Spring Boot 3 + Vue JS 3 + MongoDB CRUD Application Example

In this section, we will learn how to develop a full-stack web application that is a basic User Management Application using Spring Boot 3, MongoDB, and Vue 3. You could download the source code from our Github repository, the download link is provided at the end of this tutorial.


After completing this tutorial what we will build?

We will build a full-stack web application that is a basic User Management Application with CRUD features: 

• Create User 
• List User 
• Update User 
• Delete User  


We divided this tutorial into two parts. 

PART 1 - Restful API Development with Spring Boot 3 & MongoDB.
PART 2 - UI development using Vue JS 3.


PART 1 - Restful API Development with Spring Boot 3

These are APIs that Spring backend App will export:



Backend project directory:



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.
<?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 
   https://maven.apache.org/xsd/maven-4.0.0.xsd">
   <modelVersion>4.0.0</modelVersion>
   <parent>
      <groupId>org.springframework.boot</groupId>
      <artifactId>spring-boot-starter-parent</artifactId>
      <version>3.0.1</version>
      <relativePath/> <!-- lookup parent from repository -->
   </parent>
   <groupId>com.knf.dev.demo</groupId>
   <artifactId>spring-boot-crud-application</artifactId>
   <version>0.0.1-SNAPSHOT</version>
   <name>spring-boot-crud-application</name>
   <description>Demo project for Spring Boot</description>
   <properties>
      <java.version>17</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-data-mongodb</artifactId>
      </dependency>
      <dependency>
         <groupId>org.springframework.boot</groupId>
         <artifactId>spring-boot-starter-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>


Configuring MongoDB Database

Go to your MongoDB Compass and create a Database named userdb and inside the database create a collection named user as seen in the below image.


Open src/main/resources/application.properties file and add the following content to it:

spring.data.mongodb.host=localhost
spring.data.mongodb.port=27017
spring.data.mongodb.database=userdb


Creating User Document

package com.knf.dev.demo.crudapplication.model;

import org.springframework.data.mongodb.core.mapping.Document;

@Document(collection = "user")
public class User {

    private String _id;
    private String firstName;
    private String lastName;
    private String emailId;

    public String getId() {
        return _id;
    }

    public void setId(String _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 getEmailId() {
        return emailId;
    }

    public void setEmailId(String emailId) {
        this.emailId = emailId;
    }

    public User(String _id, String firstName, String lastName,
                String emailId) {
        super();
        this._id = _id;
        this.firstName = firstName;
        this.lastName = lastName;
        this.emailId = emailId;
    }

    public User() {
        super();
    }
}


Creating UserRepository

package com.knf.dev.demo.crudapplication.repository;

import com.knf.dev.demo.crudapplication.model.User;
import org.springframework.data.mongodb.repository.MongoRepository;
import org.springframework.stereotype.Repository;

@Repository
public interface UserRepository extends MongoRepository<User, String> {

}


Create CustomErrorResponse

package com.knf.dev.demo.crudapplication.exception;

import com.fasterxml.jackson.annotation.JsonFormat;
import java.time.LocalDateTime;

public class CustomErrorResponse {

    @JsonFormat(shape = JsonFormat.Shape.STRING,
            pattern = "yyyy-MM-dd hh:mm:ss")
    private LocalDateTime timestamp;
    private int status;
    private String error;
    public LocalDateTime getTimestamp() {
        return timestamp;
    }
    public void setTimestamp(LocalDateTime timestamp) {
        this.timestamp = timestamp;
    }
    public int getStatus() {
        return status;
    }
    public void setStatus(int status) {
        this.status = status;
    }
    public String getError() {
        return error;
    }
    public void setError(String error) {
        this.error = error;
    }
}


Create ResourceNotFoundException

package com.knf.dev.demo.crudapplication.exception;

import org.springframework.http.HttpStatus;
import org.springframework.web.bind.annotation.ResponseStatus;

@ResponseStatus(value = HttpStatus.NOT_FOUND)
public class ResourceNotFoundException extends RuntimeException{

   private static final long serialVersionUID = 1L;
   
   public ResourceNotFoundException(String message) {
      super(message);
   }
}


Create GlobalExceptionHandler

package com.knf.dev.demo.crudapplication.exception;

import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.ControllerAdvice;
import org.springframework.web.bind.annotation.ExceptionHandler;
import org.springframework.web.context.request.WebRequest;
import java.time.LocalDateTime;

