Creating a professional networking site with Spring Boot and Angular ( AI generated code)

Creating a professional networking site with Spring Boot and Angular involves setting up both a backend server with Spring Boot and a frontend client with Angular. This guide outlines the main steps needed to build such a project.


### 1. **Set Up the Backend with Spring Boot**


#### 1.1. **Create a Spring Boot Project**


You can create a Spring Boot project using Spring Initializr or your IDE.


**Using Spring Initializr:**

- Go to [Spring Initializr](https://start.spring.io/).

- Set the project metadata (e.g., group: `com.example`, artifact: `networking-site`).

- Choose the dependencies:

  - Spring Web

  - Spring Data JPA

  - Spring Security

  - H2 Database (for development)

  - MySQL Driver (for production)

  - Lombok (optional, for reducing boilerplate code)


**Generate the project and extract it.**


#### 1.2. **Set Up the Database**


In `src/main/resources/application.properties`, configure the H2 database for development and MySQL for production.


```properties

# H2 Database (for development)

spring.datasource.url=jdbc:h2:mem:testdb

spring.datasource.driverClassName=org.h2.Driver

spring.datasource.username=sa

spring.datasource.password=password

spring.jpa.database-platform=org.hibernate.dialect.H2Dialect

spring.h2.console.enabled=true


# MySQL Database (for production)

#spring.datasource.url=jdbc:mysql://localhost:3306/networkingdb

#spring.datasource.username=root

#spring.datasource.password=yourpassword

#spring.jpa.hibernate.ddl-auto=update

```


#### 1.3. **Create Entities**


Create the necessary JPA entities for users, connections, posts, etc.


**Example: User Entity**

```java

package com.example.networkingsite.model;


import lombok.Data;


import javax.persistence.*;

import java.util.Set;


@Data

@Entity

public class User {

    @Id

    @GeneratedValue(strategy = GenerationType.IDENTITY)

    private Long id;


    private String firstName;

    private String lastName;

    private String email;

    private String password;

    private String bio;


    @OneToMany(mappedBy = "user")

    private Set<Connection> connections;


    @OneToMany(mappedBy = "user")

    private Set<Post> posts;

}

```


**Example: Connection Entity**

```java

package com.example.networkingsite.model;


import lombok.Data;


import javax.persistence.*;


@Data

@Entity

public class Connection {

    @Id

    @GeneratedValue(strategy = GenerationType.IDENTITY)

    private Long id;


    @ManyToOne

    @JoinColumn(name = "user_id")

    private User user;


    @ManyToOne

    @JoinColumn(name = "connection_id")

    private User connection;

}

```


#### 1.4. **Create Repositories**


Create repositories for the entities.


**Example: UserRepository**

```java

package com.example.networkingsite.repository;


import com.example.networkingsite.model.User;

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

import java.util.Optional;


public interface UserRepository extends JpaRepository<User, Long> {

    Optional<User> findByEmail(String email);

}

```


#### 1.5. **Create Services**


Create service classes to handle the business logic.


**Example: UserService**

```java

package com.example.networkingsite.service;


import com.example.networkingsite.model.User;

import com.example.networkingsite.repository.UserRepository;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.stereotype.Service;


import java.util.Optional;


@Service

public class UserService {

    @Autowired

    private UserRepository userRepository;


    public Optional<User> findByEmail(String email) {

        return userRepository.findByEmail(email);

    }


    public User saveUser(User user) {

        return userRepository.save(user);

    }


    // Other business logic methods...

}

```


#### 1.6. **Create Controllers**


Create REST controllers to expose API endpoints.


**Example: UserController**

```java

package com.example.networkingsite.controller;


import com.example.networkingsite.model.User;

import com.example.networkingsite.service.UserService;

import org.springframework.beans.factory.annotation.Autowired;

import org.springframework.http.ResponseEntity;

import org.springframework.web.bind.annotation.*;


@RestController

@RequestMapping("/api/users")

public class UserController {

    @Autowired

    private UserService userService;


    @GetMapping("/{email}")

    public ResponseEntity<User> getUserByEmail(@PathVariable String email) {

        return userService.findByEmail(email)

            .map(ResponseEntity::ok)

            .orElse(ResponseEntity.notFound().build());

    }


    @PostMapping("/register")

    public ResponseEntity<User> registerUser(@RequestBody User user) {

        return ResponseEntity.ok(userService.saveUser(user));

    }


    // Other endpoints...

}

```


#### 1.7. **Security Configuration**


Configure Spring Security to secure your APIs.


