Quarkus + Qute CRUD example

Hello everyone, today we will learn how to develop a basic User Management Application using Quarkus, Qute template and RDBMS.
The GitHub repository link is provided at the end of this tutorial. You can download the source code.

The following technologies stack being used:

  • Quarkus 2.2.3.Final
  • Hibernate 5.5.7.Final
  • Maven 3
  • JDK 11
  • Qute 2.2.3.Final
  • H2DB 

After completing this tutorial what we will build? 

We will build a full-stack web application  with CRUD features:
• Create User
• List User
• Update User 
• Delete User 

User Interface

Add User

Retrieve All Users

Update User


Final Project Directory



Maven[pom.xml]

A Project Object Model or POM is the fundamental unit of work in Maven. It is an XML file that contains information about the project and configuration details utilized by Maven to build the project.
If you want to use Qute you need to add the quarkus-resteasy-qute extension in your pom.xml file.
<?xml version="1.0" encoding="UTF-8"?>
<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>com.knf.dev</groupId>
   <artifactId>quarkus-qute-crud</artifactId>
   <version>1.0</version>

   <properties>
      <compiler-plugin.version>3.8.1</compiler-plugin.version>
      <maven.compiler.parameters>true</maven.compiler.parameters>
      <maven.compiler.source>11</maven.compiler.source>
      <maven.compiler.target>11</maven.compiler.target>
      <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
      <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
      <quarkus-plugin.version>2.2.3.Final</quarkus-plugin.version>
      <quarkus.platform.artifact-id>quarkus-universe-bom</quarkus.platform.artifact-id>
      <quarkus.platform.group-id>io.quarkus</quarkus.platform.group-id>
      <quarkus.platform.version>2.2.3.Final</quarkus.platform.version>
      <surefire-plugin.version>2.22.1</surefire-plugin.version>
   </properties>

   <dependencyManagement>
      <dependencies>
         <dependency>
            <groupId>${quarkus.platform.group-id}</groupId>
            <artifactId>${quarkus.platform.artifact-id}</artifactId>
            <version>${quarkus.platform.version}</version>
            <type>pom</type>
            <scope>import</scope>
         </dependency>
      </dependencies>
   </dependencyManagement>

   <dependencies>
      <dependency>
         <groupId>io.quarkus</groupId>
         <artifactId>quarkus-resteasy-jsonb</artifactId>
      </dependency>

      <dependency>
         <groupId>io.quarkus</groupId>
         <artifactId>quarkus-hibernate-orm</artifactId>
      </dependency>
       <dependency>
         <groupId>io.quarkus</groupId>
         <artifactId>quarkus-resteasy-qute</artifactId>
      </dependency>
      <dependency>
         <groupId>io.quarkus</groupId>
         <artifactId>quarkus-jdbc-h2</artifactId>
      </dependency>
      <dependency>
         <groupId>io.quarkus</groupId>
         <artifactId>quarkus-junit5</artifactId>
         <scope>test</scope>
      </dependency>
      <dependency>
         <groupId>io.rest-assured</groupId>
         <artifactId>rest-assured</artifactId>
         <scope>test</scope>
      </dependency>
   </dependencies>

   <build>
      <plugins>
         <plugin>
            <groupId>io.quarkus</groupId>
            <artifactId>quarkus-maven-plugin</artifactId>
            <version>${quarkus-plugin.version}</version>
            <executions>
               <execution>
                  <goals>
                     <goal>build</goal>
                  </goals>
               </execution>
            </executions>
         </plugin>
         <plugin>
            <artifactId>maven-compiler-plugin</artifactId>
            <version>${compiler-plugin.version}</version>
         </plugin>
         <plugin>
            <artifactId>maven-surefire-plugin</artifactId>
            <version>${surefire-plugin.version}</version>
            <configuration>
               <systemProperties>
<java.util.logging.manager>org.jboss.logmanager.LogManager</java.util.logging.manager>
               </systemProperties>
            </configuration>
         </plugin>
      </plugins>
   </build>