@ControllerAdvice
public class GlobalExceptionHandler {

    @ExceptionHandler(ResourceNotFoundException.class)
    public ResponseEntity<CustomErrorResponse> globalExceptionHandler
                   (Exception ex, WebRequest request) {
        CustomErrorResponse errors = new CustomErrorResponse();
        errors.setTimestamp(LocalDateTime.now());
        errors.setError(ex.getMessage());
        errors.setStatus(HttpStatus.NOT_FOUND.value());
        return new ResponseEntity<>(errors, HttpStatus.NOT_FOUND);
    }
}


Create UserController

package com.knf.dev.demo.crudapplication.controller;

import java.util.HashMap;
import java.util.List;
import java.util.Map;
import com.knf.dev.demo.crudapplication.model.User;
import com.knf.dev.demo.crudapplication.exception.ResourceNotFoundException;
import com.knf.dev.demo.crudapplication.repository.UserRepository;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.CrossOrigin;
import org.springframework.web.bind.annotation.DeleteMapping;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.PutMapping;
import org.springframework.web.bind.annotation.RequestBody;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;


@CrossOrigin(origins = "*")
@RestController
@RequestMapping("/api/v1")
public class UserController {
    @Autowired
    private UserRepository userRepository;

    @GetMapping("/users")
    public List<User> getAllUsers() {
        return userRepository.findAll();
    }

    @GetMapping("/users/{id}")
    public ResponseEntity<User> getUserById(@PathVariable(value = "id")
                      String id) throws ResourceNotFoundException {

        User user = userRepository.findById(id)
                .orElseThrow(() -> new ResourceNotFoundException
                        ("User not found for this id :: " + id));
        return ResponseEntity.ok().body(user);
    }

    @PostMapping("/users")
    public User createUser(@RequestBody User user) {
        return userRepository.save(user);
    }

    @PutMapping("/users/{id}")
    public ResponseEntity<User> updateUser(@PathVariable(value = "id")
                         String id, @RequestBody User userDto)
            throws ResourceNotFoundException {

        User user = userRepository.findById(id)
                .orElseThrow(() -> new ResourceNotFoundException
                        ("User not found for this id :: " + id));

        user.setEmailId(userDto.getEmailId());
        user.setLastName(userDto.getLastName());
        user.setFirstName(userDto.getFirstName());
        user.setId(id);
        final User updateUser = userRepository.save(user);
        return ResponseEntity.ok(updateUser);
    }

    @DeleteMapping("/users/{id}")
    public Map<String, Boolean> deleteUser(@PathVariable(value = "id")
                            String id) throws ResourceNotFoundException {
        User user = userRepository.findById(id)
                .orElseThrow(() -> new ResourceNotFoundException
                        ("User not found for this id :: " + id));

        userRepository.delete(user);
        Map<String, Boolean> response = new HashMap<>();
        response.put("deleted", Boolean.TRUE);
        return response;
    }
}


Main Driver

package com.knf.dev.demo.crudapplication;

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

@SpringBootApplication
public class CrudApplication {

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


Run the application and verify REST APIs


Step 1: mvn clean install


Step 2: Run the Spring Boot application - mvn spring-boot:run


Add User:


Update User by ID:


Fetch all Users:


Get User by ID:


Delete User by ID:



PART 2 - UI development using Vue JS 3

Frontend Project Directory



package.json

{
  "name": "vue-3-crud-application",
  "version": "0.1.0",
  "private": true,
  "scripts": {
    "serve": "vue-cli-service serve",
    "build": "vue-cli-service build",
    "lint": "vue-cli-service lint"
  },
  "dependencies": {
    "axios": "^0.21.1",
    "bootstrap": "^4.6.0",
    "core-js": "^3.6.5",
    "jquery": "^3.6.0",
    "popper.js": "^1.16.1",
    "vue": "^3.0.0",
    "vue-router": "^4.0.6"
  },
  "devDependencies": {
    "@vue/cli-plugin-babel": "^5.0.8",
    "@vue/cli-plugin-eslint": "^5.0.8",
    "@vue/cli-service": "^5.0.8",
    "@vue/compiler-sfc": "^3.0.0",
    "babel-eslint": "^10.1.0",
    "eslint": "^7.32.0",
    "eslint-plugin-vue": "^7.0.0"
  },
  "eslintConfig": {
    "root": true,
    "env": {
      "node": true
    },
    "extends": [
      "plugin:vue/vue3-essential",
      "eslint:recommended"
    ],
    "parserOptions": {
      "parser": "babel-eslint"
    },
    "rules": {}
  },
  "browserslist": [
    "> 1%",
    "last 2 versions",
    "not dead"
  ]
}


Components

Vue Components are one of the important features of VueJS that creates custom elements, which can be reused in HTML.

