小贝子编程

来自服务器的JavaFX损坏的图像导致应用程序崩溃



我正试图将Base64图像字符串和一些url转换为图像形式，但我从服务器获得的一个或多个图像似乎已损坏。我可以挑选他们每手，但我需要一个代码解决方案。我写了方法prepareAvatar它获得一个字符串头像它要么是一个Base64字符串要么是一个URL，像imgur或类似的东西

public Circle prepareAvatar(String avatar) {
Image image;
if (avatar == null || avatar.equals("")) {
image = defaultAvatar;
}else{
Image newImage = new Image(avatar);
if(newImage == null){
image = defaultAvatar;
}else{
image = newImage;
}
}
Circle avatarCircle = new Circle();
avatarCircle.setRadius(Constants.AVATAR_SIZE);
avatarCircle.setStroke(Color.BLACK);
avatarCircle.setFill(new ImagePattern(image));
return avatarCircle;
}

目前我只是试图过滤掉所有的头像是空的或"这似乎是有效的。因为我得到了异常JavaFX应用程序线程中的异常java.lang.IllegalArgumentException: Image必须是非空的"我试图创建一个新的图像newImage实例，只是检查它是否不为空。这似乎不起作用，我仍然得到相同的异常。加:

Exception in thread "JavaFX Application Thread" java.lang.IllegalArgumentException: Image must be non-null
at com.sun.prism.paint.ImagePattern.<init>(ImagePattern.java:47)
at com.sun.prism.paint.ImagePattern.<init>(ImagePattern.java:65)
at com.sun.javafx.tk.quantum.QuantumToolkit.createImagePatternPaint(QuantumToolkit.java:981)
at com.sun.javafx.tk.Toolkit.getPaint(Toolkit.java:680)
at javafx.scene.paint.ImagePattern.acc_getPlatformPaint(ImagePattern.java:292)
at javafx.scene.paint.Paint$1.getPlatformPaint(Paint.java:48)
at javafx.scene.shape.Shape.updatePGShape(Shape.java:963)
at javafx.scene.shape.Shape.doUpdatePeer(Shape.java:998)
at javafx.scene.shape.Shape$1.doUpdatePeer(Shape.java:131)
at com.sun.javafx.scene.shape.ShapeHelper.updatePeerImpl(ShapeHelper.java:74)
at com.sun.javafx.scene.shape.CircleHelper.updatePeerImpl(CircleHelper.java:64)
at com.sun.javafx.scene.NodeHelper.updatePeer(NodeHelper.java:103)
at javafx.scene.Node.syncPeer(Node.java:715)
at javafx.scene.Scene$ScenePulseListener.synchronizeSceneNodes(Scene.java:2399)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2545)
at com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:421)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:420)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:450)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:575)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:555)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:548)
at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:353)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:184)
at java.base/java.lang.Thread.run(Thread.java:833)
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException: Cannot invoke "javafx.scene.Node.getScene()" because "<local2>" is null
at javafx.scene.Scene$ScenePulseListener.synchronizeSceneNodes(Scene.java:2398)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2545)
at com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:421)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:420)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:450)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:575)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:555)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:548)
at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:353)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:184)
at java.base/java.lang.Thread.run(Thread.java:833)
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException: Cannot invoke "javafx.scene.Node.getScene()" because "<local2>" is null
at javafx.scene.Scene$ScenePulseListener.synchronizeSceneNodes(Scene.java:2398)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2545)
at com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:421)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:420)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:450)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:575)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:555)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:548)
at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:353)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:184)
at java.base/java.lang.Thread.run(Thread.java:833)
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException: Cannot invoke "javafx.scene.Node.getScene()" because "<local2>" is null
at javafx.scene.Scene$ScenePulseListener.synchronizeSceneNodes(Scene.java:2398)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2545)
at com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:421)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:420)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:450)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:575)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:555)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:548)
at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:353)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:184)
at java.base/java.lang.Thread.run(Thread.java:833)
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException: Cannot invoke "javafx.scene.Node.getScene()" because "<local2>" is null
at javafx.scene.Scene$ScenePulseListener.synchronizeSceneNodes(Scene.java:2398)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2545)
at com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:421)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:420)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:450)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:575)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:555)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:548)
at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:353)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:184)
at java.base/java.lang.Thread.run(Thread.java:833)
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException: Cannot invoke "javafx.scene.Node.getScene()" because "<local2>" is null
at javafx.scene.Scene$ScenePulseListener.synchronizeSceneNodes(Scene.java:2398)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2545)
at com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:421)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:420)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:450)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:575)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:555)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:548)
at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:353)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:184)
at java.base/java.lang.Thread.run(Thread.java:833)
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException: Cannot invoke "javafx.scene.Node.getScene()" because "<local2>" is null
at javafx.scene.Scene$ScenePulseListener.synchronizeSceneNodes(Scene.java:2398)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2545)
at com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:421)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:420)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:450)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:575)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:555)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:548)
at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:353)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:184)
