Registration + Login Example using Spring Boot, Spring Security, Spring Data JPA, Hibernate, MySQL, Thymeleaf

This tutorial will walk you through the process of creating a simple User Account Registration + Login Example with Spring Boot, Spring Security, Spring Data JPA, Hibernate, MySQL, Thymeleaf, and Bootstrap.

In this tutorial, we will develop two main functionalities:

1. Register user (stored data into MySQL database).

2. Login Authentication - validate user login credentials with database email and password.

What we'll build

Registration Page

Login Page

Video Tutorial

This tutorial is explained in below YouTube video. Subscribe to my YouTube channel at https://www.youtube.com/c/javaguides.

Tools and technologies used

• Spring Boot - 2.0.4.RELEASE
• JDK - 1.8 or later
• Spring Framework - 5.0.8 RELEASE
• Hibernate - 5.2.17. Final
• Maven - 3.2+
• IDE - Eclipse or Spring Tool Suite (STS)
• Tomcat - 8.5+
• Thymeleaf - 3.0.9 RELEASE
• Bootstrap - 3.3.7
• JQuery - 3.2.1
• MySQL - 5.1.46

1. Create Spring boot project and import in STS or Eclipse IDE

There are many ways to create a Spring Boot application. The simplest way is to use Spring Initializr at http://start.spring.io/, which is an online Spring Boot application generator.

Look at the above diagram, we have specified the following details:

• Generate: Maven Project
• Java Version: 1.8 (Default)
• Spring Boot:2.0.4
• Group: net.guides.springboot
• Artifact: registration-login-springboot-security-thymeleaf
• Name: registration-login-springboot-security-thymeleaf
• Package Name : net.javaguides.springboot.springsecurity
• Packaging: jar (This is the default value)
• Dependencies: Web, JPA, MySQL,Thymeleaf,Security

Click on the Generate Project Button. Now you can extract the downloaded ZIP file and import it into your favorite IDE.

2. Project Structure

Let’s start by looking at the project structure. Refer below screenshot to create project packaging structure for this example.

3. Maven project dependencies

<?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>net.guides.springboot</groupId>
    <artifactId>registration-login-springboot-security-thymeleaf</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <packaging>jar</packaging>

    <name>registration-login-springboot-security-thymeleaf</name>
    <description>Demo project for Spring Boot</description>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.4.RELEASE</version>
        <relativePath /> <!-- lookup parent from repository -->
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <java.version>1.8</java.version>
    </properties>

    <dependencies>
        <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-web</artifactId>
        </dependency>
        <dependency>
           <groupId>org.springframework.boot</groupId>
           <artifactId>spring-boot-starter-security</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-thymeleaf</artifactId>
        </dependency>
        <dependency>
            <groupId>org.thymeleaf.extras</groupId>
            <artifactId>thymeleaf-extras-springsecurity4</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
        </dependency>
        <!-- https://mvnrepository.com/artifact/commons-beanutils/commons-beanutils -->
        <dependency>
           <groupId>commons-beanutils</groupId>
           <artifactId>commons-beanutils</artifactId>
            <version>1.9.3</version>
       </dependency>
        <!-- bootstrap and jquery -->
        <dependency>
            <groupId>org.webjars</groupId>
            <artifactId>bootstrap</artifactId>
            <version>3.3.7</version>
        </dependency>
        <dependency>
             <groupId>org.webjars</groupId>
             <artifactId>jquery</artifactId>
             <version>3.2.1</version>
        </dependency>

        <!-- mysql connector -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>

        <!-- testing -->
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
           <scope>test</scope>
       </dependency>
       <dependency>
            <groupId>org.springframework.security</groupId>
            <artifactId>spring-security-test</artifactId>
            <scope>test</scope>
        </dependency>
    </dependencies>

    <build>
       <plugins>
          <plugin>
              <groupId>org.springframework.boot</groupId>
              <artifactId>spring-boot-maven-plugin</artifactId>
          </plugin>
      </plugins>
    </build>
</project>

4. Spring security configuration

We secure our application using Spring Security Form Authentication using the following configuration. Make sure you permit all access to the /registration page and your static resources.