User.vue

<template>
  <div>
    <h3>User</h3>
    <div class="container">
      <form @submit="validateAndSubmit">
        <div v-if="errors.length">
          <div
            class="alert alert-danger"
            v-bind:key="index"
            v-for="(error, index) in errors"
          >
            {{ error }}
          </div>
        </div>
        <fieldset class="form-group">
          <label>First Name</label>
          <input type="text" class="form-control" v-model="firstName" />
        </fieldset>
        <fieldset class="form-group">
          <label>Last Name</label>
          <input type="text" class="form-control" v-model="lastName" />
        </fieldset>
        <fieldset class="form-group">
          <label>Email Id</label>
          <input type="text" class="form-control" v-model="emailId" />
        </fieldset>
        <button class="btn btn-success" type="submit">Save</button>
      </form>
    </div>
  </div>
</template>
<script>
import UserDataService from "../service/UserDataService";

export default {
  name: "User",
  data() {
    return {
      firstName: "",
      lastName: "",
      emailId: "",
      errors: [],
    };
  },
  computed: {
    id() {
      return this.$route.params.id;
    },
  },
  methods: {
    refreshUserDetails() {
      UserDataService.retrieveUser(this.id).then((res) => {
        this.firstName = res.data.firstName;
        this.lastName = res.data.lastName;
        this.emailId = res.data.emailId;
      });
    },
    validateAndSubmit(e) {
      e.preventDefault();
      this.errors = [];
      if (!this.firstName) {
        this.errors.push("Enter valid values");
      } else if (this.firstName.length < 5) {
        this.errors.push("Enter atleast 5 characters in First Name");
      }
      if (!this.lastName) {
        this.errors.push("Enter valid values");
      } else if (this.lastName.length < 5) {
        this.errors.push("Enter atleast 5 characters in Last Name");
      }
      if (this.errors.length === 0) {
        if (this.id == -1) {
          UserDataService.createUser({
            firstName: this.firstName,
            lastName: this.lastName,
            emailId: this.emailId,
          }).then(() => {
            this.$router.push("/");
          });
        } else {
          UserDataService.updateUser(this.id, {
            id: this.id,
            firstName: this.firstName,
            lastName: this.lastName,
            emailId: this.emailId,
          }).then(() => {
            this.$router.push("/");
          });
        }
      }
    },
  },
  created() {
    this.refreshUserDetails();
  },
};
</script>


Users.vue

<template>
    <div class="container">
      <h3>All Users</h3>
      <div v-if="message" class="alert alert-success">{{ this.message }}</div>
      <div class="container">
        <table class="table">
          <thead>
            <tr>
             
              <th>First Name</th>
              <th>Last Name</th>
              <th>Email Id</th>
              <th>Update</th>
              <th>Delete</th>
            </tr>
          </thead>
          <tbody>
            <tr v-for="user in users" v-bind:key="user.id">
            
              <td>{{ user.firstName }}</td>
              <td>{{ user.lastName }}</td>
              <td>{{ user.emailId }}</td>
              <td>
              <button class="btn btn-warning" v-on:click="updateUser(user.id)">
                  Update
                </button>
              </td>
              <td>
               <button class="btn btn-danger" v-on:click="deleteUser(user.id)">
                  Delete
                </button>
              </td>
            </tr>
          </tbody>
        </table>
        <div class="row">
          <button class="btn btn-success" v-on:click="addUser()">Add</button>
        </div>
      </div>
    </div>
  </template>
  <script>
  import UserDataService from "../service/UserDataService";
  
  export default {
    name: "Users",
    data() {
      return {
        users: [],
        message: "",
      };
    },
    methods: {
      refreshUsers() {
        UserDataService.retrieveAllUsers().then((res) => {
          this.users = res.data;
        });
      },
      addUser() {
        this.$router.push(`/user/-1`);
      },
      updateUser(id) {
        this.$router.push(`/user/${id}`);
      },
      deleteUser(id) {
        UserDataService.deleteUser(id).then(() => {
          this.refreshUsers();
        });
      },
    },
    created() {
      this.refreshUsers();
    },
  };
  </script>


UserDataService.js

import axios from 'axios'

const USER_API_URL = 'http://localhost:8080/api/v1'

class UserDataService {

    retrieveAllUsers() {
        return axios.get(`${USER_API_URL}/users`);
    }

    retrieveUser(id) {
        return axios.get(`${USER_API_URL}/users/${id}`);
    }

    deleteUser(id) {
        return axios.delete(`${USER_API_URL}/users/${id}`);
    }

    updateUser(id, user) {
        return axios.put(`${USER_API_URL}/users/${id}`, user);
    }
    createUser(user) {
        return axios.post(`${USER_API_URL}/users`, user);
    }
  }
export default new UserDataService()


