Spring Boot java中线程“main”java.awt.Headless

Question

我尝试使用intellij运行netbeans IDE创建的JFrameForm，我从netbeans复制源代码并将其粘贴到新的java类中，并在主函数中创建对象并设置jframe包含的类的可见性并运行它，它给出了以下错误

2019-09-21 17:36:31.363Exception in thread "main" java.awt.HeadlessException

at java.desktop/java.awt.GraphicsEnvironment.checkHeadless(GraphicsEnvironment.java:208)

INFO    at java.desktop/java.awt.Window.<init>(Window.java:548)

4744    at java.desktop/java.awt.Frame.<init>(Frame.java:423)

---     at java.desktop/java.awt.Frame.<init>(Frame.java:388)

[       Thread-1]   at java.desktop/javax.swing.JFrame.<init>(JFrame.java:180)

j.LocalContainerEntityManagerFactoryBean    at com.sunTravel.frontend.uiComponents.MainFrame.<init>    

(MainFrame.java:19)

:   at com.sunTravel.frontend.FrontendApplication.main(FrontendApplication.java:12)

Closing JPA EntityManagerFactory for persistence unit 'default'

2019-09-21 17:36:31.364  INFO 4744 --- [       Thread-1] .SchemaDropperImpl$DelayedDropActionImpl :         

HHH000477: Starting delayed evictData of schema as part of SessionFactory shut-down'

2019-09-21 17:36:31.367  INFO 4744 --- [       Thread-1] com.zaxxer.hikari.HikariDataSource       :     

HikariPool-1 - Shutdown initiated...

2019-09-21 17:36:31.370  INFO 4744 --- [       Thread-1] com.zaxxer.hikari.HikariDataSource       : 

HikariPool-1 - Shutdown completed.

Process finished with exit code 1

我的源代码如下，如何解决这个问题？

@SpringBootApplication

public class FrontendApplication {

    public static void main(String[] args) {

        SpringApplication.run(FrontendApplication.class, args);

        MainFrame mf = new MainFrame();

        mf.setVisible(true);

    }

}

Answer 1

尝试禁用无头属性，如下所示。 您必须在创建/显示 JFrame 之前执行此操作。System.setProperty("java.awt.headless", "false"); //Disables headless一个例子：SpringApplication.run(MyClass.class, args);System.setProperty("java.awt.headless", "false");SwingUtilities.invokeLater(() -> {&nbsp; &nbsp; JFrame f = new JFrame("myframe");&nbsp; &nbsp; f.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);&nbsp; &nbsp; f.setVisible(true);});

Answer 2

尝试这个public static void main(String[] args) {    SpringApplicationBuilder builder = new SpringApplicationBuilder(DemoApplication.class);    builder.headless(false);    builder.run(args);    MainFrame mf = new MainFrame();    mf.setVisible(true);}