package net.javaguides.springboot.springsecurity.config;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.authentication.dao.DaoAuthenticationProvider;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.web.builders.HttpSecurity;
import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.web.util.matcher.AntPathRequestMatcher;

import net.javaguides.springboot.springsecurity.service.UserService;

@Configuration
public class SecurityConfiguration extends WebSecurityConfigurerAdapter {

    @Autowired
    private UserService userService;

    @Override
    protected void configure(HttpSecurity http) throws Exception {
        http
            .authorizeRequests()
            .antMatchers(
                "/registration**",
                "/js/**",
                "/css/**",
                "/img/**",
                "/webjars/**").permitAll()
            .anyRequest().authenticated()
            .and()
            .formLogin()
            .loginPage("/login")
            .permitAll()
            .and()
            .logout()
            .invalidateHttpSession(true)
            .clearAuthentication(true)
            .logoutRequestMatcher(new AntPathRequestMatcher("/logout"))
            .logoutSuccessUrl("/login?logout")
            .permitAll();
    }

    @Bean
    public BCryptPasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }

    @Bean
    public DaoAuthenticationProvider authenticationProvider() {
        DaoAuthenticationProvider auth = new DaoAuthenticationProvider();
        auth.setUserDetailsService(userService);
        auth.setPasswordEncoder(passwordEncoder());
        return auth;
    }

    @Override
    protected void configure(AuthenticationManagerBuilder auth) throws Exception {
        auth.authenticationProvider(authenticationProvider());
    }
}

5. Configure MySQL

Create a database with the name "registration_module" in the MySQL database server.

We’ll need to configure MySQL database URL, username, and password so that Spring can establish a connection with the database on startup. 

Open application.properties and add following MySQL database configuration:

## Spring DATASOURCE (DataSourceAutoConfiguration & DataSourceProperties)
spring.datasource.url = jdbc:mysql://localhost:3306/registration_module?useSSL=false
spring.datasource.username = root
spring.datasource.password = root

## Hibernate Properties
# The SQL dialect makes Hibernate generate better SQL for the chosen database
spring.jpa.properties.hibernate.dialect = org.hibernate.dialect.MySQL5InnoDBDialect

# Hibernate ddl auto (create, create-drop, validate, update)
spring.jpa.hibernate.ddl-auto = update

Make sure that you change the spring.datasource.username and spring.datasource.password properties as per your MySQL installation.

The spring.jpa.hibernate.ddl-auto = update property makes sure that the database tables and the domain models in your application are in sync. Whenever you change the domain model, hibernate will automatically update the mapped table in the database when you restart the application.

I have also specified the log levels for hibernate so that we can debug the SQL queries executed by hibernate.

6. SQL DDL Script

As we specified spring.jpa.hibernate.ddl-auto = update property will auto-create tables in MySQL database. Below are create statements of three tables.

CREATE TABLE `role` (
  `id` bigint(20) NOT NULL,
  `name` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;

CREATE TABLE `user` (
  `id` bigint(20) NOT NULL,
  `email` varchar(255) DEFAULT NULL,
  `first_name` varchar(255) DEFAULT NULL,
  `last_name` varchar(255) DEFAULT NULL,
  `password` varchar(255) DEFAULT NULL,
  PRIMARY KEY (`id`),
  UNIQUE KEY `UKob8kqyqqgmefl0aco34akdtpe` (`email`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;


CREATE TABLE `users_roles` (
  `user_id` bigint(20) NOT NULL,
  `role_id` bigint(20) NOT NULL,
  KEY `FKt4v0rrweyk393bdgt107vdx0x` (`role_id`),
  KEY `FKgd3iendaoyh04b95ykqise6qh` (`user_id`),
  CONSTRAINT `FKgd3iendaoyh04b95ykqise6qh` FOREIGN KEY (`user_id`) REFERENCES `user` (`id`),
  CONSTRAINT `FKt4v0rrweyk393bdgt107vdx0x` FOREIGN KEY (`role_id`) REFERENCES `role` (`id`)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_0900_ai_ci;

7. Define Spring controller layer

UserRegistrationController

This controller is mapped to “/registration” URI. We use the UserRegistrationDto to process and validate the user registration form and inject it using the @ModelAttribute("user") annotation.

