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Update UpdateTrainServlet.java

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pght2c95q 8 months ago
parent c1eb3140ef
commit 4306e37cff
1 changed files with 90 additions and 72 deletions
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162
ticketing-master/src/com/cn/servlet/UpdateTrainServlet.java
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@ -15,82 +15,100 @@ import com.cn.service.impl.TrainServiceImpl;
/**
*
* @ClassName: UpdateTrainServlet
* @Description: 管理员 修改车次信息
* @Description: 管理员修改车次信息的Servlet
* @author: ljy
* @date: 2019年11月10日 下午11:49:16
*/
public class UpdateTrainServlet extends HttpServlet {
private static final long serialVersionUID = 1L;
private static final long serialVersionUID = 1L;
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
/**
* 将需要修改的车次信息输出到界面
*/
Integer trainId = Integer.valueOf(request.getParameter("trainId"));
TrainService trainService = new TrainServiceImpl();
Train train = trainService.getById(trainId);
//开车时间与到站时间格式转换为"yyyy-MM-ddThh:mm"，不然jsp界面无法显示出默认时间
String startTime = train.getStartTime();
startTime = startTime.substring(0, 10)+"T"+startTime.substring(11, 16);
train.setStartTime(startTime);
String endTime = train.getEndTime();
endTime = endTime.substring(0, 10)+"T"+endTime.substring(11, 16);
train.setEndTime(endTime);
request.setAttribute("train", train);
request.getRequestDispatcher("pages/admin/right/updateTrain.jsp").forward(request, response);
}
/**
* 处理GET请求的方法。
* 当客户端发送GET请求到此Servlet时，这个方法会被调用。
* @param request HttpServletRequest对象，包含客户端请求信息。
* @param response HttpServletResponse对象，用于发送响应到客户端。
* @throws ServletException 可能抛出的Servlet异常。
* @throws IOException 可能抛出的IO异常。
*/
protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
/**
* 将需要修改的车次信息输出到界面
*/
// 从请求中获取车次ID参数，并转换为Integer类型
Integer trainId = Integer.valueOf(request.getParameter("trainId"));
// 创建TrainService的实现类对象，用于访问车次相关的业务逻辑
TrainService trainService = new TrainServiceImpl();
// 根据车次ID获取车次对象
Train train = trainService.getById(trainId);
// 开车时间与到站时间格式转换为"yyyy-MM-ddThh:mm"，以符合JSP界面的显示要求
String startTime = train.getStartTime();
startTime = startTime.substring(0, 10)+"T"+startTime.substring(11, 16);
train.setStartTime(startTime);
String endTime = train.getEndTime();
endTime = endTime.substring(0, 10)+"T"+endTime.substring(11, 16);
train.setEndTime(endTime);
// 将车次对象设置为request属性，以便在JSP页面中可以访问
request.setAttribute("train", train);
// 转发请求到修改车次信息的JSP页面
request.getRequestDispatcher("pages/admin/right/updateTrain.jsp").forward(request, response);
}
/**
* @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
/**
* 将修改后的车次信息保存到数据库，然后跳转到GetAllTrainServlet界面
*/
//获取界面中输入的数据
Integer trainId = Integer.valueOf(request.getParameter("trainId"));
String trainNumber = request.getParameter("trainNumber");
String startStation = request.getParameter("startStation");
String endStation = request.getParameter("endStation");
String startTime = request.getParameter("startTime");
startTime = startTime.substring(0, 10)+" "+startTime.substring(11)+":00";
String endTime = request.getParameter("endTime");
endTime = endTime.substring(0, 10)+" "+endTime.substring(11)+":00";
Integer price = Integer.valueOf(request.getParameter("price"));
Integer seatNumber = Integer.valueOf(request.getParameter("seatNumber"));
//从数据库中取出该车次信息，进行修改
TrainService trainService = new TrainServiceImpl();
Train train = trainService.getById(trainId);
train.setTrainNumber(trainNumber);
train.setStartStation(startStation);
train.setEndStation(endStation);
train.setStartTime(startTime);
train.setEndTime(endTime);
train.setPrice(price);
train.setSeatNumber(seatNumber);
//将数据存入数据库,并返回是否成功的结果
int recordNumber = trainService.update(train);
//根据返回值判断是否添加车次成功，返回1为成功
PrintWriter out = response.getWriter();
if(recordNumber == 1) {
out.write("<script>alert('修改成功！');"
+ "window.location.href='GetAllTrainServlet'</script>");
}else {
out.write("<script>alert('很抱歉,修改失败！');"
+ "window.location.href='GetAllTrainServlet'</script>");
}
out.close();
}
/**
* 处理POST请求的方法。
* 当客户端发送POST请求到此Servlet时，这个方法会被调用。
* @param request HttpServletRequest对象，包含客户端请求信息。
* @param response HttpServletResponse对象，用于发送响应到客户端。
* @throws ServletException 可能抛出的Servlet异常。
* @throws IOException 可能抛出的IO异常。
*/
protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
/**
* 将修改后的车次信息保存到数据库，然后跳转到GetAllTrainServlet界面
*/
// 获取界面中输入的数据
Integer trainId = Integer.valueOf(request.getParameter("trainId"));
String trainNumber = request.getParameter("trainNumber");
String startStation = request.getParameter("startStation");
String endStation = request.getParameter("endStation");
String startTime = request.getParameter("startTime");
startTime = startTime.substring(0, 10)+" "+startTime.substring(11)+":00";
String endTime = request.getParameter("endTime");
endTime = endTime.substring(0, 10)+" "+endTime.substring(11)+":00";
Integer price = Integer.valueOf(request.getParameter("price"));
Integer seatNumber = Integer.valueOf(request.getParameter("seatNumber"));
// 从数据库中取出该车次信息，进行修改
TrainService trainService = new TrainServiceImpl();
Train train = trainService.getById(trainId);
train.setTrainNumber(trainNumber);
train.setStartStation(startStation);
train.setEndStation(endStation);
train.setStartTime(startTime);
train.setEndTime(endTime);
train.setPrice(price);
train.setSeatNumber(seatNumber);
// 将数据存入数据库，并返回是否成功的结果
int recordNumber = trainService.update(train);
// 根据返回值判断是否添加车次成功，返回1为成功
PrintWriter out = response.getWriter();
if(recordNumber == 1) {
// 如果成功，弹出提示并跳转到所有车次的Servlet
out.write("<script>alert('修改成功！');"
+ "window.location.href='GetAllTrainServlet'</script>");
} else {
// 如果失败，弹出提示并跳转到所有车次的Servlet
out.write("<script>alert('很抱歉,修改失败！');"
+ "window.location.href='GetAllTrainServlet'</script>");
}
// 关闭PrintWriter对象
out.close();
}
}
}
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