How to use Java to develop a front-end development application based on JHipster

How to use Java to develop a front-end development application based on JHipster

Foreword:
In the field of front-end development, JHipster is a very popular open source tool. Help developers quickly build modern web applications. JHipster integrates many commonly used front-end and back-end technologies, including Java, Spring Boot, Angular, React, etc., allowing developers to quickly build a full-featured web application. This article will introduce how to use Java to develop a front-end development application based on JHipster and provide specific code examples.

1. Installing JHipster
   First, we need to install JHipster. JHipster is a Yeoman-based code generator, we can install it through npm:

npm install -g generator-jhipster

After the installation is completed, you can check whether the installation is successful:

jhipster --version

2. Create a new The JHipster project
   Go to the directory where you wish to create the project on the command line and run the following command:

jhipster

JHipster will prompt you to select some options to configure the project, such as selecting the front-end technology (Angular Or React), database type, etc. Choose based on your needs.

3. Developing front-end applications
   JHipster provides a separate directory for front-end applications, which contains all front-end code and resource files. Here, we will use Angular as the front-end framework, but you can also choose to use other frameworks such as React.

Enter the front-end directory:

cd src/main/webapp

In this directory, we can see an app folder, which contains all Angular code and resource files.

Open the app directory and you will find a subdirectory named home. This is a sample page that you can start developing your app from.

4. Writing front-end code
   Open the file in the home directory, and you will find a file named home.component.ts. This is the Angular component definition file, which contains the component's logic and views.

We can open the file using any text editor and start writing our code. Here is a simple example:

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

@Component({
  selector: 'app-home',
  templateUrl: './home.component.html',
  styleUrls: ['./home.component.scss']
})
export class HomeComponent implements OnInit {
  title = 'Hello, JHipster!';

  constructor() { }

  ngOnInit(): void {
  }
}

The above code defines an Angular component named HomeComponent, which has a property named title. We can use this attribute in HTML templates to display titles.

5. Writing front-end template
   In the home directory, you will also find a file named home.component.html. This is the component's HTML template file that defines the component's view.

Open home.component.html and write the following content:

<h1 id="title">{{ title }}</h1>

The above code simply displays the title of the component.

6. Run the application
   Go back to the root directory of the project and run the following command to start the application:

./mvnw

After successful startup, open the browser and visit http:// /localhost:8080/, you will see a page that says "Hello, JHipster!"

7. Advanced functions and advanced development
   In addition to the above basic functions, JHipster also provides many other advanced functions and advanced development options, including routing configuration, authentication and authorization, and API calling. etc. You can learn more through JHipster's documentation and community resources.

Conclusion:
This article introduces how to use Java to develop a front-end development application based on JHipster. We used JHipster to quickly build a full-featured web application, demonstrated the basic front-end development process, and provided specific code examples. I hope this article can provide you with some help so that you can better use JHipster to develop front-end applications.

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