Question

我试图通过跟踪this tutorial逐步使用最新的google-maps-api-v3 jar，但当我尝试在我的应用程序中使用它时，我得到了这个例外：

    Loading modules
   ht.haitidataservices.simplemap.SimpleMap
      Loading inherited module 'com.google.gwt.maps.Maps'
         [ERROR] Unable to find 'com/google/gwt/maps/Maps.gwt.xml' on your classpath; could be a typo, or maybe you forgot to include a classpath entry for source?
      [ERROR] Line 5: Unexpected exception while processing element 'inherits'
com.google.gwt.core.ext.UnableToCompleteException: (see previous log entries)
    at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad(ModuleDefLoader.java:262)
    at com.google.gwt.dev.cfg.ModuleDefSchema$BodySchema.__inherits_begin(ModuleDefSchema.java:495)
    at sun.reflect.GeneratedMethodAccessor1.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.google.gwt.dev.util.xml.HandlerMethod.invokeBegin(HandlerMethod.java:230)
    at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.startElement(ReflectiveParser.java:274)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
    at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.parse(ReflectiveParser.java:331)
    at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.access$100(ReflectiveParser.java:48)
    at com.google.gwt.dev.util.xml.ReflectiveParser.parse(ReflectiveParser.java:402)
    at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad(ModuleDefLoader.java:280)
    at com.google.gwt.dev.cfg.ModuleDefLoader$1.load(ModuleDefLoader.java:192)
    at com.google.gwt.dev.cfg.ModuleDefLoader.doLoadModule(ModuleDefLoader.java:308)
    at com.google.gwt.dev.cfg.ModuleDefLoader.loadFromClassPath(ModuleDefLoader.java:151)
    at com.google.gwt.dev.DevModeBase.loadModule(DevModeBase.java:979)
    at com.google.gwt.dev.DevMode.loadModule(DevMode.java:548)
    at com.google.gwt.dev.DevMode.doStartup(DevMode.java:436)
    at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1045)
    at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:804)
    at com.google.gwt.dev.DevMode.main(DevMode.java:309)
      [ERROR] Failure while parsing XML
com.google.gwt.core.ext.UnableToCompleteException: (see previous log entries)
    at com.google.gwt.dev.util.xml.DefaultSchema.onHandlerException(DefaultSchema.java:58)
    at com.google.gwt.dev.util.xml.Schema.onHandlerException(Schema.java:66)
    at com.google.gwt.dev.util.xml.Schema.onHandlerException(Schema.java:66)
    at com.google.gwt.dev.util.xml.HandlerMethod.invokeBegin(HandlerMethod.java:240)
    at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.startElement(ReflectiveParser.java:274)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.startElement(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.AbstractXMLDocumentParser.emptyElement(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanStartElement(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl$FragmentContentDriver.next(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentScannerImpl.next(Unknown Source)
    at com.sun.org.apache.xerces.internal.impl.XMLDocumentFragmentScannerImpl.scanDocument(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.XML11Configuration.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.XMLParser.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(Unknown Source)
    at com.sun.org.apache.xerces.internal.jaxp.SAXParserImpl$JAXPSAXParser.parse(Unknown Source)
    at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.parse(ReflectiveParser.java:331)
    at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.access$100(ReflectiveParser.java:48)
    at com.google.gwt.dev.util.xml.ReflectiveParser.parse(ReflectiveParser.java:402)
    at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad(ModuleDefLoader.java:280)
    at com.google.gwt.dev.cfg.ModuleDefLoader$1.load(ModuleDefLoader.java:192)
    at com.google.gwt.dev.cfg.ModuleDefLoader.doLoadModule(ModuleDefLoader.java:308)
    at com.google.gwt.dev.cfg.ModuleDefLoader.loadFromClassPath(ModuleDefLoader.java:151)
    at com.google.gwt.dev.DevModeBase.loadModule(DevModeBase.java:979)
    at com.google.gwt.dev.DevMode.loadModule(DevMode.java:548)
    at com.google.gwt.dev.DevMode.doStartup(DevMode.java:436)
    at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1045)
    at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:804)
    at com.google.gwt.dev.DevMode.main(DevMode.java:309)
      [ERROR] Unexpected error while processing XML
com.google.gwt.core.ext.UnableToCompleteException: (see previous log entries)
    at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.parse(ReflectiveParser.java:355)
    at com.google.gwt.dev.util.xml.ReflectiveParser$Impl.access$100(ReflectiveParser.java:48)
    at com.google.gwt.dev.util.xml.ReflectiveParser.parse(ReflectiveParser.java:402)
    at com.google.gwt.dev.cfg.ModuleDefLoader.nestedLoad(ModuleDefLoader.java:280)
    at com.google.gwt.dev.cfg.ModuleDefLoader$1.load(ModuleDefLoader.java:192)
    at com.google.gwt.dev.cfg.ModuleDefLoader.doLoadModule(ModuleDefLoader.java:308)
    at com.google.gwt.dev.cfg.ModuleDefLoader.loadFromClassPath(ModuleDefLoader.java:151)
    at com.google.gwt.dev.DevModeBase.loadModule(DevModeBase.java:979)
    at com.google.gwt.dev.DevMode.loadModule(DevMode.java:548)
    at com.google.gwt.dev.DevMode.doStartup(DevMode.java:436)
    at com.google.gwt.dev.DevModeBase.startUp(DevModeBase.java:1045)
    at com.google.gwt.dev.DevModeBase.run(DevModeBase.java:804)
    at com.google.gwt.dev.DevMode.main(DevMode.java:309)
[ERROR] shell failed in doStartup method

