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How to use Java framework to integrate front-end framework?

WBOYOriginal: 2024-06-03 12:05:57421browse

Steps to integrate mainstream front-end frameworks with Java back-end: Angular integration: Use Spring Boot to create a back-end, import Angular scripts, create HTML pages, and define controllers. React integration: Same as above, but using React scripts and components. Vue.js integration: Same as above, but using Vue.js scripts and components.

How to use the Java framework to integrate the front-end framework

In modern Web development, integrating the front-end framework with the Java back-end framework has been becoming more and more common. This article explains how to use Spring Boot to integrate with popular front-end frameworks such as Angular, React, and Vue.js.

Angular integration

@SpringBootApplication
public class SpringBootAngularDemoApplication {

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

<!-- angular.html -->
<html>
<head>
  <script src="https://ajax.googleapis.com/ajax/libs/angularjs/1.7.9/angular.min.js"></script>
</head>
<body ng-app="myApp">
  <div>
    <input ng-model="name">
    <button ng-click="greet()">Greet</button>
  </div>
  <h3 ng-bind="greeting"></h3>
</body>
</html>

// main.js
angular.module('myApp', [])
  .controller('myCtrl', function($scope) {
    $scope.greeting = "";
    $scope.greet = function() {
      $scope.greeting = "Hello, " + $scope.name + "!";
    };
  });

React integration

@SpringBootApplication
public class SpringBootReactDemoApplication {

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

<!-- index.html -->
<html>
<head>
  <script src="https://unpkg.com/react@17/umd/react.production.min.js"></script>
  <script src="https://unpkg.com/react-dom@17/umd/react-dom.production.min.js"></script>
  <script src="main.js"></script>
</head>
<body>
  <div id="root"></div>
</body>
</html>

// main.js
const Greeting = () => <h1>Hello, World!</h1>;
ReactDOM.render(<Greeting />, document.getElementById("root"));

Vue.js integration

@SpringBootApplication
public class SpringBootVueDemoApplication {

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

<!-- index.html -->
<html>
<head>
  <script src="https://unpkg.com/vue@2.6.12/dist/vue.js"></script>
  <script src="main.js"></script>
</head>
<body>
  <div id="app"></div>
</body>
</html>

// main.js
new Vue({
  el: "#app",
  data: {
    message: "Hello, Vue!"
  },
  template: "<div>{{ message }}</div>"
});

Practical Case

Suppose you are building a simple web application that allows users to create a profile that includes name and age. Here's how to integrate the frontend using Spring Boot and Angular:

Java Backend

@Entity
public class Profile {

    private Long id;
    private String name;
    private Integer age;

    // getters and setters
}

@SpringBootApplication
public class SpringBootAngularDemoApplication {

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

Angular Frontend

<!-- profile.html -->
<div>
  <form>
    <label>Name:</label>
    <input type="text" [(ngModel)]="profile.name">
    <br>
    <label>Age:</label>
    <input type="number" [(ngModel)]="profile.age">
    <br>
    <button type="submit">Save</button>
  </form>
</div>

// profiles.controller.js
angular.module('myApp')
  .controller('ProfilesCtrl', function($scope, $http) {

    $scope.save = function() {
      $http.post('/profiles', $scope.profile)
        // handle server response
    };
  });

By following With this guide, you can easily integrate front-end frameworks with Java backends and create powerful web applications.

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