Login Registration Form Using Spring Boot Angular

In this Article explains how to create the login and registration using Spring Boot and Angular  and how to set the hash password for the Security .Spring boot as backend front end angular.

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 see the dependencies what you added.

Create the Mysql Database and Configure the 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

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 api 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;
    }
}

Angular

Angular is a front-end application we have already created the folder front end inside the folder open the command prompt and type the commands.

Installing Angular CLI

npm install -g @angular/cli

After that create the new Project of Angular running by the following command

ng new front-endapp-project

ng serve

ng g c login

ng g c register

ng g c home

<!doctype html>
<html lang="en">
<head>
  <meta charset="utf-8">
  <title>FrondEnd</title>
  <base href="/">
  <meta name="viewport" content="width=device-width, initial-scale=1">
  <link rel="icon" type="image/x-icon" href="favicon.ico">
  <link href="https://cdn.jsdelivr.net/npm/bootstrap@5.3.0-alpha1/dist/css/bootstrap.min.css" rel="stylesheet" integrity="sha384-GLhlTQ8iRABdZLl6O3oVMWSktQOp6b7In1Zl3/Jr59b6EGGoI1aFkw7cmDA6j6gD" crossorigin="anonymous">
</head>
<body>
  <app-root></app-root>
</body>
</html>

imports: [
    BrowserModule,
    AppRoutingModule,
    FormsModule,
    HttpClientModule
  ]

<div class="container mt-4" >
    <div class="card">
        <h1>Employee Registation</h1>
<form>
    <div class="form-group">
      <label>Name</label>
      <input type="text" [(ngModel)]="employeename" [ngModelOptions]="{standalone: true}"  class="form-control" id="name" class="form-control" placeholder="Enter Name">
    </div>

    <div class="form-group">
        <label>Email</label>
        <input type="email" [(ngModel)]="email" [ngModelOptions]="{standalone: true}" class="form-control" id="email"  placeholder="Enter Email">
      </div>

      <div class="form-group">
        <label>Paaword</label>
        <input type="password" [(ngModel)]="password" [ngModelOptions]="{standalone: true}" class="form-control" id="password" class="form-control" placeholder="Enter Password">
      </div>

     <button type="submit" class="btn btn-primary" (click)="save()">Register</button>


  </form>
</div>

</div>

import { HttpClient } from '@angular/common/http';
import { Component } from '@angular/core';

@Component({
  selector: 'app-register',
  templateUrl: './register.component.html',
  styleUrls: ['./register.component.scss']
})
export class RegisterComponent {
  employeename: string ="";
  email: string ="";
  password: string ="";


  constructor(private http: HttpClient )
  {

  }
  save()
  {
  
    let bodyData = {
      "employeename" : this.employeename,
      "email" : this.email,
      "password" : this.password
    };
    this.http.post("http://localhost:8085/api/v1/employee/save",bodyData,{responseType: 'text'}).subscribe((resultData: any)=>
    {
        console.log(resultData);
        alert("Employee Registered Successfully");

    });
  }

}

<div class="container mt-4" >
    <div class="card">
        <h1>Employee Login</h1>
<form>

    <div class="form-group">
        <label>Email</label>
        <input type="email" [(ngModel)]="email" [ngModelOptions]="{standalone: true}" class="form-control" id="email"  placeholder="Enter Email">
      </div>

      <div class="form-group">
        <label>Paaword</label>
        <input type="password" [(ngModel)]="password" [ngModelOptions]="{standalone: true}" class="form-control" id="password" class="form-control" placeholder="Enter Password">
      </div>

     <button type="submit" class="btn btn-primary" (click)="Login()">Login</button>


  </form>
</div>

</div>

import { HttpClient } from '@angular/common/http';
import { Component } from '@angular/core';
import { Router } from '@angular/router';

@Component({
  selector: 'app-login',
  templateUrl: './login.component.html',
  styleUrls: ['./login.component.scss']
})
export class LoginComponent {
 

  email: string ="";
  password: string ="";


  constructor(private router: Router,private http: HttpClient) {}
 


  Login() {
    console.log(this.email);
    console.log(this.password);
 
    let bodyData = {
      email: this.email,
      password: this.password,
    };
 
        this.http.post("http://localhost:8085/api/v1/employee/login", bodyData).subscribe(  (resultData: any) => {
        console.log(resultData);
 
        if (resultData.message == "Email not exits")
        {
      
          alert("Email not exits");
    
 
        }
        else if(resultData.message == "Login Success")
    
         {
          this.router.navigateByUrl('/home');
        }
        else
        {
          alert("Incorrect Email and Password not match");
        }

      });
    }

}

const routes: Routes = [
  {
    path: '',
    component: LoginComponent
  },
  
  {
  path: 'home',
  component: HomeComponent,
  
  },
  {
  
  path: 'register',
  component: RegisterComponent,
  }

];