Question

如何使用扩展了javafx.application.Application且不包含主要方法的maven在适当的地方启动spring-boot项目？每次我尝试使用Maven启动它时，都会显示以下错误。

错误消息：

[错误]无法在项目chatClient上执行目标org.springframework.boot：spring-boot-maven-plugin：2.0.5.RELEASE：run（default-cli）：运行时发生异常。指定的mainClass不包含带有适当签名的main方法。：XX.XXX.ChatClient.main（[Ljava.lang.String;）-> [帮助1]

pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xmlns="http://maven.apache.org/POM/4.0.0"
         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>XX.XXX</groupId>
    <artifactId>chatClient</artifactId>
    <version>1.1.4</version>
    <packaging>jar</packaging>

    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.0.5.RELEASE</version>
    </parent>

    <properties>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
        <start-class>XX.XXX.ChatClient</start-class>
    </properties>

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

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>${start-class}</mainClass>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>
</project>

ChatClient.java

import javafx.application.Application;
import javafx.fxml.FXMLLoader;
import javafx.scene.Parent;
import javafx.scene.Scene;
import javafx.stage.Stage;
import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.context.ConfigurableApplicationContext;
import java.io.IOException;

@SpringBootApplication
public class ChatClient extends Application {

    private ConfigurableApplicationContext springContext;
    private Parent root;

    @Override
    public void init() throws IOException {
        springContext = SpringApplication.run(ChatClient.class);

        FXMLLoader fxmlLoader = new FXMLLoader(getClass().getResource("/view/root.fxml"));
        fxmlLoader.setControllerFactory(springContext::getBean);
        root = fxmlLoader.load();
    }

    @Override
    public void start(Stage primaryStage) {
        primaryStage.setScene(new Scene(root));
        primaryStage.setTitle("Chat client");
        primaryStage.centerOnScreen();
        primaryStage.show();
    }

    @Override
    public void stop() {
        springContext.stop();
    }
}

root.fxml

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

<?import javafx.scene.layout.BorderPane?>
<BorderPane></BorderPane>

Answer 1

替换：

 <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
                <configuration>
                    <mainClass>${start-class}</mainClass>
                </configuration>
                <executions>
                    <execution>
                        <goals>
                            <goal>repackage</goal>
                        </goals>
                    </execution>
                </executions>
            </plugin>

具有：

 <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>

无需指定mainClass。

Here，您有完整的示例。

更新

现在，我注意到您没有主要方法。将此代码添加到ChatClient类中：

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

使用“ mvn spring-boot：run”启动JavaFX Spring项目

1 个答案: