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我的代碼看起來會拋出異常我不知道的想法：谷歌App Engine不支持視覺API Runtime.addShutdownHook錯誤
@ApiMethod(name = "analyzeImage")
public Message analyzeImage(@Named("imgURL") String imgURL) {
try {
GoogleCredential credential = GoogleCredential.getApplicationDefault();
ImageAnnotatorClient vision = ImageAnnotatorClient.create();
// The path to the image file to annotate
String fileName = imgURL;
// Reads the image file into memory
Path path = Paths.get(fileName);
byte[] data = Files.readAllBytes(path);
ByteString imgBytes = ByteString.copyFrom(data);
// Builds the image annotation request
List<AnnotateImageRequest> requests = new ArrayList<>();
Image img = Image.newBuilder().setContent(imgBytes).build();
Feature feat = Feature.newBuilder().setType(Type.LABEL_DETECTION).build();
AnnotateImageRequest request = AnnotateImageRequest.newBuilder()
.addFeatures(feat)
.setImage(img)
.build();
requests.add(request);
// Performs label detection on the image file
BatchAnnotateImagesResponse response = vision.batchAnnotateImages(requests);
List<AnnotateImageResponse> responses = response.getResponsesList();
for (AnnotateImageResponse res : responses) {
if (res.hasError()) {
System.out.printf("Error: %s\n", res.getError().getMessage());
return new Message("Something broke");
}
for (EntityAnnotation annotation : res.getLabelAnnotationsList()) {
Map<FieldDescriptor, Object> m = annotation.getAllFields();
Set<FieldDescriptor> s = m.keySet();
for(FieldDescriptor key : s){
System.out.printf("%s : %s\n", key, m.get(key).toString());
}
}
}
} catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}
return new Message("Hello:" + imgURL);
}
在API Explorer中運行，這將引發：
java.lang.SecurityException: Google App Engine does not support Runtime.addShutdownHook
at com.google.appengine.runtime.Request.process-75407a6647252b61(Request.java)
at java.lang.Runtime.addShutdownHook(Runtime.java:45)
at com.google.common.util.concurrent.MoreExecutors$Application.addShutdownHook(MoreExecutors.java:232)
at com.google.common.util.concurrent.MoreExecutors$Application.addDelayedShutdownHook(MoreExecutors.java:204)
at com.google.common.util.concurrent.MoreExecutors$Application.getExitingScheduledExecutorService(MoreExecutors.java:196)
at com.google.common.util.concurrent.MoreExecutors$Application.getExitingScheduledExecutorService(MoreExecutors.java:228)
at com.google.common.util.concurrent.MoreExecutors.getExitingScheduledExecutorService(MoreExecutors.java:176)
at com.google.api.gax.grpc.InstantiatingExecutorProvider.getExecutor(InstantiatingExecutorProvider.java:51)
at com.google.api.gax.grpc.ChannelAndExecutor.create(ChannelAndExecutor.java:62)
at com.google.api.gax.grpc.ClientSettings.getChannelAndExecutor(ClientSettings.java:81)
at com.google.cloud.vision.spi.v1.ImageAnnotatorClient.<init>(ImageAnnotatorClient.java:120)
at com.google.cloud.vision.spi.v1.ImageAnnotatorClient.create(ImageAnnotatorClient.java:111)
at com.google.cloud.vision.spi.v1.ImageAnnotatorClient.create(ImageAnnotatorClient.java:102)
at photography.viks.ig.api.InstaSmartSvc.analyzeImage(InstaSmartSvc.java:93)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:42)
at com.google.api.server.spi.SystemService.invokeServiceMethod(SystemService.java:351)
at com.google.api.server.spi.handlers.EndpointsMethodHandler$RestHandler.handle(EndpointsMethodHandler.java:114)
at com.google.api.server.spi.handlers.EndpointsMethodHandler$RestHandler.handle(EndpointsMethodHandler.java:102)
at com.google.api.server.spi.dispatcher.PathDispatcher.dispatch(PathDispatcher.java:49)
at com.google.api.server.spi.EndpointsServlet.service(EndpointsServlet.java:71)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:717)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1166)
at com.google.api.control.ControlFilter.doFilter(ControlFilter.java:220)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at com.google.api.control.ConfigFilter.doFilter(ConfigFilter.java:120)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1157)
at org.mortbay.jetty.servlet.ServletHandler.handle(ServletHandler.java:388)
at org.mortbay.jetty.security.SecurityHandler.handle(SecurityHandler.java:216)
at org.mortbay.jetty.servlet.SessionHandler.handle(SessionHandler.java:182)
at org.mortbay.jetty.handler.ContextHandler.handle(ContextHandler.java:765)
at org.mortbay.jetty.webapp.WebAppContext.handle(WebAppContext.java:418)
at org.mortbay.jetty.handler.HandlerWrapper.handle(HandlerWrapper.java:152)
at org.mortbay.jetty.Server.handle(Server.java:326)
at org.mortbay.jetty.HttpConnection.handleRequest(HttpConnection.java:542)
at org.mortbay.jetty.HttpConnection$RequestHandler.headerComplete(HttpConnection.java:923)
at org.mortbay.jetty.HttpConnection.handle(HttpConnection.java:404)
at com.google.tracing.TraceContext$TraceContextRunnable.runInContext(TraceContext.java:453)
at com.google.tracing.TraceContext$TraceContextRunnable$1.run(TraceContext.java:460)
at com.google.tracing.CurrentContext.runInContext(CurrentContext.java:293)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContextNoUnref(TraceContext.java:319)
at com.google.tracing.TraceContext$AbstractTraceContextCallback.runInInheritedContext(TraceContext.java:311)
at com.google.tracing.TraceContext$TraceContextRunnable.run(TraceContext.java:457)
at java.lang.Thread.run(Thread.java:745)