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Le champ de sélection à cocher MVC Spring aide à sélectionner plusieurs options en même temps. Ce marqueur présente le marqueur d'entrée HTML de type checkbox.
<form:checkbox path="abc" value="element">/>
除了复选框标签，Spring MVC表单标签库还包含 复选框此标签用于呈现带有类型复选框的多个HTML输入标签。仅在您不想在视图页面中列出所有元素时使用此标签。在这种情况下，您可以在运行时提供元素并将其传递给标签。由于用户可以选择多个选项，因此需要传递Array，List或Map类型的元素。
<form:checkboxes path="abc" items="${object.elementList}"/><!-- https://mvnrepository.com/artifact/org.springframework/spring-webmvc --> <dependency> <groupId>org.springframework</groupId> <artifactId>spring-webmvc</artifactId> <version>5.1.1.RELEASE</version> </dependency> <!-- https://mvnrepository.com/artifact/javax.servlet/javax.servlet-api --> <dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>3.0-alpha-1</version> </dependency> <!-- https://mvnrepository.com/artifact/javax.servlet/jstl --> <dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version> </dependency> <!-- https://mvnrepository.com/artifact/org.apache.tomcat/tomcat-jasper --> <dependency> <groupId>org.apache.tomcat</groupId> <artifactId>tomcat-jasper</artifactId> <version>9.0.12</version> </dependency>
Reservation.java
package com.w3codebox;
public class Reservation {
private String firstName;
private String lastName;
private String Gender;
private String[] Food;
public Reservation()
{}}
}
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
public String getLastName() {}}
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
public String getGender() {
return Gender;
}
public void setGender(String gender) {
Gender = gender;
}
public String[] getFood() {
return Food;
}
public void setFood(String[] food) {
Food = food;
}
}
ReservationController.java
package com.w3codebox;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;
@RequestMapping("/reservation")
@Controller
public class ReservationController {
@RequestMapping("/bookingForm())
public String bookingForm(Model model)
{}}
//create a reservation object
Reservation res = new Reservation();
//provide reservation object to the model
model.addAttribute("reservation", res);
return "reservation-page";
}
@RequestMapping("/submitForm())
public String submitForm(@ModelAttribute("reservation") Reservation res)
{}}
retourner "confirmation-form";
}
}
web.xml
<?xml version="1.0" encoding="UTF-8"?> <web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://java.sun.com/xml/ns/javaee" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd" id="WebApp_ID" version="3.0"> <display-name>SpringMVC</display-name> <servlet> <servlet-name>spring</servlet-name> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> <load-on-startup>1</load-on-startup> </servlet> <servlet-mapping> <servlet-name>spring</servlet-name> <url-pattern>/</url-pattern> </servlet-mapping> </web-app>
spring-servlet.xml
<?xml version="1.0" encoding="UTF-8"?> <beans xmlns="http://www.springframework.org/schema/beans" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:context="http://www.springframework.org/schema/context" xmlns:mvc="http://www.springframework.org/schema/mvc" xsi:schemaLocation=" http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd"> <!-- Fournir un soutien pour le balayage des composants --> <context:component-scan base-package="com.w3codebox" /> <!--Fournir un soutien pour la conversion, le formatage et la validation --> <mvc:annotation}}-driven/> <!-- Définir le résolveur de vue Spring MVC --> <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver"> <property name="prefix" value="/WEB-INF/jsp/></property> <property name="suffix" value=".jsp"></property> </bean> </beans>
index.jsp
<!DOCTYPE html> <html> <head> <title>Formulaire d'enregistrement de chemin de fer</title> </head> <body> <a href="reservation/bookingForm">Cliquez ici pour la réservation.</a> </body> </html>
reservation-page.jsp
<%@ taglib prefix="form" uri="http://www.springframework.org/tags/form" %> <!DOCTYPE html> <html> <head> <title>Formulaire de réservation</title> </head> <h3>Formulaire de réservation de chemin de fer</h3> <body> <form:form action="submitForm" modelAttribute="reservation"> Prénom: <form:input path="firstName" /> <br><br> Nom: <form:input path="lastName" /> <br><br> Sexe: Masculin<form:radiobutton path="Gender" value="Masculin"/> Féminin<form:radiobutton path="Gender" value="Féminin"/> <br><br> Repas: Petit-déjeuner<form:checkbox path="Food" value="Petit-déjeuner"/> Déjeuner<form:checkbox path="Food" value="Déjeuner"/> Dîner<form:checkbox path="Food" value="Dîner"}/> <br><br> <input type="submit" value="Soumettre" /> </form:form> </body> </html>
confirmation-page.jsp
<%@taglib prefix="c" uri="http://java.sun.com/jsp/jstl/core"%>
<!DOCTYPE html>
<html>
<body>
<p Votre réservation est confirmée avec succès. Veuillez, re-Vérifiez les détails.</p>
Prénom: ${reservation.firstName} <br>
Nom de famille: ${reservation.lastName} <br>
Sexe: ${reservation.gender}<br>
Repas:
<ul>
<c:forEach var="meal" items="${reservation.food}">
<li>${meal}</li>
</c:forEach>
</ul>
</body>
</html>
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