springboot做桌面弹框运行报错

原因是springboot默认是headless模式，需要启动前手动改成false，

方法：springboot启动类中的

ConfigurableApplicationContext run = SpringApplication.run(Application.class, args);

 改成：

SpringApplicationBuilder builder=new SpringApplicationBuilder(Application.class);
builder.headless(false);
ConfigurableApplicationContext run = builder.run(args);