When the form is submitted it’s automatically validated and errors are available in the BindingResult. Next, we check if a user doesn’t already exist with the submitted email. If the form has any errors, we return to the registration page. Otherwise, we redirect and inform the user the registration procedure is complete.

package net.javaguides.springboot.springsecurity.web;

import javax.validation.Valid;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.validation.BindingResult;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;

import net.javaguides.springboot.springsecurity.model.User;
import net.javaguides.springboot.springsecurity.service.UserService;
import net.javaguides.springboot.springsecurity.web.dto.UserRegistrationDto;

@Controller
@RequestMapping("/registration")
public class UserRegistrationController {

    @Autowired
    private UserService userService;

    @ModelAttribute("user")
    public UserRegistrationDto userRegistrationDto() {
        return new UserRegistrationDto();
    }

    @GetMapping
    public String showRegistrationForm(Model model) {
        return "registration";
    }

    @PostMapping
    public String registerUserAccount(@ModelAttribute("user") @Valid UserRegistrationDto userDto,
        BindingResult result) {

        User existing = userService.findByEmail(userDto.getEmail());
        if (existing != null) {
            result.rejectValue("email", null, "There is already an account registered with that email");
        }

        if (result.hasErrors()) {
            return "registration";
        }

        userService.save(userDto);
        return "redirect:/registration?success";
    }
}

MainController

This is a simple controller for managing trivial thymeleaf pages.

package net.javaguides.springboot.springsecurity.web;

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

@Controller
public class MainController {

    @GetMapping("/")
    public String root() {
        return "index";
    }

    @GetMapping("/login")
    public String login(Model model) {
        return "login";
    }

    @GetMapping("/user")
    public String userIndex() {
        return "user/index";
    }
}

UserRegistrationDto

We use the UserRegistrationDto to validate the user registration form. This DTO is annotated using Hibernate-Validation annotations which validate trivial fields on empty and our own custom @FieldMatch annotations which validates if the password is equal to the confirm password and the email address field is equal to the confirm email address field.

package net.javaguides.springboot.springsecurity.web.dto;

import javax.validation.constraints.AssertTrue;
import javax.validation.constraints.Email;
import javax.validation.constraints.NotEmpty;

import net.javaguides.springboot.springsecurity.constraint.FieldMatch;

@FieldMatch.List({
    @FieldMatch(first = "password", second = "confirmPassword", message = "The password fields must match"),
    @FieldMatch(first = "email", second = "confirmEmail", message = "The email fields must match")
})
public class UserRegistrationDto {

    @NotEmpty
    private String firstName;

    @NotEmpty
    private String lastName;

    @NotEmpty
    private String password;

    @NotEmpty
    private String confirmPassword;

    @Email
    @NotEmpty
    private String email;

    @Email
    @NotEmpty
    private String confirmEmail;

    @AssertTrue
    private Boolean terms;

    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 getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public String getConfirmPassword() {
        return confirmPassword;
    }

    public void setConfirmPassword(String confirmPassword) {
        this.confirmPassword = confirmPassword;
    }

    public String getEmail() {
        return email;
    }

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

    public String getConfirmEmail() {
        return confirmEmail;
    }

    public void setConfirmEmail(String confirmEmail) {
        this.confirmEmail = confirmEmail;
    }

    public Boolean getTerms() {
        return terms;
    }

    public void setTerms(Boolean terms) {
        this.terms = terms;
    }
}

Creating Field Matching Validator

We created a special @FieldMatch annotation to support the validation process of comparing fields with each other if they match. We can input two fields first and second and an optional message.

package net.javaguides.springboot.springsecurity.constraint;

import javax.validation.Payload;
import javax.validation.Constraint;
import java.lang.annotation.Documented;
import java.lang.annotation.Retention;
import java.lang.annotation.Target;
import static java.lang.annotation.ElementType.ANNOTATION_TYPE;
import static java.lang.annotation.ElementType.TYPE;
import static java.lang.annotation.RetentionPolicy.RUNTIME;

