springboot MVC

UF01-1844

Resources from spring.io

• Serving Web Content with Spring MVC
• Handling Form Submission
• Validating Form Input
• Securing a Web Application

Example: Reserves management

Dependencies

<dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

Model

public class Reservation {
   private int idUser;
   private int idPointCharge;
   private Date dateStart;
   private Date dateEnd;
   private Boolean accepted;

}

Repository

@Repository
public class ReservationRepository {
}

Services

public interface ReservationService {

    void reservationAdd(Reservation reservation);
    List<Reservation> getAllReservations() ;
    void reservationDelete(Reservation reservation);
    void reservationDeleteById(int reservationId);
    void reservationUpdate(int index,Reservation reservation);
    Reservation reservationDetail(int index);
    Reservation getReservationById(int index);
    Reservation getReservationsByIdUser(int idUser);

}

@Service
public class ReservationServiceImpl implements ReservationService{

    @Autowired
    private ReservationRepository reservationRepository;

// [.......]

}

Views

webpages

Annotacions used

• @Controller
• @GetMapping
• @PostMapping
• @RequestMapping

using dates

One approach is set date format in application.properties

spring.mvc.format.date=yyyy-MM-dd
spring.mvc.format.date-time=yyyy-MM-dd HH:mm:ss
spring.mvc.format.time=HH:mm:ss

Be careful with the mapping. html input type and property of attribute java class.

 Resolved [org.springframework.validation.BindException: org.springframework.validation.BeanPropertyBindingResult: 2 errors<EOL>Field error in object 'reservation' on field 'dateEnd': rejected value [13/12/2023];
 codes [typeMismatch.reservation.dateEnd,typeMismatch.dateEnd,typeMismatch.java.util.Date,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [reservation.dateEnd,dateEnd]; arguments [];
 default message [dateEnd]]; 
 default message [Failed to convert property value of type 'java.lang.String' to required type 'java.util.Date' for property 'dateEnd'; Failed to convert from type [java.lang.String] to type [java.util.Date] for value '13/12/2023']
 Field error in object 'reservation' on field 'dateStart': rejected value [12/12/2023];
 codes [typeMismatch.reservation.dateStart,typeMismatch.dateStart,typeMismatch.java.util.Date,typeMismatch]; arguments [org.springframework.context.support.DefaultMessageSourceResolvable: codes [reservation.dateStart,dateStart]; arguments []; default message [dateStart]];
 default message [Failed to convert property value of type 'java.lang.String' to required type 'java.util.Date' for property 'dateStart';
 Failed to convert from type [java.lang.String] to type [java.util.Date] for value '12/12/2023']]

  <input type="text" class="form-control" th:field="*{dateStart}" />

The correct html type is date, type=“date”

content of example on github

source

lab delivery Code (UF01-1844)