我们将图片上传到GCS，然后使用ImagesService＃getServingUrl生成服务网址以调整大小和裁剪选项。 对于dev服务器生成的链接类似于：
http://localhost:8080/_ah/img/encoded_gs_key:L2dzL3NpdGl6ZW5zLWJhY2tlbmQtZGV2LXAuYXBwc3BvdC5jb20vZDM5YzMyYmYtY2YzMS00YTIwLTk3NmQtYjY4YWU3ZGZhZmU1
它在Mac / Linux开发PC上运行良好但是对于Windows我们得到了这个错误输出：
2017-09-21 17:15:31.755:WARN:oejs.ServletHandler:qtp2045766957-51: /_ah/img/encoded_gs_key:L2dzL3NpdGl6ZW5zLWJhY2tlbmQtZGV2LXAuYXBwc3BvdC5jb20vZDM5YzMyYmYtY2YzMS00YTIwLTk3NmQtYjY4YWU3ZGZhZmU1
java.nio.file.InvalidPathException: Illegal char <:> at index 79: C:\project\target\backend-1.0-SNAPSHOT\/_ah/img/encoded_gs_key:L2dzL3NpdGl6ZW5zLWJhY2tlbmQtZGV2LXAuYXBwc3BvdC5jb20vZDM5YzMyYmYtY2YzMS00YTIwLTk3NmQtYjY4YWU3ZGZhZmU1/index.html
at sun.nio.fs.WindowsPathParser.normalize(WindowsPathParser.java:182)
at sun.nio.fs.WindowsPathParser.parse(WindowsPathParser.java:153)
at sun.nio.fs.WindowsPathParser.parse(WindowsPathParser.java:77)
at sun.nio.fs.WindowsPath.parse(WindowsPath.java:94)
at sun.nio.fs.WindowsFileSystem.getPath(WindowsFileSystem.java:255)
at org.eclipse.jetty.util.resource.PathResource.<init>(PathResource.java:213)
at org.eclipse.jetty.util.resource.PathResource.addPath(PathResource.java:304)
at com.google.appengine.tools.development.jetty9.StaticFileFilter.getResource(StaticFileFilter.java:133)
at com.google.appengine.tools.development.jetty9.StaticFileFilter.maybeServeWelcomeFile(StaticFileFilter.java:172)
at com.google.appengine.tools.development.jetty9.StaticFileFilter.doFilter(StaticFileFilter.java:96)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1759)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectRequest(DevAppServerModulesFilter.java:366)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doDirectModuleRequest(DevAppServerModulesFilter.java:349)
at com.google.appengine.tools.development.DevAppServerModulesFilter.doFilter(DevAppServerModulesFilter.java:116)
at org.eclipse.jetty.servlet.ServletHandler$CachedChain.doFilter(ServletHandler.java:1751)
at org.eclipse.jetty.servlet.ServletHandler.doHandle(ServletHandler.java:582)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:143)
at org.eclipse.jetty.security.SecurityHandler.handle(SecurityHandler.java:524)
at org.eclipse.jetty.server.session.SessionHandler.doHandle(SessionHandler.java:226)
at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:1180)
at org.eclipse.jetty.servlet.ServletHandler.doScope(ServletHandler.java:512)
at org.eclipse.jetty.server.session.SessionHandler.doScope(SessionHandler.java:185)
at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1112)
at com.google.appengine.tools.development.jetty9.DevAppEngineWebAppContext.doScope(DevAppEngineWebAppContext.java:112)
at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)
at com.google.appengine.tools.development.jetty9.JettyContainerService$ApiProxyHandler.handle(JettyContainerService.java:597)
at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:134)
at org.eclipse.jetty.server.Server.handle(Server.java:534)
at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:320)
at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:251)
at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:283)
at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:108)
at org.eclipse.jetty.io.SelectChannelEndPoint$2.run(SelectChannelEndPoint.java:93)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.executeProduceConsume(ExecuteProduceConsume.java:303)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.produceConsume(ExecuteProduceConsume.java:148)
at org.eclipse.jetty.util.thread.strategy.ExecuteProduceConsume.run(ExecuteProduceConsume.java:136)
at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:671)
at org.eclipse.jetty.util.thread.QueuedThreadPool$2.run(QueuedThreadPool.java:589)
at java.lang.Thread.run(Thread.java:748)
看起来像GCS存根实现中的错误。有人知道解决方法吗？