at java.base/java.lang.Thread.run(Thread.java:833)
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException: Cannot invoke "javafx.scene.Node.getScene()" because "<local2>" is null
at javafx.scene.Scene$ScenePulseListener.synchronizeSceneNodes(Scene.java:2398)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2545)
at com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:421)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:420)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:450)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:575)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:555)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:548)
at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:353)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:184)
at java.base/java.lang.Thread.run(Thread.java:833)
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException: Cannot invoke "javafx.scene.Node.getScene()" because "<local2>" is null
at javafx.scene.Scene$ScenePulseListener.synchronizeSceneNodes(Scene.java:2398)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2545)
at com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:421)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:420)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:450)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:575)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:555)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:548)
at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:353)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:184)
at java.base/java.lang.Thread.run(Thread.java:833)
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException: Cannot invoke "javafx.scene.Node.getScene()" because "<local2>" is null
at javafx.scene.Scene$ScenePulseListener.synchronizeSceneNodes(Scene.java:2398)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2545)
at com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:421)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:420)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:450)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:575)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:555)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:548)
at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:353)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:184)
at java.base/java.lang.Thread.run(Thread.java:833)
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException: Cannot invoke "javafx.scene.Node.getScene()" because "<local2>" is null
at javafx.scene.Scene$ScenePulseListener.synchronizeSceneNodes(Scene.java:2398)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2545)
at com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:421)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:420)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:450)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:575)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:555)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:548)
at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:353)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:184)
at java.base/java.lang.Thread.run(Thread.java:833)
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException: Cannot invoke "javafx.scene.Node.getScene()" because "<local2>" is null
at javafx.scene.Scene$ScenePulseListener.synchronizeSceneNodes(Scene.java:2398)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2545)
at com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:421)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:420)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:450)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:575)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:555)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:548)
at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:353)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:184)
at java.base/java.lang.Thread.run(Thread.java:833)
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException: Cannot invoke "javafx.scene.Node.getScene()" because "<local2>" is null
at javafx.scene.Scene$ScenePulseListener.synchronizeSceneNodes(Scene.java:2398)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2545)
at com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:421)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:420)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:450)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:575)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:555)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:548)
at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:353)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:184)
at java.base/java.lang.Thread.run(Thread.java:833)
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException: Cannot invoke "javafx.scene.Node.getScene()" because "<local2>" is null
at javafx.scene.Scene$ScenePulseListener.synchronizeSceneNodes(Scene.java:2398)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2545)
at com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:421)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:420)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:450)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:575)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:555)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:548)
at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:353)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:184)
at java.base/java.lang.Thread.run(Thread.java:833)
Exception in thread "JavaFX Application Thread" java.lang.NullPointerException: Cannot invoke "javafx.scene.Node.getScene()" because "<local2>" is null
at javafx.scene.Scene$ScenePulseListener.synchronizeSceneNodes(Scene.java:2398)
at javafx.scene.Scene$ScenePulseListener.pulse(Scene.java:2545)
at com.sun.javafx.tk.Toolkit.lambda$runPulse$2(Toolkit.java:421)
at java.base/java.security.AccessController.doPrivileged(AccessController.java:399)
at com.sun.javafx.tk.Toolkit.runPulse(Toolkit.java:420)
at com.sun.javafx.tk.Toolkit.firePulse(Toolkit.java:450)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:575)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulse(QuantumToolkit.java:555)
at com.sun.javafx.tk.quantum.QuantumToolkit.pulseFromQueue(QuantumToolkit.java:548)
at com.sun.javafx.tk.quantum.QuantumToolkit.lambda$runToolkit$11(QuantumToolkit.java:353)
at com.sun.glass.ui.InvokeLaterDispatcher$Future.run(InvokeLaterDispatcher.java:96)
at com.sun.glass.ui.win.WinApplication._runLoop(Native Method)
at com.sun.glass.ui.win.WinApplication.lambda$runLoop$3(WinApplication.java:184)
at java.base/java.lang.Thread.run(Thread.java:833)

您应该了解一下Java异常处理。您必须捕获可能由于映像生成失败而导致的异常。如果您使用的是IDE，您可以让它为您创建这个。https://docs.oracle.com/javase/tutorial/essential/exceptions/catch.html

我也怀疑Base64编码的图像可以用这种方式解码。您可能必须通过其他方法将它们转换回实像。将base64字符串转换为图像或将原始编码数据转换为数据URL，如下所示:https://stackoverflow.com/a/72482868/4262407

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