【发布时间】：2022-01-15 19:49:16
【问题描述】：
**Flight.java**
```package com.shahbaz.flightreservation.entities;
import java.sql.Timestamp;
import java.util.Date;
import javax.persistence.Entity;
@Entity
public class Flight extends AbstractEntity {
private String flightNumber;
private String operatingAirlines;
private String departureCity;
private String arrivalCity;
private Date dateOfDeparture;
private Timestamp estimatedDepartureTime;
public String getFlightNumber() {
return flightNumber;
}
public void setFlightNumber(String flightNumber) {
this.flightNumber = flightNumber;
}
public String getOperatingAirlines() {
return operatingAirlines;
}
public void setOperatingAirlines(String operatingAirlines) {
this.operatingAirlines = operatingAirlines;
}
public String getDepartureCity() {
return departureCity;
}
public void setDepartureCity(String departureCity) {
this.departureCity = departureCity;
}
public String getArrivalCity() {
return arrivalCity;
}
public void setArrivalCity(String arrivalCity) {
this.arrivalCity = arrivalCity;
}
public Date getDateOfDeparture() {
return dateOfDeparture;
}
public void setDateOfDeparture(Date dateOfDeparture) {
this.dateOfDeparture = dateOfDeparture;
}
public Timestamp getEstimatedDepartureTime() {
return estimatedDepartureTime;
}
public void setEstimatedDepartureTime(Timestamp estimatedDepartureTime) {
this.estimatedDepartureTime = estimatedDepartureTime;
}
}```
**AbstractEntity**
```package com.shahbaz.flightreservation.entities;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.MappedSuperclass;
@MappedSuperclass
public class AbstractEntity {
@Id
@GeneratedValue(strategy=GenerationType.IDENTITY)
private Long id;
public Long getId() {
return id;
}
public void setId(Long id) {
this.id = id;
}
}```
**FlightRepository**
```package com.shahbaz.flightreservation.repos;
import java.util.Date;
import java.util.List;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.Query;
import org.springframework.data.repository.query.Param;
import com.shahbaz.flightreservation.entities.Flight;
public interface FlightRepository extends JpaRepository<Flight,Long> {
@Query("from Flight where departureCity=:departureCity and arrivalCity=:arrivalCity and dateOfDeparture=:dateOfDeparture")
List<Flight> findFlights(@Param("departureCity") String from, @Param("arrivalCity") String to,@Param("dateOfDeparture") Date departureDate);
}```
**FlightController**
```package com.shahbaz.flightreservation.controllers;
import java.util.Date;
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.format.annotation.DateTimeFormat;
import org.springframework.stereotype.Controller;
import org.springframework.ui.ModelMap;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestParam;
import com.shahbaz.flightreservation.entities.Flight;
import com.shahbaz.flightreservation.repos.FlightRepository;
@Controller
public class FlightController {
@Autowired
FlightRepository flightRepository;
@RequestMapping("/findFlights")
public String findFlights(@RequestParam("from") String from,@RequestParam("to") String to,
@RequestParam("departureDate") @DateTimeFormat(pattern="mm-dd-yyyy") Date departureDate,ModelMap modelMap)
{
List<Flight> flights=flightRepository.findFlights(from,to,departureDate);
modelMap.addAttribute("flights", flights);
return "displayFlights";
}
}```
**displayFlights.html**
```<!DOCTYPE HTML>
<html lang="en" xmlns:th="http://www.thymeleaf.org">
<head>
<meta http-equiv="Content-Type" content="text/html; charset=UTF-8">
<title>Flights</title>
</head>
<body>
<h2>Flights:</h2>
<table>
<tr>
<th>Airlines</th>
<th>Departure City</th>
<th>Arrival City</th>
<th>Departure Time</th>
</tr>
<tr th:each="flight: ${flights}">
<td th:text="${flight.operatingAirlines}"></td>
<td th:text="${flight.departureCity}"></td>
<td th:text="${flight.arrivalCity}"></td>
<td th:text="${flight.estimatedDepartureTime}"></td>
<td><a th:href="@{'showCompleteReservation?flightId='+${flight.id}}">Select</a></td>
</tr>
</table>
</body>
</html>```
application.properties
*spring.datasource.url=jdbc:mysql://localhost:3306/reservation?
useSSL=false&serverTimezone=CET&useLegacyDatetimeCode=false
spring.datasource.username=root
spring.datasource.password=root
server.servlet.context-path=/flightreservation
spring.jpa.show-sql=true*
我在控制台中收到查询，但在发送请求时输出未反映在 chrome 中
休眠：选择 flight0_.id 作为 id1_0_，flight0_.arrival_city 作为arrival_2_0_，flight0_.date_of_departure 作为date_of_3_0_，flight0_.departure_city 作为departur4_0_，flight0_.estimated_departure_time 作为estimate5_0_，flight0_.flight_number 作为flight_n6_0_，flight0_.operating_airlines 作为operating从航班 flight0_ where flight0_.departure_city=?和 flight0_.arrival_city=?和 flight0_.date_of_departure=? 我正在搜索数据库中可用的数据，日期格式也适合 dateOfDeparture
【问题讨论】：
-
你不能给
from、to和departureTime赋值 -
我正在使用 chrome 传递值：-from to 和 leaveDate 如果我不通过，那么我将如何从数据库中获取它们之间的航班可用性。如果你能详细说明
标签： java spring-boot hibernate thymeleaf