   <profiles>
      <profile>
         <id>native</id>
         <activation>
            <property>
               <name>native</name>
            </property>
         </activation>
         <build>
            <plugins>
               <plugin>
                  <artifactId>maven-failsafe-plugin</artifactId>
                  <version>${surefire-plugin.version}</version>
                  <executions>
                     <execution>
                        <goals>
                           <goal>integration-test</goal>
                           <goal>verify</goal>
                        </goals>
                        <configuration>
                           <systemProperties>
<native.image.path>${project.build.directory}/${project.build.finalName}-runner</native.image.path>
                           </systemProperties>
                        </configuration>
                     </execution>
                  </executions>
               </plugin>
            </plugins>
         </build>
         <properties>
            <quarkus.package.type>native</quarkus.package.type>
         </properties>
      </profile>
   </profiles>
</project>


application.properties

# datasource configuration
quarkus.datasource.db-kind = h2
quarkus.datasource.username = sa
# quarkus.datasource.password =
quarkus.datasource.jdbc.url = jdbc:h2:mem:test

# drop and create the database at startup (use `update` to only update the schema)
quarkus.hibernate-orm.database.generation=drop-and-create


Create the User Entity

package com.knf.dev;

import javax.persistence.*;
import java.io.Serializable;

@Table(name = "users")
@Entity
public class User implements Serializable {
   @Id
   @GeneratedValue(strategy = GenerationType.AUTO)
   private Long id;
   private String firstName;
   private String lastName;
   private String email;


   public User(Long id, String firstName, String lastName, String email) {
      super();
      this.id = id;
      this.firstName = firstName;
      this.lastName = lastName;
      this.email = email;
   }

   public Long getId() {
      return id;
   }

   public void setId(Long id) {
      this.id = id;
   }

   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 getEmail() {
      return email;
   }

   public void setEmail(String email) {
      this.email = email;
   }

   public User() {
      super();
   }

}


Create CRUD Repository

package com.knf.dev;

import javax.inject.Inject;
import javax.inject.Singleton;
import javax.persistence.EntityManager;
import javax.transaction.Transactional;
import java.util.List;

@Singleton
public class UserResource {

   @Inject
   EntityManager entityManager;

   public List<User> getUsers() {
      return entityManager.createQuery("SELECT c FROM User c").getResultList();
   }

   public User getUser(Long id) {
      return entityManager.find(User.class, id);
   }

   @Transactional(Transactional.TxType.REQUIRED)
   public User addUser(User user) {
      entityManager.persist(user);
      return user;
   }

   @Transactional(Transactional.TxType.REQUIRED)
   public void updateUser(User user) {
      entityManager.merge(user);
   }

   @Transactional(Transactional.TxType.REQUIRED)
   public void deleteUser(Long id) {
      User user = getUser(id);
      entityManager.remove(user);
   }
}


Create the UserEndPoint

package com.knf.dev;

import io.quarkus.qute.Template;
import io.quarkus.qute.TemplateException;
import io.quarkus.qute.TemplateInstance;
import javax.inject.Inject;
import javax.ws.rs.*;
import javax.ws.rs.core.MediaType;
import java.io.IOException;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

@Path("/")
public class UserEndpoint {

    @Inject
    Template home;

    @Inject
    Template createupdate;

    @Inject
    UserResource userResource;

    @GET
    @Produces(MediaType.TEXT_HTML)
    public TemplateInstance getAllUserView()
            throws TemplateException {
        List<User> users = userResource.getUsers();
        return home.data(Map.of("users", users));
    }

    @GET
    @Path("/create")
    @Produces(MediaType.TEXT_HTML)
    public TemplateInstance createUserView()
            throws TemplateException, IOException {
        User user = new User();
        Map<String, Object> obj = new HashMap<>();
        obj.put("user", user);
        obj.put("isUpdate", false);
        return createupdate.data(obj);
    }

    @POST
    @Produces(MediaType.TEXT_HTML)
    @Consumes(MediaType.APPLICATION_FORM_URLENCODED)
    @Path("/create")
    public TemplateInstance createUser
            (@FormParam("firstName") String firstName,
             @FormParam("lastName") String lastName,
             @FormParam("email") String email)
            throws TemplateException {
        User usr = new User();
        usr.setEmail(email);
        usr.setFirstName(firstName);
        usr.setLastName(lastName);
        userResource.addUser(usr);
        return getAllUserView();
    }

    @GET
    @Produces(MediaType.TEXT_HTML)
    @Path("/update/{id}")
    public TemplateInstance updateUser
            (@PathParam("id") Long id)
            throws TemplateException {
        User user = userResource.getUser(id);
        Map<String, Object> obj = new HashMap<>();
        obj.put("user", user);
        obj.put("isUpdate", true);
        return createupdate.data(obj);
    }

    @POST
    @Path("/update/{id}")
    @Produces(MediaType.TEXT_HTML)
    public TemplateInstance createUser
            (@FormParam("firstName") String firstName,
             @FormParam("lastName") String lastName,
             @FormParam("email") String email,
             @PathParam("id") Long id)
            throws TemplateException {
        User usr = new User();
        usr.setEmail(email);
        usr.setFirstName(firstName);
        usr.setLastName(lastName);
        usr.setId(id);
        userResource.updateUser(usr);
        return getAllUserView();
    }

    @GET
    @Produces(MediaType.TEXT_HTML)
    @Path("/delete/{id}")
    public TemplateInstance deleteUser(@PathParam("id")
                                               Long id)
            throws TemplateException, IOException {
        userResource.deleteUser(id);
        return getAllUserView();
    }
}


Creating Qute templates

home.html

<!doctype html>
<head>
    <title>Qute Example</title>
    <meta charset="utf-8">
    <meta content="width=device-width, initial-scale=1" name="viewport">
    <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css"
          rel="stylesheet">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js">
    </script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js">
    </script>
</head>
<body>
<div class="container">
    <h2>User CRUD operation with Quarkus + Qute Template</h2>
    <a href="/create" class="btn btn-primary" role="button">Create New User</a>
    <table class="table">
        <thead >
        <tr>
            <th scope="col">Id</th>
            <th scope="col">First Name</th>
            <th scope="col">Last Name</th>
            <th scope="col">Email</th>
            <th scope="col"></th>
            <th scope="col"></th>
        </tr>
        </thead>
        <tbody>
        {#for user in users}
        <tr>
            <th scope="row">{user.id}</th>
            <td>{user.firstName}</td>
            <td>{user.lastName}</td>
            <td>{user.email}</td>
            <td><a href="/update/{user.id}" class="btn btn-warning" role="button">
                Update</a></td>
            <td><a href="/delete/{user.id}" class="btn btn-danger" role="button">
                Delete</a></td>
        </tr>
        {/for}
        </tbody>
    </table>
</div>
</body>
</html>


createupdate.html

<!doctype html>
<head>
    <title>Qute Example</title>
    <meta charset="utf-8">
    <meta content="width=device-width, initial-scale=1" name="viewport">
    <link href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css"
          rel="stylesheet">
    <script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js">
    </script>
    <script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js">
    </script>
</head>
<body>
<div class="container">
            <h2>
               {#if !isUpdate}Create {/if}
            {#if isUpdate} Update {/if}
        User
        </h2>
<div>
    <form action="{#if isUpdate} /update/{user.id}{/if}{#if !isUpdate} /create {/if}"
          method="post" name="user">
        <table class="table">
            <tbody>
            <thead>
            <tr>
                <th>Field</th>
                <th>Value</th>
            </tr>
            </thead>
            <tbody>
           {#if isUpdate}
            <tr>
                <th>ID</th>
                <td>
                    <div name="id">{user.id}</div>
                </td>
            </tr>
            {/if}
            <tr>
                <th>First Name</th>
                <td><input name="firstName" type="text"
                           value="{#if user.firstName}{user.firstName}{/if}"/>
                                                    </td>
            </tr>
            <tr>
                <th>Last Name</th>
                <td><input name="lastName" type="text"
                           value="{#if user.lastName}{user.lastName}{/if}"/></td>
            </tr>
            <tr>
                <th>Email</th>
                <td><input name="email" type="text"
                           value="{#if user.email}{user.email}{/if}"/></td>
            </tr>
            </tbody>
        </table>
        <button class="btn btn-primary" type="submit">Save</button>
    </form>
</div>
</div>
</body>
</html>


Run the Application

Build application  jar file: mvn clean package

Start the application: java -jar quarkus-run.jar

Access the URL in  the browser: http://localhost:8080/


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