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package com.gym.user.service;
import java.util.List;
import com.gym.model.UserModel;
public interface UserService {
/**
* 根据用户id查询用户信息
*
* @return
*/
public UserModel queryUserInfoById(String uId);
/**
* 根据用户名查询用户信息
*
* @return
*/
public UserModel queryUserInfoByName(String uName);
/**
* 修改用户信息
*
* @param userModel
* @return
*/
public int alterUserInfo(UserModel userModel);
/**
* 修改用户密码
*
* @param userModel
* @return
*/
public int alterUserPwd(UserModel userModel, String oldPwd, String newPwd1,
String newPwd2);
/**
* 查询我的预约
*
* @return
*/
public List queryMyBook(UserModel userModel);
/**
* 查询我的租借
*
* @param userModel
* @return
*/
public List queryMyRent(UserModel userModel);
}
上面是UserService的接口，该接口具有根据用户id查询用户信息，根据用户名查询用户信息，修改用户信息，修改用户密码，查询我的预约，查询我的器材租借 6个功能。下面是这个接口的实现类：package com.gym.user.service.impl;
import java.util.List;
import com.gym.dao.impl.UserDaoImpl;
import com.gym.model.UserModel;
import com.gym.user.service.UserService;
import com.gym.utils.Constant;
import com.gym.utils.Md5;
public class UserServiceImpl implements UserService {
public UserModel queryUserInfoById(String uId) {
// TODO Auto-generated method stub
UserDaoImpl userDaoImpl = new UserDaoImpl();
return userDaoImpl.queryUserById(uId);
}
public UserModel queryUserInfoByName(String uName) {
// TODO Auto-generated method stub
UserDaoImpl userDaoImpl = new UserDaoImpl();
return userDaoImpl.queryUserByName(uName);
}
public int alterUserInfo(UserModel userModel) {
// TODO Auto-generated method stub
UserDaoImpl userDaoImpl = new UserDaoImpl();
if (userDaoImpl.alterUser(userModel) == 1) {
return Constant.SUCCESS;
} else {
return Constant.ERROR;
}
}
/**
* 修改用户密码
*
* @param userModel
* @param oldPwd
* 旧密码
* @param newPwd1
* 新密码1
* @param newPwd2
* 新密码2
* @return
*/
public int alterUserPwd(UserModel userModel, String oldPwd, String newPwd1,
String newPwd2) {
// TODO Auto-generated method stub
UserDaoImpl userDaoImpl = new UserDaoImpl();
// 验证旧密码
if (!Md5.encryption(oldPwd).equals(
userDaoImpl.queryUserById(userModel.getuId()).getuPassword())) {
return Constant.USERPWDERROR;
}
if (!newPwd1.equals(newPwd2)) {
return Constant.PASSWORDDIFFER;
}
userModel.setuPassword(Md5.encryption(newPwd1));
if (userDaoImpl.alterUserPwd(userModel) == 1) {
return Constant.SUCCESS;
} else {
return Constant.ERROR;
}
}
public List queryMyBook(UserModel userModel) {
// TODO Auto-generated method stub
UserDaoImpl userDaoImpl = new UserDaoImpl();
return (List) userDaoImpl.queryMyBook(userModel);
}
public List queryMyRent(UserModel userModel) {
// TODO Auto-generated method stub
UserDaoImpl userDaoImpl = new UserDaoImpl();
return (List) userDaoImpl.queryMyRent(userModel);
}
}
这里的增、删、改操作也用到了Constant常量工具类，能直观地传递操作状态；而查询操作一般是返回List对象，里面封装了查询数据集合，前端模版可以通过<c:foreach>标签遍历。 public int bookGround(GroundBookModel groundBookModel,
GroundModel groundModel) {
// TODO Auto-generated method stub
CompareUtil compareUtil = new CompareUtil();
// 验证起始时间是否大于结束时间
if (compareUtil.compareDateTime(groundBookModel.getbStartTime(),
groundBookModel.getbEndTime(), "yyyy-MM-dd HH:mm") >= 0) {
return Constant.TIMEERROR;
}
// ------------------待开发（惩罚规则）--------------------
// 判断用户是否被冻结
// ------------------待开发（惩罚规则）--------------------
// 检测场地是否存在并有效
if (groundModel.getgId().equals("") || groundModel.getgStatus() == "0") {
return Constant.GROUNDINVALID;
}
// 检测场地此时间段是否空闲
GroundbookDaoImpl groundbookDaoImpl = new GroundbookDaoImpl();
List groundBookList = groundbookDaoImpl.queryByTime(
groundBookModel.getbStartTime(), groundBookModel.getbEndTime());
if (groundBookList.size() != 0) {
return Constant.TIMECLASH;
}
// 计算费用
groundBookModel.setbFee(new CalculationUitl().calculaBookMoney(
groundBookModel, groundModel) + "");
