SpringBoot整合JavaFx（十三）

在Java中，基本上万物可springboot… 整合了spring全家桶，你可以很方便整合它的生态框架。
JavaFx也能整合springboot，下面我就演示javafx+springboot操作数据库吧，学习了下面的方式，针对其他main工程也适用。
整合过程主要分三步：

1、引入springboot依赖
2、配置
3、加载fxml时注入bean

特别注意第三点，使用javafx提供的控制器工厂能轻松注入。开发模式类似MVC，只不过视图变成了fxml。

一、配置

用IDEA初始化一个springboot项目，，Maven依赖如下

   <?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>
    <groupId>top.lingkang</groupId>
    <artifactId>springboot-javafx-demo</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>springboot-javafx-demo</name>
    <description>Demo project for Spring Boot</description>

    <properties>
        <java.version>1.8</java.version>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
        <spring-boot.version>2.3.7.RELEASE</spring-boot.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jdbc</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-devtools</artifactId>
            <scope>runtime</scope>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <optional>true</optional>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
            <exclusions>
                <exclusion>
                    <groupId>org.junit.vintage</groupId>
                    <artifactId>junit-vintage-engine</artifactId>
                </exclusion>
            </exclusions>
        </dependency>
    </dependencies>

    <dependencyManagement>
        <dependencies>
            <dependency>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-dependencies</artifactId>
                <version>${spring-boot.version}</version>
                <type>pom</type>
                <scope>import</scope>
            </dependency>
        </dependencies>
    </dependencyManagement>

    <build>
        <plugins>
            <plugin>
                <groupId>org.apache.maven.plugins</groupId>
                <artifactId>maven-compiler-plugin</artifactId>
                <version>3.8.1</version>
                <configuration>
                    <source>1.8</source>
                    <target>1.8</target>
                    <encoding>UTF-8</encoding>
                </configuration>
            </plugin>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <version>2.3.7.RELEASE</version>
                <configuration>
                    <mainClass>top.lingkang.springbootjavafxdemo.SpringbootJavafxDemoApplication</mainClass>
                </configuration>
                <executions>
                    <execution>
                        <id>repackage</id>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>

配置application.properties

spring.main.web-application-type=none
spring.main.allow-bean-definition-overriding=true

# 应用名称
spring.application.name=springboot-javafx-demo
# 数据库驱动：
spring.datasource.driver-class-name=com.mysql.cj.jdbc.Driver
# 数据源名称
spring.datasource.name=defaultDataSource
# 数据库连接地址
spring.datasource.url=jdbc:mysql://localhost:3306/test?serverTimezone=UTC
# 数据库用户名&密码：
spring.datasource.username=root
spring.datasource.password=123456

二、编写启动类

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Scene;
import javafx.scene.layout.VBox;
import javafx.stage.Stage;
import javafx.util.Callback;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;

import java.net.URL;

@SpringBootApplication
public class SpringbootJavafxDemoApplication extends Application {
	// 任何地方都可以通过这个applicationContext获取springboot的上下文
    public static ConfigurableApplicationContext applicationContext;
    private static String[] args;

    @Override
    public void start(Stage primaryStage) throws Exception {
        URL resource = getClass().getResource("/fxml/login.fxml");
        if (resource == null) {
            throw new Exception();
        }
        // 加载 fxml 下面的逻辑可以单独封装
        FXMLLoader loader = new FXMLLoader(resource);
        loader.setControllerFactory(new Callback<Class<?>, Object>() {
            @Override
            public Object call(Class<?> param) {
                // 控制器工厂提供bean注入，此处的缺点是不能根据bean名字注入，只能通过class类型注入bean
                // 解决方案：
                // 1、SpringbootJavafxDemoApplication.applicationContext.getBean("Bean Name", Bean.class);
                // 2、@Autowired private ApplicationContext applicationContext;
                // Object bean_name = applicationContext.getBean("bean Name", Bean.class);
                return applicationContext.getBean(param);
            }
        });
        // 加载
        VBox root = loader.load();

        primaryStage.setScene(new Scene(root));
        primaryStage.show();
    }


    public static void main(String[] args) {
        SpringbootJavafxDemoApplication.args = args;
        launch(args);
    }

    @Override
    public void init() throws Exception {
        // 启动springboot
        applicationContext = SpringApplication.run(SpringbootJavafxDemoApplication.class, args);
    }

    @Override
    public void stop() throws Exception {
        // 关闭springboot
        applicationContext.stop();
    }
}

/fxml/login.fxml内容如下：

<?xml version="1.0" encoding="UTF-8"?>

<?import javafx.scene.control.*?>
<?import javafx.scene.layout.AnchorPane?>
<?import javafx.scene.layout.VBox?>
<?import javafx.scene.text.Font?>
<VBox maxHeight="-Infinity" maxWidth="-Infinity" minHeight="-Infinity" minWidth="-Infinity" prefHeight="330.0"
      fx:controller="top.oneit.jdownload.controller.LoginController"
      prefWidth="430.0" xmlns="http://javafx.com/javafx/11" xmlns:fx="http://javafx.com/fxml/1">
    <AnchorPane prefHeight="330.0" prefWidth="430.0" style="-fx-background-color: white;">
        <children>
            <Label layoutX="99.0" layoutY="183.0" text="账 号：">
                <font>
                    <Font size="14.0"/>
                </font>
            </Label>
            <Label layoutX="99.0" layoutY="217.0" text="密 码：">
                <font>
                    <Font size="14.0"/>
                </font>
            </Label>
            <Button fx:id="loginButton" layoutX="97.0" layoutY="270.0" mnemonicParsing="false" prefHeight="35.0" prefWidth="236.0"
                    style="-fx-background-color: #1EC6FC;" text="登  录" textAlignment="CENTER" textFill="WHITE">
                <font>
                    <Font size="14.0"/>
                </font>
            </Button>
            <CheckBox layoutX="98.0" layoutY="243.0" mnemonicParsing="false" text="自动登录" textFill="#a6a6a6"/>
            <CheckBox layoutX="188.0" layoutY="243.0" mnemonicParsing="false" text="记住密码" textFill="#a6a6a6"/>
            <Label layoutX="277.0" layoutY="242.0" text="找回密码" textFill="#a6a6a6">
                <font>
                    <Font size="14.0"/>
                </font>
            </Label>
            <TextField layoutX="146.0" layoutY="183.0" prefHeight="23.0" prefWidth="182.0"/>
            <PasswordField layoutX="146.0" layoutY="216.0" prefHeight="23.0" prefWidth="182.0"/>
        </children>
    </AnchorPane>
</VBox>

编写一个controller触发按钮事件

import javafx.event.ActionEvent;
import javafx.event.EventHandler;
import javafx.fxml.FXML;
import javafx.fxml.Initializable;
import javafx.scene.control.Button;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Controller;

import java.net.URL;
import java.util.List;
import java.util.ResourceBundle;

/**
 * @author lingkang
 * @date 2021/11/9
 */
@Controller
public class LoginController implements Initializable {
    @FXML
    private Button loginButton;
    @Autowired
    private JdbcTemplate jdbcTemplate;

    @Override
    public void initialize(URL url, ResourceBundle resourceBundle) {
        loginButton.setOnAction(new EventHandler<ActionEvent>() {
            @Override
            public void handle(ActionEvent actionEvent) {
                List res = jdbcTemplate.queryForList("select * from t_user");
                if (!res.isEmpty()) {
                    System.out.println(res.toString());
                }
                System.out.println("你点击了我！");
            }
        });
    }
}