thymeleaf 模板在 chrome 中發送請求時沒有得到所有響應，我正在從數據庫接收數據綁定是否有任何錯誤？

Question

航班

package com.shahbaz.flightreservation.entities;

import java.sql.Timestamp;
import java.util.Date;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Temporal;
import javax.persistence.TemporalType;
@Entity
public class Flight extends AbstractEntity {

    private String flightNumber;
    private String operatingAirlines;
    private String departureCity;
    private String arrivalCity;
    @Temporal(TemporalType.DATE)
    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;
    }
    
}

抽象實體

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;
    }
}

飛行存儲庫

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 org.springframework.format.annotation.DateTimeFormat;
import org.springframework.stereotype.Repository;

import com.shahbaz.flightreservation.entities.Flight;
@Repository
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);
    @Query("from Flight where id=:id")
    Flight findOne(@Param("id") Long flightId);
    
    
}

預訂控制器

package com.shahbaz.flightreservation.controllers;

import java.util.Optional;

import org.springframework.beans.factory.annotation.Autowired;
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 ReservationController {

    @Autowired
    FlightRepository flightRepository;
    
    @RequestMapping("/showCompleteReservation")
    public String showCompleteReservation(@RequestParam("flightId") Long flightId,ModelMap modelMap)
    {
        System.out.println("Welcome Home");
        Flight flight = flightRepository.findOne(flightId);
        modelMap.addAttribute("flights", flight);
        System.out.println(flight.getArrivalCity());
        System.out.println(flight.getDepartureCity());
        return "completeReservation";
    }
    
}

完成預訂

 <:DOCTYPE HTML> <html lang="en" xmlns:th="http.//www.thymeleaf;org"> <head> <meta http-equiv="Content-Type" content="text/html: charset=UTF-8"> <title>Complete Reservation</title> </head> <body> <h2>Complete Reservation</h2> Airline: <span th.text="${flight:operatingAirlines}"> <br/> Departure City: <span th.text="${flight:departureCity}"><br/> Arrival City:<spanp th.text="${flight:arrivalCity}"><br/> <form action="completeReservation" method="post"> <pre> <h2>Passenger Details:</h2> First Name:<input type="text" name="passengerFirstName"/> Last Name:<input type="text" name="passengerLastName"/> Email:<input type="text" name="passengerEmail"/> Phone:<input type="text" name="passengerPhone"/> <h2>Card Details:</h2> Name on the card:<input type="text" name="nameOnTheCard"/> Card No:<input type="text" name="cardNumber"/> Expiry Date:<input type="text" name="expirationDate"/> Three Digit Sec Code:<input type="text" name="securityCode"/> <input type="hidden" name="flightId" th.value="${flight.id}"/> <input type="submit" value="confirm"/> </pre> </form> </body> </html>

在調試代碼時，我正在從數據庫中獲取值但是在 chrome 中發送請求時我沒有獲取所有值。我只獲取航空公司值。如果有人可以幫助我找出我嘗試過但無法提出解決方案的錯誤我是 thymeleaf 的新手

Answer 1

您正在將flight實例添加到 model 的flights鍵下，而在 Thymeleaf 模板中，您使用${flight....} 。

改變這個：

modelMap.addAttribute("flights", flight);

至

modelMap.addAttribute("flight", flight);

應該有幫助。