App.vue

<template>
  <div class="container">
    <div class="navbar-header">
      <a class="navbar-brand" href="#"
        >Spring Boot 3+ Mongo DB + Vue 3 CRUD Application</a
      ><br /><br />
    </div>
    <router-view />
  </div>
</template>

<script>
export default {
  name: "app",
};
</script>


router.js

import { createWebHistory, createRouter } from "vue-router";

const routes =  [
    {
        path: "/",
        name: "Users",
        component: () => import("./components/Users"),
    },
    {
        path: "/user/:id",
        name: "User",
        component: () => import("./components/User"),
    },
];

const router = createRouter({
  history: createWebHistory(),
  routes,
});

export default router;


main.js

import { createApp } from 'vue'
import App from './App.vue'
import 'bootstrap'
import 'bootstrap/dist/css/bootstrap.min.css'
import router from './router'

createApp(App).use(router).mount('#app')


Local Setup and Run the application

Step1: Download or clone the source code from GitHub to the local machine - Click here


Backend


Step 2: mvn clean install


Step 3: Run the Spring Boot application - mvn spring-boot:run


Frontend


Step 4: npm install


Step 5: npm run serve -- --port 8082

From the browser call the endpoint http://localhost:8082

Popular posts from this blog

Learn Java 8 streams with an example - print odd/even numbers from Array and List

Example 1: Java 8 program to print odd numbers from a List   import java.util.Arrays; import java.util.List; import java.util.stream.Collectors; /*Java 8 Program to find Odd Numbers from a List*/ public class DriverClass { public static void main( String [] args) { List < Integer > numbers = Arrays. asList( 1 , 4 , 8 , 40 , 11 , 22 , 33 , 99 ); List < Integer > oddNumbers = numbers.stream(). filter(o -> o % 2 != 0 ). collect(Collectors.toList()); System.out.println(oddNumbers); } } 1. Initialize List using Arrays.asList() method. Java's built-in Arrays.asList() method converts an array into a list. This method takes an array as an argument and returns a List object. 2.  Java List interface provides stream() method which returns a sequential Stream with list of Integer as its source. 3. The Java stream filter() method allow
Read more

Java Stream API - How to convert List of objects to another List of objects using Java streams?

Image
In this section, we will show you how to convert a List of objects to another List of objects in Java using the Java streams map(). The ‘map’ method maps each element to its corresponding result. Java Stream API   The Java Stream API provides a functional programming approach over the object oriented capabilities of Java. It is used for processing collections of objects. The Stream in Java can be defined as a sequence of elements from a source List, Set or Array. Most of the stream operations return a Stream. This avails engender a chain of stream operations(stream pipe-lining). The streams withal support the aggregate or terminal operations on the elements. for example, finding the sum or maximum element or finding the average etc...Stream operations can either be executed sequentially or parallel. when performed parallelly, it is called a parallel stream.   Stream map() Method   The Java 8 Stream map() is an intermediate operation. It converts Stream<obj1> to Stream<obj2>
Read more

Registration and Login with Spring Boot + Spring Security + Thymeleaf

Image
In this section, we will learn how to create user registration and login using Spring boot, Spring security, Thymeleaf, JPA, and H2DB. The GitHub repository link is provided at the end of this tutorial. You can download the source code. Technologies used: Spring Boot 2.5.5  Spring Data JPA  Spring Security  Thymeleaf  Maven 3+  Java 17  H2 Database   User Interface User Registration Authentication Failed Authentication success Sign out Final Project Structure: Complete pom.xml: <? 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 https://maven.apache.org/xsd/maven-4.0.0.xsd" > < modelVersion >4.0.0</ modelVersion > < parent > < groupId >org.springframework.boot</ groupId > < artifactId >spring-boot-starter-pare
Read more

Java, Spring Boot Mini Project - Library Management System - Download

Image
Hello everyone, Hope you are doing well. Here, we provide a Library Management System mini-project for beginners, it's free for download. Maybe you can build more on top of this project and create your own product, that's all about you. The source code download link is provided at the end of this post. 1. Benefit of this project You could cover the following technologies and features by learning and debugging this mini project. Java 17 Java Stream Java Lamda Expressions Java Records Functional programming Object-oriented programming var Keyword in Java Generics in Java Java Switch Spring boot 2.6.4 Spring Security Thymeleaf template engine OpenCSV Spring Data JPA Server Side Pagination H2 Database  Bootstrap HTML CSS and more... 2. Objective Of Spring Boot On Library Management System The main objective of this project is to manage the details of the books, author, category, and publisher. Only Admin/Librarian will manage all these activities. Also, they can export the data in
Read more

