Java awt Desktop 无法调用系统浏览器

用Spring boot搭建项目时，希望在项目启动完后能自动谈出首页。

就用了java.awt.Desktop类

        if (Desktop.isDesktopSupported()) {            try {                // 弹出浏览器 - 显示HTTP接口(https)                Desktop.getDesktop().browse(new URI("https://blog.csdn.net/weixin_42156742/article/details/81383628"));            } catch (Exception e) {                LOGGER.info(e.getMessage());            }        }

结果在测试类里可以正常访问，在启动项目后却无法弹出网页。

public static synchronized Desktop getDesktop(){        if (GraphicsEnvironment.isHeadless()) throw new HeadlessException();        if (!Desktop.isDesktopSupported()) {            throw new UnsupportedOperationException("Desktop API is not " +                                                    "supported on the current platform");        }        sun.awt.AppContext context = sun.awt.AppContext.getAppContext();        Desktop desktop = (Desktop)context.get(Desktop.class);        if (desktop == null) {            desktop = new Desktop();            context.put(Desktop.class, desktop);        }        return desktop;    }

private static boolean getHeadlessProperty() {        if (headless == null) {            AccessController.doPrivileged((PrivilegedAction) () -> {                String nm = System.getProperty("java.awt.headless");                if (nm == null) {                    /* No need to ask for DISPLAY when run in a browser */                    if (System.getProperty("javaplugin.version") != null) {                        headless = defaultHeadless = Boolean.FALSE;                    } else {                        String osName = System.getProperty("os.name");                        if (osName.contains("OS X") && "sun.awt.HToolkit".equals(                                System.getProperty("awt.toolkit")))                        {                            headless = defaultHeadless = Boolean.TRUE;                        } else {                            final String display = System.getenv("DISPLAY");                            headless = defaultHeadless =                                ("Linux".equals(osName) ||                                 "SunOS".equals(osName) ||                                 "FreeBSD".equals(osName) ||                                 "NetBSD".equals(osName) ||                                 "OpenBSD".equals(osName) ||                                 "AIX".equals(osName)) &&                                 (display == null || display.trim().isEmpty());                        }                    }                } else {                    headless = Boolean.valueOf(nm);                }                return null;            });        }        return headless;    }

往下排查原因，发现 getHeadlessProperty 方法中 System.getProperty("java.awt.headless") 处获取系统参数时返回了true。

导致直接抛出了HeadlessException异常。Headless模式是在缺少显示屏、键盘或者鼠标时的系统配置，这是此处的参数导致了无法弹出指定窗口。

System.setProperty("java.awt.headless", "false");

所以需要提前设置参数为false。