if (groundbookDaoImpl.addGroundbook(groundBookModel) == 1) {
return Constant.SUCCESS;
} else {
return Constant.ERROR;
}
}
时间比较器封装在CompareUtil工具类中，用于验证起始时间是否大于结束时间，防止用户输入错误。实现代码如下： /**
* 比较时间日期先后 格式例子：2012-12-30 11:30
*
* @param begin
* @param end
* @return begin在end前返回负数；begin在end后返回正数；格式错误或时间相等返回0
*/
public long compareDateTime(String begin, String end, String format) {
DateFormat df = new SimpleDateFormat(format);
try {
Date d1 = df.parse(begin);
Date d2 = df.parse(end);
long diff = d1.getTime() - d2.getTime();
return diff;
} catch (Exception e) {
}
return 0; }
计算总金额方法封装在CalculationUitl工具类中，用于根据预定小时数计算金额，不足一小时按一小时计。实现代码如下： /**
* 按预定小时数计算金额，不足一小时按一小时计
*
* @param groundBookModel
* @param groundModel
* @return
*/
public float calculaBookMoney(GroundBookModel groundBookModel,
GroundModel groundModel) {
DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm");
Date begin = null;
Date end = null;
try {
begin = dateFormat.parse(groundBookModel.getbStartTime());
end = dateFormat.parse(groundBookModel.getbEndTime());
} catch (ParseException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
long l = end.getTime() - begin.getTime();
long day = l / (24 * 60 * 60 * 1000);
long hour = (l / (60 * 60 * 1000) + (l % (60 * 60 * 1000) > 0 ? 1 : 0)); // 不足一小时按一小时计
float fee = Float.parseFloat(groundModel.getgFee()) * hour;
return fee;
}
package com.gym.user.service.impl;
import java.util.List;
import com.gym.dao.impl.EquipmentDaoImpl;
import com.gym.dao.impl.EquipmentRentDaoImpl;
import com.gym.model.EquipmentModel;
import com.gym.model.EquipmentRentModel;
import com.gym.model.UserModel;
import com.gym.user.service.EquipmentService;
import com.gym.utils.CalculationUitl;
import com.gym.utils.CompareUtil;
import com.gym.utils.Constant;
public class EquipmentServiceImpl implements EquipmentService {
public List queryEquipment() {
// TODO Auto-generated method stub
EquipmentDaoImpl equipmentDaoImpl = new EquipmentDaoImpl();
return equipmentDaoImpl.queryEquipment();
}
public EquipmentModel queryById(String eId) {
// TODO Auto-generated method stub
EquipmentDaoImpl equipmentDaoImpl = new EquipmentDaoImpl();
return equipmentDaoImpl.queryById(eId);
}
public EquipmentModel queryByName(String eName) {
// TODO Auto-generated method stub
return null;
}
public int rentEquipment(EquipmentRentModel equipmentRentModel,
EquipmentModel equipmentModel, UserModel userModel) {
// TODO Auto-generated method stub
EquipmentServiceImpl equipmentServiceImpl = new EquipmentServiceImpl();
equipmentModel = equipmentServiceImpl.queryById(equipmentRentModel
.geteId()); // 根据场地id查询
if (equipmentModel == null) { // 找不到此器材
return Constant.EQUIPMENTINVALID;
}
// 重新设置相关参数，防止某些参数被用户在前台篡改
equipmentRentModel.setBorrowFee(equipmentModel.geteFee());
equipmentRentModel.setStatus(equipmentModel.getStatus());
equipmentRentModel.setuId(userModel.getuId());
CompareUtil compareUtil = new CompareUtil();
// 验证起始时间是否大于结束时间
if (compareUtil.compareDateTime(equipmentRentModel.getBorrowBegin(),
equipmentRentModel.getBorrowEnd(), "yyyy-MM-dd HH:mm") >= 0) {
return Constant.TIMEERROR;
}
// ------------------待开发（惩罚规则）--------------------
// 判断用户是否被冻结
// ------------------待开发（惩罚规则）--------------------
// 检测器材此时间段是否空闲
EquipmentRentDaoImpl equipmentRentDaoImpl = new EquipmentRentDaoImpl();
List groundBookList = equipmentRentDaoImpl.queryByTime(
equipmentRentModel.getBorrowBegin(),
equipmentRentModel.getBorrowEnd());
if (groundBookList.size() != 0) {
return Constant.TIMECLASH;
}
// 查询该用户此时间段内是否有其他预定
// 计算费用
equipmentRentModel.setBorrowFee(new CalculationUitl().calculaRentMoney(
equipmentRentModel, equipmentModel) + "");
if (equipmentRentDaoImpl.addEquipmentRent(equipmentRentModel) == 1) {
return Constant.SUCCESS;
} else {
return Constant.ERROR;
}
}
}
验证时间是否正确和计算费用同样封装在CompareUtil和CalculationUitl工具类中。