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Java framework microservice architecture micro front-end integration

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Release： 2024-06-03 17:27:00

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Java frameworks can be used to integrate microfrontends in microservices architectures, providing the following capabilities: Microservices frameworks: Spring Boot, Quarkus, and Micronaut support building microservices. Micro frontend frameworks: SystemJS and single-spa can be used to manage micro frontend applications. Example: An example of a microservices architecture and microfrontend integration built using Spring Boot and SystemJS shows the implementation of both the server side and the frontend.

Java framework microservice architecture micro front-end integration

Java framework’s microservice architecture micro front-end integration

Preface

Micro Front-end is a front-end architecture pattern that enables developers to integrate multiple independent applications within a single web application. This simplifies the development and maintenance of complex applications. Java frameworks provide a set of tools for building microservice architectures and integrating micro frontends.

Java Microservice Framework

Spring Boot: Spring Boot is a popular microservice framework that provides out-of-the-box development tools and automation capabilities.
Quarkus: Quarkus is a GraalVM-based microservices framework that focuses on fast startup time and memory usage.
Micronaut: Micronaut is a Java 11-based microservices framework that provides high performance and scalability.

Micro front-end framework

SystemJS: SystemJS is a modern modular loader that can load and integrate Multiple modules.
single-spa: single-spa is a JavaScript library that provides tools to manage micro front-end applications.
Micro frontend example

The following is an example of using Spring Boot to build a microservice architecture and integrate a microfrontend:

Server

@SpringBootApplication
public class Application {

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

@RestController
@RequestMapping("/api")
public class ApiController {

    @GetMapping("/data")
    public List<String> getData() {
        return List.of("Item 1", "Item 2", "Item 3");
    }
}

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Front-end

<!DOCTYPE html>
<html>
<head>
    <script type="module">
        // 加载 SystemJS 
        import { System } from 'systemjs';
        SystemJS.config({
            'map': {
                'app1': 'app1.js',
                'app2': 'app2.js'
            }
        });

        // 加载和挂载微前端应用程序
        const app1 = SystemJS.instantiate('app1');
        app1.then(module => module.default.mount('#app1'));

        const app2 = SystemJS.instantiate('app2');
        app2.then(module => module.default.mount('#app2'));
    </script>
</head>
<body>
    <div id="app1"></div>
    <div id="app2"></div>
</body>
</html>

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Micro-front-end module

// app1.js
export default {
    mount(container) {
        const element = document.createElement('div');
        element.innerHTML = 'This is App 1';
        container.appendChild(element);
    }
};

// app2.js
export default {
    mount(container) {
        const element = document.createElement('div');
        element.innerHTML = 'This is App 2';
        container.appendChild(element);
    }
};

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In this example, the server uses Spring Boot builds and serves the data, while the front-end uses SystemJS to load and integrate the two micro-front-end applications. A microfrontend application is implemented by mounting its root component into a specified container.

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