(); } } /* * 业务逻辑方法：解封用户 */ public void unlock(UserT aOperator, UserT aUser) throws ApplicationException { if (null == aOperator) { throw new ApplicationException("NullParameter", "operator"); } if (null == aUser) { throw new ApplicationException("NullParameter", "user"); } EntityManagerFactory emf = null; EntityManager em = null; try { emf = Persistence.createEntityManagerFactory("forum6PU"); em = emf.createEntityManager(); // 确保操作者和用户存在 UserT operator = this.findUser(em, aOperator); UserT user = this.findUser(em, aUser); // 确保操作者在线 onlineVerify(operator); // 权限验证，确保操作者是管理员 adminVerify(operator); // 确保用户处于封闭状态 lockedVerify(user); // 解封用户 em.getTransaction().begin(); user.setIsLocked(0); em.getTransaction().commit(); } finally { // 回滚 if (em.getTransaction().isActive()) { em.getTransaction().rollback(); } em.close(); emf.close(); } } /* * 业务逻辑方法：用户登录 */ public UserT login(String userName, String password) throws ApplicationException { if (null == userName || null == password) { throw new ApplicationException("InputRequired"); } EntityManagerFactory emf = null; EntityManager em = null; try { emf = Persistence.createEntityManagerFactory("forum6PU"); em = emf.createEntityManager(); // 确保用户名和密码正确 Query query = em.createQuery("select u from UserT u " + "where u.userName = :userName and u.password = :password"); query.setParameter("userName", userName); query.setParameter("password", password); UserT user = null; try { user = (UserT) query.getSingleResult(); } catch (NoResultException ex) { } if (null == user) { throw new ApplicationException( "UserNamePasswordWrong"); } // 用户名或者密码错 // 确保