@Target({
    TYPE,
    ANNOTATION_TYPE
})
@Retention(RUNTIME)
@Constraint(validatedBy = FieldMatchValidator.class)
@Documented
public @interface FieldMatch {
    String message() default "{constraints.field-match}";
    Class < ? > [] groups() default {};
    Class < ? extends Payload > [] payload() default {};
    String first();
    String second();

    @Target({
        TYPE,
        ANNOTATION_TYPE
    })
    @Retention(RUNTIME)
    @Documented
    @interface List {
        FieldMatch[] value();
    }
}

Next, we create a custom validator by implementing the ConstraintValidator. Here we can validate if the given input fields match. If they do we return true if the fields don’t match we return false.

package net.javaguides.springboot.springsecurity.constraint;

import javax.validation.ConstraintValidator;
import javax.validation.ConstraintValidatorContext;

import org.apache.commons.beanutils.BeanUtils;

public class FieldMatchValidator implements ConstraintValidator < FieldMatch, Object > {

    private String firstFieldName;
    private String secondFieldName;

    @Override
    public void initialize(final FieldMatch constraintAnnotation) {
        firstFieldName = constraintAnnotation.first();
        secondFieldName = constraintAnnotation.second();
    }

    @Override
    public boolean isValid(final Object value, final ConstraintValidatorContext context) {
        try {
            final Object firstObj = BeanUtils.getProperty(value, firstFieldName);
            final Object secondObj = BeanUtils.getProperty(value, secondFieldName);
            return firstObj == null && secondObj == null || firstObj != null && firstObj.equals(secondObj);
        } catch (final Exception ignore) {}
        return true;
    }
}

8. Define the Service layer

UserService

The UserService extends the UserDetailsService interface.

package net.javaguides.springboot.springsecurity.service;

import org.springframework.security.core.userdetails.UserDetailsService;

import net.javaguides.springboot.springsecurity.model.User;
import net.javaguides.springboot.springsecurity.web.dto.UserRegistrationDto;

public interface UserService extends UserDetailsService {

    User findByEmail(String email);

    User save(UserRegistrationDto registration);
}

UserServiceImpl

In the UserServiceImpl we implement the methods to look up a user by email and to save the user registration using the UserRegistrationDto. Make sure when you save the user you’ll encode his password using the BCryptPasswordEncoder. Otherwise, a database administrator will be able to see his/her password in plain text.

package net.javaguides.springboot.springsecurity.service;

import java.util.Arrays;
import java.util.Collection;
import java.util.stream.Collectors;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.core.GrantedAuthority;
import org.springframework.security.core.authority.SimpleGrantedAuthority;
import org.springframework.security.core.userdetails.UserDetails;
import org.springframework.security.core.userdetails.UsernameNotFoundException;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.stereotype.Service;

import net.javaguides.springboot.springsecurity.model.Role;
import net.javaguides.springboot.springsecurity.model.User;
import net.javaguides.springboot.springsecurity.repository.UserRepository;
import net.javaguides.springboot.springsecurity.web.dto.UserRegistrationDto;

@Service
public class UserServiceImpl implements UserService {

    @Autowired
    private UserRepository userRepository;

    @Autowired
    private BCryptPasswordEncoder passwordEncoder;

    public User findByEmail(String email) {
        return userRepository.findByEmail(email);
    }

    public User save(UserRegistrationDto registration) {
        User user = new User();
        user.setFirstName(registration.getFirstName());
        user.setLastName(registration.getLastName());
        user.setEmail(registration.getEmail());
        user.setPassword(passwordEncoder.encode(registration.getPassword()));
        user.setRoles(Arrays.asList(new Role("ROLE_USER")));
        return userRepository.save(user);
    }

    @Override
    public UserDetails loadUserByUsername(String email) throws UsernameNotFoundException {
        User user = userRepository.findByEmail(email);
        if (user == null) {
            throw new UsernameNotFoundException("Invalid username or password.");
        }
        return new org.springframework.security.core.userdetails.User(user.getEmail(),
            user.getPassword(),
            mapRolesToAuthorities(user.getRoles()));
    }

    private Collection < ? extends GrantedAuthority > mapRolesToAuthorities(Collection < Role > roles) {
        return roles.stream()
            .map(role -> new SimpleGrantedAuthority(role.getName()))
            .collect(Collectors.toList());
    }
}

9. Define Spring data JPA repositories

UserRepository

We create the UserRepository by extending the JpaRepository interface. This is a Spring Data interface and gives us all the CRUD operations automatically.

package net.javaguides.springboot.springsecurity.repository;

import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.stereotype.Repository;

import net.javaguides.springboot.springsecurity.model.User;

@Repository
public interface UserRepository extends JpaRepository < User, Long > {
    User findByEmail(String email);
}

10. Define JPA Entities

JPA entity - User

We have annotated our User and Role objects with Java Persistence API annotations. These annotations are used to map our POJOs to the database.

package net.javaguides.springboot.springsecurity.model;

import javax.persistence.*;
import java.util.Collection;

@Entity
@Table(uniqueConstraints = @UniqueConstraint(columnNames = "email"))
public class User {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;

    private String firstName;
    private String lastName;
    private String email;
    private String password;

    @ManyToMany(fetch = FetchType.EAGER, cascade = CascadeType.ALL)
    @JoinTable(
        name = "users_roles",
        joinColumns = @JoinColumn(
            name = "user_id", referencedColumnName = "id"),
        inverseJoinColumns = @JoinColumn(
            name = "role_id", referencedColumnName = "id"))
    private Collection < Role > roles;

    public User() {}

    public User(String firstName, String lastName, String email, String password) {
        this.firstName = firstName;
        this.lastName = lastName;
        this.email = email;
        this.password = password;
    }

    public User(String firstName, String lastName, String email, String password, Collection < Role > roles) {
        this.firstName = firstName;
        this.lastName = lastName;
        this.email = email;
        this.password = password;
        this.roles = roles;
    }

    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 String getPassword() {
        return password;
    }

    public void setPassword(String password) {
        this.password = password;
    }

    public Collection < Role > getRoles() {
        return roles;
    }

    public void setRoles(Collection < Role > roles) {
        this.roles = roles;
    }

    @Override
    public String toString() {
        return "User{" +
            "id=" + id +
            ", firstName='" + firstName + '\'' +
            ", lastName='" + lastName + '\'' +
            ", email='" + email + '\'' +
            ", password='" + "*********" + '\'' +
            ", roles=" + roles +
            '}';
    }
}

JPA entity - Role

package net.javaguides.springboot.springsecurity.model;

import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;

@Entity
public class Role {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private Long id;
    private String name;

    public Role() {}

    public Role(String name) {
        this.name = name;
    }

    public Long getId() {
        return id;
    }

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

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    @Override
    public String toString() {
        return "Role{" +
            "id=" + id +
            ", name='" + name + '\'' +
            '}';
    }
}

11. Run Spring boot application

Let's run the main Application class to run this standalone Spring boot application with embedded tomcat server:

package net.javaguides.springboot.springsecurity;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication
public class Application {

    public static void main(String[] args) {
        SpringApplication.run(Application.class, args);
    }
}

12. Thymeleaf Templates

The thymeleaf pages are built with bootstrap and jquery. All templates are located in the src/main/resources/templates folder. Note that we have used webjars to manage client-side dependencies.

User Registration Page

In the user registration page, we have multiple input fields. For each input field, we have a corresponding error message. On top of the form, we also have some global error messages.

<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">

<head>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />

    <link rel="stylesheet" type="text/css" th:href="@{/webjars/bootstrap/3.3.7/css/bootstrap.min.css}" />

    <title>Registration</title>
</head>

<body>
    <nav class="navbar navbar-inverse navbar-fixed-top">
        <div class="container">
            <div class="navbar-header">
                <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
     <span class="sr-only">Toggle navigation</span> <span
      class="icon-bar"></span> <span class="icon-bar"></span> <span
      class="icon-bar"></span>
    </button>
                <a class="navbar-brand" href="#" th:href="@{/}">Registration and
     Login Module</a>
            </div>
        </div>
    </nav>

    <br>
    <br>

    <div class="container">
        <div class="row">
            <div class="col-md-6 col-md-offset-3">

                <div th:if="${param.success}">
                    <div class="alert alert-info">You've successfully registered to our awesome app!</div>
                </div>

                <h1>Registration</h1>
                <form th:action="@{/registration}" th:object="${user}" method="post">

                    <p class="error-message" th:if="${#fields.hasGlobalErrors()}" th:each="error : ${#fields.errors('global')}" th:text="${error}">Validation error
                    </p>

                    <div class="form-group" th:classappend="${#fields.hasErrors('firstName')}? 'has-error':''">
                        <label for="firstName" class="control-label">First name</label> <input id="firstName" class="form-control" th:field="*{firstName}" />
                        <p class="error-message" th:each="error: ${#fields.errors('firstName')}" th:text="${error}">Validation error</p>
                    </div>
                    <div class="form-group" th:classappend="${#fields.hasErrors('lastName')}? 'has-error':''">
                        <label for="lastName" class="control-label">Last name</label> <input id="lastName" class="form-control" th:field="*{lastName}" />
                        <p class="error-message" th:each="error : ${#fields.errors('lastName')}" th:text="${error}">Validation error</p>
                    </div>
                    <div class="form-group" th:classappend="${#fields.hasErrors('email')}? 'has-error':''">
                        <label for="email" class="control-label">E-mail</label> <input id="email" class="form-control" th:field="*{email}" />
                        <p class="error-message" th:each="error : ${#fields.errors('email')}" th:text="${error}">Validation error
                        </p>
                    </div>
                    <div class="form-group" th:classappend="${#fields.hasErrors('confirmEmail')}? 'has-error':''">
                        <label for="confirmEmail" class="control-label">Confirm
       e-mail</label> <input id="confirmEmail" class="form-control" th:field="*{confirmEmail}" />
                        <p class="error-message" th:each="error : ${#fields.errors('confirmEmail')}" th:text="${error}">Validation error</p>
                    </div>
                    <div class="form-group" th:classappend="${#fields.hasErrors('password')}? 'has-error':''">
                        <label for="password" class="control-label">Password</label> <input id="password" class="form-control" type="password" th:field="*{password}" />
                        <p class="error-message" th:each="error : ${#fields.errors('password')}" th:text="${error}">Validation error</p>
                    </div>
                    <div class="form-group" th:classappend="${#fields.hasErrors('confirmPassword')}? 'has-error':''">
                        <label for="confirmPassword" class="control-label">Confirm
       password</label> <input id="confirmPassword" class="form-control" type="password" th:field="*{confirmPassword}" />
                        <p class="error-message" th:each="error : ${#fields.errors('confirmPassword')}" th:text="${error}">Validation error</p>
                    </div>
                    <div class="form-group" th:classappend="${#fields.hasErrors('terms')}? 'has-error':''">
                        <input id="terms" type="checkbox" th:field="*{terms}" /> <label class="control-label" for="terms"> I agree with the <a
       href="#">terms and conditions</a> for Registration.
      </label>
                        <p class="error-message" th:each="error : ${#fields.errors('terms')}" th:text="${error}">Validation error
                        </p>
                    </div>
                    <div class="form-group">
                        <button type="submit" class="btn btn-success">Register</button>
                        <span>Already registered? <a href="/" th:href="@{/login}">Login
        here</a></span>
                    </div>

                </form>
            </div>
        </div>
    </div>

    <script type="text/javascript" th:src="@{/webjars/jquery/3.2.1/jquery.min.js/}"></script>
    <script type="text/javascript" th:src="@{/webjars/bootstrap/3.3.7/js/bootstrap.min.js}"></script>
</body>
</html>

Index Page

The index page can be accessed via http://localhost:8080/ after a successful login.