这似乎是一个模块问题，说它无法找到com/google/gwt/maps/Maps.gwt.xml。我不明白，因为我遵循教程，我确信我所做的是正确的。我怎么解决这个问题？谢谢你的帮助

我目前正在使用Eclipse Indigo在64位Windows 7系统上开发JDK 1.6。

[编辑]为了精确，我在我的应用程序CLASSPATH中添加了google-maps jar，并在我的模块文件中添加了继承行：

<module rename-to='egliseenquete'>
  <!-- Inherit the core Web Toolkit stuff.                        -->
  <inherits name='com.google.gwt.user.User'/>
  <inherits name='com.google.gwt.maps.Maps' />
    ....
   </module>

[编辑]我在我的CLASSPATH上添加了地图gwt jar，现在我得到了这个例外：

 12:27:28.703 [ERROR] [egliseenquete] Unable to load module entry point class ht.haitidataservices.egliseenquete.client.EgliseEnquete (see associated exception for details)

java.lang.RuntimeException: Deferred binding failed for 'com.google.gwt.maps.client.impl.MapOptionsImpl' (did you forget to inherit a required module?)
    at com.google.gwt.dev.shell.GWTBridgeImpl.create(GWTBridgeImpl.java:53)
    at com.google.gwt.core.client.GWT.create(GWT.java:98)
    at com.google.gwt.maps.client.impl.MapOptionsImpl.&lt;clinit&gt;(MapOptionsImpl.java:31)
    at com.google.gwt.maps.client.MapOptions.&lt;init&gt;(MapOptions.java:40)
    at ht.haitidataservices.egliseenquete.client.EgliseEnquete.buildMap(EgliseEnquete.java:100)
    at ht.haitidataservices.egliseenquete.client.EgliseEnquete.onModuleLoad(EgliseEnquete.java:94)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.google.gwt.dev.shell.ModuleSpace.onLoad(ModuleSpace.java:396)
    at com.google.gwt.dev.shell.OophmSessionHandler.loadModule(OophmSessionHandler.java:193)
    at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:510)
    at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:352)
    at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.IncompatibleClassChangeError: Found interface com.google.gwt.core.ext.typeinfo.JClassType, but class was expected
    at com.google.gwt.jsio.rebind.JSWrapperGenerator.generate(JSWrapperGenerator.java:276)
    at com.google.gwt.core.ext.GeneratorExtWrapper.generate(GeneratorExtWrapper.java:48)
    at com.google.gwt.core.ext.GeneratorExtWrapper.generateIncrementally(GeneratorExtWrapper.java:60)
    at com.google.gwt.dev.javac.StandardGeneratorContext.runGeneratorIncrementally(StandardGeneratorContext.java:681)
    at com.google.gwt.dev.cfg.RuleGenerateWith.realize(RuleGenerateWith.java:41)
    at com.google.gwt.dev.shell.StandardRebindOracle$Rebinder.rebind(StandardRebindOracle.java:74)
    at com.google.gwt.dev.shell.StandardRebindOracle.rebind(StandardRebindOracle.java:285)
    at com.google.gwt.dev.shell.ShellModuleSpaceHost.rebind(ShellModuleSpaceHost.java:141)
    at com.google.gwt.dev.shell.ModuleSpace.rebind(ModuleSpace.java:585)
    at com.google.gwt.dev.shell.ModuleSpace.rebindAndCreate(ModuleSpace.java:455)
    at com.google.gwt.dev.shell.GWTBridgeImpl.create(GWTBridgeImpl.java:49)
    at com.google.gwt.core.client.GWT.create(GWT.java:98)
    at com.google.gwt.maps.client.impl.MapOptionsImpl.&lt;clinit&gt;(MapOptionsImpl.java:31)
    at com.google.gwt.maps.client.MapOptions.&lt;init&gt;(MapOptions.java:40)
    at ht.haitidataservices.egliseenquete.client.EgliseEnquete.buildMap(EgliseEnquete.java:100)
    at ht.haitidataservices.egliseenquete.client.EgliseEnquete.onModuleLoad(EgliseEnquete.java:94)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at com.google.gwt.dev.shell.ModuleSpace.onLoad(ModuleSpace.java:396)
    at com.google.gwt.dev.shell.OophmSessionHandler.loadModule(OophmSessionHandler.java:193)
    at com.google.gwt.dev.shell.BrowserChannelServer.processConnection(BrowserChannelServer.java:510)
    at com.google.gwt.dev.shell.BrowserChannelServer.run(BrowserChannelServer.java:352)
    at java.lang.Thread.run(Unknown Source)

我该如何解决这个问题？请求帮助!!!

Answer 1

我遇到了类似的问题。

我最终使用了this教程，效果很好。它使用的是gwt-maps-1.1.1.zip（此版本的发布日期更新）和最新的GWT。

有一点需要注意的是，如果您正在查看这两个教程以确保使用：

<inherits name='com.google.gwt.maps.GoogleMaps' />

而不是

<inherits name='com.google.gwt.maps.Maps' />

因为他们更改了jar文件的com.google.gwt.map包中的文件名。

我怀疑如果您检查地图jar文件的com.google.gwt.map包中的文件名，那么您用来继承的文件名是关闭的。然后将该行更改为我建议的应修复它。

希望这有帮助！

干杯

Answer 2

查看jar文件后，我注意到xml文件的路径继承不正确。

＆lt; inherits name ='com.google.gwt.maps.GoogleMaps'/＆gt; - 错误的路径

＆lt; inherits name ='com.google.maps.gwt.GoogleMaps'/＆gt; - 是正确的路径

浪费了很多时间来解决这个问题，但这是解决方案。谷歌在这方面的教程犯了错误。

在GWT上使用谷歌地图的问题

2 个答案: