Login Registration Form Using Spring Boot React

In this Article explains how to create spring boot react registration and login example  and how to set the hash password for the Security .Spring boot as backend front end React.
spring boot registration and login example step by step will teach.

Lets follow the following step

First you have add the following dependencies while you configuring the spring initializr

1. Spring jpa
2. Spring web
3. Spring security
4. Mysql

Open the project on the pom.xml

 <dependencies>
   <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-data-jpa</artifactId>
   </dependency>
   <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-web</artifactId>
   </dependency>

   <dependency>
    <groupId>com.mysql</groupId>
    <artifactId>mysql-connector-j</artifactId>
    <scope>runtime</scope>
  </dependency>
  <!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter-security -->
  <dependency>
    <groupId>org.springframework.boot</groupId>
    <artifactId>spring-boot-starter-security</artifactId>
    <version>2.7.8</version>
  </dependency>

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

you can see the dependencies what you added.

Database Configuration

Configure the database mysql database connection in the application.properties.  this place where connect to Spring boot  to Mysql.

application.properties

spring.application.name=Registation
server.port=8085

spring.jpa.hibernate.ddl-auto=create
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver


spring.datasource.url=jdbc:mysql://localhost:3306/dbkms?createDatabaseIfNotExist=true
spring.datasource.username=root
spring.datasource.password=root123

#jpa vendor adapter configuration
spring.jpa.database-platform=org.hibernate.dialect.MySQL57Dialect
spring.jpa.generate-ddl=true
spring.jpa.show-sql=true

Create the Entity Employee for represent the employee data in the database.

Employee

package com.example.Registation.Entity;
import javax.persistence.*;

@Entity
@Table(name="employee")
public class Employee {

    @Id
    @Column(name="employee_id", length = 45)
    @GeneratedValue(strategy = GenerationType.AUTO)
    private int employeeid;

    @Column(name="employee_name", length = 255)
    private String employeename;

    @Column(name="email", length = 255)
    private String email;

    @Column(name="password", length = 255)
    private String password;


    public Employee() {
    }

    public Employee(int employeeid, String employeename, String email, String password) {
        this.employeeid = employeeid;
        this.employeename = employeename;
        this.email = email;
        this.password = password;
    }

//create getters and setters

after that create the employeeDTOs for passing to data from frontend.in this example create two DTOs .

EmployeeDTO
LoginDTO

EmployeeDTO

public class EmployeeDTO {

    private int employeeid;
    private String employeename;
    private String email;
    private String password;

    public EmployeeDTO() {
    }

    public EmployeeDTO(int employeeid, String employeename, String email, String password) {
        this.employeeid = employeeid;
        this.employeename = employeename;
        this.email = email;
        this.password = password;
    }

} //create getters and setters

LoginDTO

public class LoginDTO {
private String email;
private String password;

public LoginDTO() {
}

public LoginDTO(String email, String password) {
this.email = email;
this.password = password;
} //create getters and setters

Create a EmployeeRepository interface which extends JpaRepository

EmployeeRepo

package com.example.Registation.Repo;

import com.example.Registation.Entity.Employee;
import org.springframework.data.jpa.repository.JpaRepository;
import org.springframework.data.jpa.repository.config.EnableJpaRepositories;
import org.springframework.stereotype.Repository;

import java.util.Optional;

@EnableJpaRepositories
@Repository
public interface EmployeeRepo extends JpaRepository<Employee,Integer>
{
      Optional<Employee> findOneByEmailAndPassword(String email, String password);

    Employee findByEmail(String email);
}

Create the Employee Service

EmployeeService

package com.example.Registation.Service;

import com.example.Registation.Dto.EmployeeDTO;
import com.example.Registation.Dto.LoginDTO;
import com.example.Registation.payload.response.LoginMesage;

public interface EmployeeService {
    String addEmployee(EmployeeDTO employeeDTO);

    LoginMesage loginEmployee(LoginDTO loginDTO);

}

Create the EmployeeImpl which implements from EmployeeService

EmployeeImpl

package com.example.Registation.Service.impl;

import com.example.Registation.Dto.EmployeeDTO;
import com.example.Registation.Dto.LoginDTO;
import com.example.Registation.Entity.Employee;
import com.example.Registation.Repo.EmployeeRepo;
import com.example.Registation.Service.EmployeeService;
import com.example.Registation.payload.response.LoginMesage;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;
import org.springframework.stereotype.Service;

import javax.annotation.Resource;
import java.util.Optional;

@Service

public class EmployeeIMPL implements EmployeeService {

    @Autowired
    private EmployeeRepo employeeRepo;

    @Autowired
    private PasswordEncoder passwordEncoder;


    @Override
    public String addEmployee(EmployeeDTO employeeDTO) {

        Employee employee = new Employee(

                employeeDTO.getEmployeeid(),
                employeeDTO.getEmployeename(),
                employeeDTO.getEmail(),

               this.passwordEncoder.encode(employeeDTO.getPassword())
        );

        employeeRepo.save(employee);

        return employee.getEmployeename();
    }
    EmployeeDTO employeeDTO;

    @Override
    public LoginMesage  loginEmployee(LoginDTO loginDTO) {
        String msg = "";
        Employee employee1 = employeeRepo.findByEmail(loginDTO.getEmail());
        if (employee1 != null) {
            String password = loginDTO.getPassword();
            String encodedPassword = employee1.getPassword();
            Boolean isPwdRight = passwordEncoder.matches(password, encodedPassword);
            if (isPwdRight) {
                Optional<Employee> employee = employeeRepo.findOneByEmailAndPassword(loginDTO.getEmail(), encodedPassword);
                if (employee.isPresent()) {
                    return new LoginMesage("Login Success", true);
                } else {
                    return new LoginMesage("Login Failed", false);
                }
            } else {

                return new LoginMesage("password Not Match", false);
            }
        }else {
            return new LoginMesage("Email not exits", false);
        }


    }

}

Create a EmployeeController to manage the Restful APIs requests related to employee login and registration.

EmployeeController

package com.example.RegisterLogin.EmployeeController;
import com.example.RegisterLogin.Dto.EmployeeDTO;
import com.example.RegisterLogin.Dto.LoginDTO;
import com.example.RegisterLogin.Service.EmployeeService;
import com.example.RegisterLogin.response.LoginResponse;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.*;

@RestController
@CrossOrigin
@RequestMapping("api/v1/employee")
public class EmployeeController {


    @Autowired
    private EmployeeService employeeService;


    @PostMapping(path = "/save")
    public String saveEmployee(@RequestBody EmployeeDTO employeeDTO)
    {
        String id = employeeService.addEmployee(employeeDTO);
        return id;
    }

    @PostMapping(path = "/login")
    public ResponseEntity<?> loginEmployee(@RequestBody LoginDTO loginDTO)
    {
        LoginResponse loginResponse = employeeService.loginEmployee(loginDTO);
        return ResponseEntity.ok(loginResponse);
    }
}

Security measures need to implemented 

Create a file  SecurityConfig for managing the Security password

package com.example.Registation.config;

import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;
import org.springframework.security.crypto.password.PasswordEncoder;

@Configuration
public class SecurityConfig {
    @Bean
    public PasswordEncoder passwordEncoder() {
        return new BCryptPasswordEncoder();
    }
}

Create LoginResponse Page for displaying Messages while testing

LoginResponse

public class LoginMesage {
    String message;
    Boolean status;

    public String getMessage() {
        return message;
    }

    public void setMessage(String message) {
        this.message = message;
    }

    public Boolean getStatus() {
        return status;
    }

    public void setStatus(Boolean status) {
        this.status = status;
    }

    public LoginMesage(String message, Boolean status) {
        this.message = message;
        this.status = status;
    }
}

Our backend is over lets start the frontend as React.

React

React is a front-end application.let’s install the react  inside the project folder open the command prompt and type the commands.

Installing React

npx create-react-app front-end

npm install --save axios
npm i react-router-dom

After that go to the bootstrap respective website and copy the bootstap css style and paste inside the index.html  inside the head tag.index.html is the single page application.

create the folder inside src which name is components inside the folder create 3 files. Home.jsx,Register.jsx,Login.jsx

Register.jsx

import {  useState } from "react";
import axios from "axios";

function Register() {
  
    const [employeename, setEmployeename] = useState("");
    const [email, setEmail] = useState("");
    const [password, setPassword] = useState("");


    async function save(event) {
        event.preventDefault();
        try {
          await axios.post("http://localhost:8085/api/v1/employee/save", {
          employeename: employeename,
          email: email,
          password: password,
          });
          alert("Employee Registation Successfully");

        } catch (err) {
          alert(err);
        }
      }
  
    return (
    <div>
    <div class="container mt-4" >
    <div class="card">
            <h1>Student Registation</h1>
    
    <form>
        <div class="form-group">
          <label>Employee name</label>
          <input type="text"  class="form-control" id="employeename" placeholder="Enter Name"
          
          value={employeename}
          onChange={(event) => {
            setEmployeename(event.target.value);
          }}
          />

        </div>

        <div class="form-group">
          <label>email</label>
          <input type="email"  class="form-control" id="email" placeholder="Enter Email"
          
          value={email}
          onChange={(event) => {
            setEmail(event.target.value);
          }}
          
          />
 
        </div>

        <div class="form-group">
            <label>password</label>
            <input type="password"  class="form-control" id="password" placeholder="Enter password"
            
            value={password}
            onChange={(event) => {
              setPassword(event.target.value);
            }}
            
            />
          </div>

        <button type="submit" class="btn btn-primary mt-4" onClick={save} >Save</button>
       
      </form>
    </div>
    </div>
     </div>
    );
  }
  
  export default Register;

import {  useState } from "react";
import { useNavigate } from 'react-router-dom';
import axios from "axios";


function Login() {
   
    const [email, setEmail] = useState("");
    const [password, setPassword] = useState("");
    const navigate = useNavigate();


    async function login(event) {
        event.preventDefault();
        try {
          await axios.post("http://localhost:8085/api/v1/employee/login", {
            email: email,
            password: password,
            }).then((res) => 
            {
             console.log(res.data);
             
             if (res.data.message == "Email not exits") 
             {
               alert("Email not exits");
             } 
             else if(res.data.message == "Login Success")
             { 
                
                navigate('/home');
             } 
              else 
             { 
                alert("Incorrect Email and Password not match");
             }
          }, fail => {
           console.error(fail); // Error!
  });
        }

 
         catch (err) {
          alert(err);
        }
      
      }

    return (
       <div>
            <div class="container">
            <div class="row">
                <h2>Login</h2>
             <hr/>
             </div>

             <div class="row">
             <div class="col-sm-6">
 
            <form>
        <div class="form-group">
          <label>Email</label>
          <input type="email"  class="form-control" id="email" placeholder="Enter Name"
          
          value={email}
          onChange={(event) => {
            setEmail(event.target.value);
          }}
          
          />

        </div>

        <div class="form-group">
            <label>password</label>
            <input type="password"  class="form-control" id="password" placeholder="Enter Fee"
            
            value={password}
            onChange={(event) => {
              setPassword(event.target.value);
            }}
            
            />
          </div>
                  <button type="submit" class="btn btn-primary" onClick={login} >Login</button>
              </form>

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

     </div>
    );
  }
  
  export default Login;

function Home() {
  return (
    <div>
     <h1>Home</h1>
    </div>
  );
}

export default Home;

import { BrowserRouter,Routes,Route } from "react-router-dom";
import Register from "./compontents/Register";
import Login from "./compontents/Login";
 
import Home from "./compontents/Home";


function App() {
  return (
    <div>

      <BrowserRouter>
            <Routes>
              <Route path="/home" element= { <Home/>} />
              <Route path="/register" element= { <Register/>} />
              <Route path="/" element= { <Login/>} />
            </Routes>
        </BrowserRouter>
      
    </div>
  );
}

export default App;