<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org" xmlns:sec="http://www.thymeleaf.org/thymeleaf-extras-springsecurity3">

<head>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />

    <link rel="stylesheet" type="text/css" th:href="@{/webjars/bootstrap/3.3.7/css/bootstrap.min.css}" />

    <title>Registration</title>
</head>

<body>
    <nav class="navbar navbar-inverse navbar-fixed-top">
        <div class="container">
            <div class="navbar-header">
                <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
     <span class="sr-only">Toggle navigation</span> <span
      class="icon-bar"></span> <span class="icon-bar"></span> <span
      class="icon-bar"></span>
    </button>
                <a class="navbar-brand" href="#" th:href="@{/}">Registration and
     Login Module</a>
            </div>
            <div id="navbar" class="collapse navbar-collapse">
                <ul class="nav navbar-nav">
                    <li sec:authorize="isAuthenticated()"><a th:href="@{/logout}">Logout</a></li>
                </ul>
            </div>
        </div>
    </nav>

    <br>
    <br>
    <div class="container">
        <h2>User Registration and Login Module using Spring Boot, Spring MVC, Spring Security, JPA/Hibernate and Thymeleaf</h2>

        <p>
            Welcome <span sec:authentication="principal.username">User</span>
        </p>
    </div>

    <script type="text/javascript" th:src="@{/webjars/jquery/3.2.1/jquery.min.js/}"></script>
    <script type="text/javascript" th:src="@{/webjars/bootstrap/3.3.7/js/bootstrap.min.js}"></script>

</body>

</html>

Login Page

<!DOCTYPE html>
<html xmlns:th="http://www.thymeleaf.org">

<head>
    <meta charset="utf-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1" />

    <link rel="stylesheet" type="text/css" th:href="@{/webjars/bootstrap/3.3.7/css/bootstrap.min.css}" />

    <title>Registration</title>
</head>
<body>
    <nav class="navbar navbar-inverse navbar-fixed-top">
        <div class="container">
            <div class="navbar-header">
                <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#navbar" aria-expanded="false" aria-controls="navbar">
     <span class="sr-only">Toggle navigation</span> <span
      class="icon-bar"></span> <span class="icon-bar"></span> <span
      class="icon-bar"></span>
    </button>
                <a class="navbar-brand" href="#" th:href="@{/}">Registration and
     Login Module</a>
            </div>
        </div>
    </nav>
    <br>
    <br>
    <div class="container">

        <div class="row">
            <div class="col-md-6 col-md-offset-3">
                <h1>Login page</h1>
                <form th:action="@{/login}" method="post">
                    <div th:if="${param.error}">
                        <div class="alert alert-danger">Invalid username or password.
                        </div>
                    </div>
                    <div th:if="${param.logout}">
                        <div class="alert alert-info">You have been logged out.</div>
                    </div>
                    <div class="form-group">
                        <label for="username">Username</label>: <input type="text" id="username" name="username" class="form-control" autofocus="autofocus" placeholder="Username" />
                    </div>
                    <div class="form-group">
                        <label for="password">Password</label>: <input type="password" id="password" name="password" class="form-control" placeholder="Password" />
                    </div>
                    <div class="form-group">
                        <div class="row">
                            <div class="col-sm-6 col-sm-offset-3">
                                <input type="submit" name="login-submit" id="login-submit" class="form-control btn btn-primary" value="Log In" />
                            </div>
                        </div>
                    </div>
                    <div class="form-group">
                        <span>New user? <a href="/" th:href="@{/registration}">Register
        here</a></span>
                    </div>
                </form>
            </div>
        </div>


    </div>

    <script type="text/javascript" th:src="@{/webjars/jquery/3.2.1/jquery.min.js/}"></script>
    <script type="text/javascript" th:src="@{/webjars/bootstrap/3.3.7/js/bootstrap.min.js}"></script>
</body>
</html>

13. Time for Demo

Registration page demo

Access http://localhost:8080/registration and fill in some invalid fields.

After successful registration, the user is redirected to http://localhost:8080/registration?success

Login page demo

You can go to the login page at http://localhost:8080/login and log in with the registered user.

After successfully, login will navigate below the page.

References

• Spring Boot 2 MVC Web Application Thymeleaf JPA MySQL Example
• http://www.javaguides.net/p/spring-boot-tutorial.html

Learn complete Spring boot on Spring Boot Tutorial

The source code of this article available on my GitHub repository registration-login-springboot-security-thymeleaf

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