**Example: SecurityConfig**

```java

package com.example.networkingsite.config;


import org.springframework.context.annotation.Bean;

import org.springframework.context.annotation.Configuration;

import org.springframework.security.config.annotation.web.builders.HttpSecurity;

import org.springframework.security.config.annotation.web.configuration.EnableWebSecurity;

import org.springframework.security.config.annotation.web.configuration.WebSecurityConfigurerAdapter;

import org.springframework.security.crypto.bcrypt.BCryptPasswordEncoder;

import org.springframework.security.crypto.password.PasswordEncoder;


@Configuration

@EnableWebSecurity

public class SecurityConfig extends WebSecurityConfigurerAdapter {


    @Override

    protected void configure(HttpSecurity http) throws Exception {

        http

            .csrf().disable()

            .authorizeRequests()

            .antMatchers("/api/users/register").permitAll()

            .anyRequest().authenticated()

            .and()

            .httpBasic();

    }


    @Bean

    public PasswordEncoder passwordEncoder() {

        return new BCryptPasswordEncoder();

    }

}

```


### 2. **Set Up the Frontend with Angular**


#### 2.1. **Create an Angular Project**


Create a new Angular project:


```bash

ng new networking-site-client

cd networking-site-client

```


#### 2.2. **Install Dependencies**


Install Angular Material and HTTP Client:


```bash

ng add @angular/material

npm install @angular/common@latest

```


#### 2.3. **Create Services**


Create services to interact with the backend API.


**Example: UserService**

```typescript

import { Injectable } from '@angular/core';

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

import { Observable } from 'rxjs';

import { User } from './user.model';


@Injectable({

  providedIn: 'root'

})

export class UserService {

  private baseUrl = 'http://localhost:8080/api/users';


  constructor(private http: HttpClient) { }


  registerUser(user: User): Observable<User> {

    return this.http.post<User>(`${this.baseUrl}/register`, user);

  }


  getUserByEmail(email: string): Observable<User> {

    return this.http.get<User>(`${this.baseUrl}/${email}`);

  }


  // Other service methods...

}

```


#### 2.4. **Create Models**


Create TypeScript models to represent the data structures.


**Example: User Model**

```typescript

export interface User {

  id?: number;

  firstName: string;

  lastName: string;

  email: string;

  password: string;

  bio?: string;

}

```


#### 2.5. **Create Components**


Create Angular components for different parts of your application.


**Example: Registration Component**

```typescript

import { Component } from '@angular/core';

import { UserService } from '../user.service';

import { User } from '../user.model';


@Component({

  selector: 'app-register',

  templateUrl: './register.component.html'

})

export class RegisterComponent {

  user: User = {

    firstName: '',

    lastName: '',

    email: '',

    password: ''

  };


  constructor(private userService: UserService) { }


  register() {

    this.userService.registerUser(this.user).subscribe(response => {

      console.log('User registered successfully!', response);

    });

  }

}

```


**Example: Registration HTML**

```html

<form (ngSubmit)="register()">

  <mat-form-field>

    <input matInput placeholder="First Name" [(ngModel)]="user.firstName" name="firstName" required>

  </mat-form-field>


  <mat-form-field>

    <input matInput placeholder="Last Name" [(ngModel)]="user.lastName" name="lastName" required>

  </mat-form-field>


  <mat-form-field>

    <input matInput placeholder="Email" [(ngModel)]="user.email" name="email" type="email" required>

  </mat-form-field>


  <mat-form-field>

    <input matInput placeholder="Password" [(ngModel)]="user.password" name="password" type="password" required>

  </mat-form-field>


  <button mat-raised-button color="primary" type="submit">Register</button>

</form>

```


#### 2.6. **Routing**


Set up routing in `app-routing.module.ts` to navigate between components.


```typescript

import { NgModule } from '@angular/core';

import { RouterModule, Routes } from '@angular/router';

import { RegisterComponent } from './register/register.component';


const routes: Routes = [

  { path: 'register', component: RegisterComponent },

  { path: '', redirectTo: '/register', pathMatch: 'full' }

];


@NgModule({

  imports: [RouterModule.forRoot(routes)],

  exports: [RouterModule]

})

export class AppRoutingModule { }

```


#### 2.7. **Serve the Application**


Run the Angular application:


```bash

ng serve

```


Your Angular app should now be running on [http://localhost:4200](


http://localhost:4200).


### 3. **Integrate Angular with Spring Boot**


For production, you will typically deploy the Angular app within the Spring Boot application by building the Angular app and copying the build output to the `src/main/resources/static` folder in your Spring Boot project.


**Build the Angular project:**

```bash

ng build --prod

```


**Copy the contents of the `dist/` folder to `src/main/resources/static/` in your Spring Boot project.**


### 4. **Deploying**


You can package your Spring Boot application into a JAR file and deploy it on a server. The Angular application will be served along with the backend.


```bash

mvn clean package

```


### Summary


You've created a basic professional networking site using Spring Boot for the backend and Angular for the frontend. This setup can be expanded with more features such as messaging, advanced search, notifications, and more complex user relationships.


 ( AI generated code)

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