Code ví dụ hiển thị List, Set, Map với Thymeleaf

Posted on by cuongth

Code ví dụ hiển thị List, Set, Map với Thymeleaf

Code ví dụ hiển thị danh sách, collection (List, Set, Map) với Spring + Thymeleaf

Để hiển thị danh sách với Thymeleaf, ta sử dụng thẻ th:each

Ví dụ:

<ul th:if="${listUser != null && !listUser.empty}">
    <li th:each="user: ${listUser}" th:text="${user.name}"></li>
</ul>

Hiển thị List, Set, Map với Thymeleaf

Các công nghệ sử dụng trong bài viết này

  • Spring 5.0.2.RELEASE
  • Thymeleaf 3.0.9.RELEASE
  • Thymeleaf-spring5 3.0.9.RELEASE
  • Maven
  • JDK 1.8

Tạo Maven Project

Code ví dụ hiển thị List, Set, Map với Thymeleaf

 

Thư viện sử dụng:

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>
  <groupId>stackjava.com</groupId>
  <artifactId>SpringThymeleafDisplayCollection</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>

  <properties>
    <spring.version>5.0.2.RELEASE</spring.version>
    <thymeleaf.version>3.0.9.RELEASE</thymeleaf.version>
  </properties>
  <dependencies>
    <!-- Spring -->
    <dependency>
      <groupId>org.springframework</groupId>
      <artifactId>spring-webmvc</artifactId>
      <version>${spring.version}</version>
    </dependency>
    <!-- Thymeleaf -->
    <dependency>
      <groupId>org.thymeleaf</groupId>
      <artifactId>thymeleaf</artifactId>
      <version>${thymeleaf.version}</version>
    </dependency>
    <dependency>
      <groupId>org.thymeleaf</groupId>
      <artifactId>thymeleaf-spring5</artifactId>
      <version>${thymeleaf.version}</version>
    </dependency>
  </dependencies>
</project>

File Spring config:

<?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"
  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-4.3.xsd">

  <context:component-scan base-package="stackjava.com.springthymeleaf" />

  <bean id="templateResolver"
    class="org.thymeleaf.spring5.templateresolver.SpringResourceTemplateResolver">
    <property name="prefix" value="/WEB-INF/templates/" />
    <property name="suffix" value=".html" />
    <property name="templateMode" value="HTML5" />
    <property name="cacheable" value="false" />
  </bean>

  <bean id="templateEngine" class="org.thymeleaf.spring5.SpringTemplateEngine">
    <property name="templateResolver" ref="templateResolver" />
  </bean>

  <bean class="org.thymeleaf.spring5.view.ThymeleafViewResolver">
    <property name="templateEngine" ref="templateEngine" />
  </bean>

</beans>

File 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_2_5.xsd"
  version="2.5">
  <display-name>SpringThymeleaf</display-name>

  <servlet>
    <servlet-name>spring-mvc</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
  </servlet>

  <servlet-mapping>
    <servlet-name>spring-mvc</servlet-name>
    <url-pattern>/</url-pattern>
  </servlet-mapping>
</web-app>

 File entities:

package stackjava.com.springthymeleaf.entities;

public class User {
  private int id;
  private String name;
  private String address;

  // getter - setter
}

File Controller:

package stackjava.com.springthymeleaf.controller;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.HashSet;
import java.util.List;
import java.util.Map;
import java.util.Set;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;

import stackjava.com.springthymeleaf.entities.User;

@Controller
public class BaseController {
  public List<User> initList() {
    List<User> listUser = new ArrayList<User>();
    listUser.add(new User(1, "Batman", "DC"));
    listUser.add(new User(2, "Super Woman", "DC"));
    listUser.add(new User(3, "Super Man", "DC"));
    return listUser;
  }

  public Set<User> initSet() {
    Set<User> setUser = new HashSet<User>();
    setUser.add(new User(4, "Iron Man", "Marvel"));
    setUser.add(new User(5, "Spider Man", "Marvel"));
    setUser.add(new User(6, "Ant Man", "Marvel"));
    return setUser;
  }

  public Map<Integer, User> initMap() {
    Map<Integer, User> mapUser = new HashMap<Integer, User>();
    mapUser.put(7, new User(7, "Mickey", "Disney"));
    mapUser.put(8, new User(8, "Donal", "Disney"));
    return mapUser;
  }

  @RequestMapping("/")
  public String index(final Model model) {
    model.addAttribute("listUser", this.initList());
    model.addAttribute("setUser", this.initSet());
    model.addAttribute("mapUser", this.initMap());
    return "index";
  }

}

File view:

<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">
<head>
<meta charset="UTF-8">
<title>Spring MVC + Thymeleaf</title>
</head>
<body>
  <h1>Spring MVC + Thymeleaf: Display Collection</h1>
  <h2>Display List:</h2>
  <ul th:if="${listUser != null && !listUser.empty}">
    <li th:each="user: ${listUser}" th:text="${user.id} + ' - ' +  ${user.name} + ' - ' +  ${user.address}"></li>
  </ul>
  <h2>Display Set:</h2>
  <ul th:if="${setUser != null && !setUser.empty}">
    <li th:each="user: ${listUser}" th:text="${user.id} + ' - ' +  ${user.name} + ' - ' +  ${user.address}"></li>
  </ul>
  <h2>Display Map:</h2>
  <ul th:if="${mapUser != null && !mapUser.empty}">
    <li th:each="element: ${mapUser}" th:text="${element.value.id} + ' - ' +  ${element.value.name} + ' - ' +  ${element.value.address}"></li>
    
    <!-- OR -->
    <!-- <li th:each="user: ${mapUser.values()}" th:text="${user.id} + ' - ' +  ${user.name} + ' - ' +  ${user.address}"></li> -->
  </ul>

</body>
</html>

Demo:

Code vi du hien thi danh sach voi thymeleaf

Code ví dụ hiển thị List, Set, Map với Thymeleaf

Okay, Done!
Download code ví dụ trên tại đây

 

References:

http://www.thymeleaf.org/doc/tutorials/3.0/usingthymeleaf.html

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