ReactJS, Spring Boot JWT Authentication Example

Image
In this tutorial, we’ll create a user registration & login example using ReactJS, Spring Boot, Spring Security, and JWT authentication. You could download the source code from our Github repository, the download link is provided at the end of this tutorial. Technologies used Backend Technologies: Java 17 Spring Boot 2.7.0 Spring Security Spring Data JPA JWT H2 Database Frontend Technologies: React 17.0.1 Axios 0.27.2 Redux 4.0.5 Bootstrap 4.5.2 ReactJS - SpringBoot - JWT - Flow Backend Project Directory: Frontend Project Directory: Following is the screenshot of our application - User Registration: User Signin: Profile View: Access Resource: We will build two projects:  1. Backend:   spring-boot-security-jwt 2. Frontend: react-redux-jwt Project 1: spring-boot-security-jwt Pom.xml <?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"
Read more

Top 5 Java ORM tools - 2024

Image
  The term ORM refers to object-relational mapping, which uses objects to adapt programming languages to database systems while allowing them to function with SQL and object-oriented programming ideas. Any kind of database management system that can accomplish object mapping to the table in the virtual system is suitable for the implementation of ORM. Java has a wide variety of ORM tools, some of which are mentioned below: 1. Hibernate Hibernate is a lightweight, open-source, non-invasive Java ORM (Object-Relational Mapping) framework that allows developers to create objects that function independently of database software and create persistence logic in any Java or JavaEE application. It offers an abstraction layer, so developers don't have to bother about implementations; Hibernate handles these tasks internally, such as connecting to databases and creating queries to carry out CRUD operations, among other things. Persistence logic development is done with it. Persistence logic r
Read more

Java - Blowfish Encryption and decryption Example

Image
Blowfish is an encryption method developed by Bruce Schneier in 1993 as an alternative to the DES encryption method. It is significantly faster than DES and provides good encryption speed, although no effective cryptanalysis technique has been found to date. It is one of the first secure block ciphers that is not protected by any patents and is therefore freely available for anyone to use. This is a symmetric block cipher algorithm. Block size: 64 bits Key size: variable size from 32 to 448 bits number of subsections: 18 [P-array] number of rounds: 16 number of substitution blocks: 4 [each with 512 records of 32 bits each] develop  Example 1: Encryption and decryption using Blowfish import java.io.UnsupportedEncodingException; import java.nio.charset.Charset; import java.security.InvalidKeyException; import java.security.NoSuchAlgorithmException; import java.util.Base64; import javax.crypto.BadPaddingException; import javax.crypto.Cipher; import javax.crypto.IllegalBlockSizeExc
Read more

Spring boot video streaming example-HTML5

Image
Hello everyone, Today we will learn how to stream MP4 video using Spring Boot and Spring Web Flux.  The Source code download link is provided at the end of this post. New, Quarkus Practice User Interface   Project Structure: G radle(build.gradle) plugins { id 'org.springframework.boot' version '2.5.4' id 'io.spring.dependency-management' version '1.0.11.RELEASE' id 'java' } group = 'com.knf.demo' version = '0.0.1-SNAPSHOT' sourceCompatibility = '11' repositories { mavenCentral() } dependencies { implementation 'org.springframework.boot:spring-boot-starter-webflux' testImplementation 'org.springframework.boot:spring-boot-starter-test' testImplementation 'io.projectreactor:reactor-test' } test { useJUnitPlatform() } Service (VideoStreamingService.java) package  com.knf.demo.service ; import org.springframework.beans.factory.annotation. Autowired ; import org.springframework
Read more

Google Cloud Storage + Spring Boot - File Upload, Download, and Delete

Image
In this section, we will learn  how to  create a simple spring boot application to perform different file operations such as upload, download, list, and delete files from the Google Cloud Storage. 1.  A little bit of Background Google Cloud Storage Cloud Storage is a managed service for storing unstructured data. Store any amount of data and retrieve it as often as you like. More Info - click here! Spring Boot Spring Boot makes it easy to create stand-alone, production-grade Spring-based Applications that you can "just run".  More Info - click here! 2. Create a GCP Project First, Sign into the Google console at  https://console.cloud.google.com . You can create a new project by first selecting the project dropdown in the top left and selecting " New Project ". Next, specify your GCP  Project name  and  Project ID . Then  Click on the " CREATE " button. Copy " Project ID " and keep it for future purposes. 3. Create a Google Cloud Storage bucket Fr
Read more