使用Apache Camel插件安装Grails

问题描述：

我无法使Apache Camel插件在grails-1.1.1中运行。下面是我所采取的步骤：使用Apache Camel插件安装Grails

$ grails create-app camelapp 
Welcome to Grails 1.1.1 - http://grails.org/ 
... 

$ cd camelapp 

$ grails run-app 
... 
Running Grails application.. 
Server running. Browse to http://localhost:8080/camelapp 

$ grails install-plugin camel 
... 
Camel Route directory was created. 
Plugin camel-0.2 installed 
Plug-in provides the following new scripts: 
------------------------------------------ 
grails create-route 

$ grails run-app 
... 
[groovyc] org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed, Compile error during compilation with javac. 
    [groovyc] /Users/abdullah/.grails/1.1.1/projects/camelapp/plugins/camel-0.2/src/java/org/ix/grails/plugins/camel/ClosureProcessor.java:22: method does not override a method from its superclass 
    [groovyc]  @Override 
    [groovyc]  ^
... 
: Compilation Failed 
    at org.codehaus.groovy.ant.Groovyc.compile(Groovyc.java:807) 
    at org.codehaus.groovy.ant.Groovyc.execute(Groovyc.java:540) 
    at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:105) 
    at org.apache.tools.ant.Task.perform(Task.java:348) 
    at _GrailsCompile_groovy$_run_closure3_closure7.doCall(_GrailsCompile_groovy:102) 
    at _GrailsCompile_groovy$_run_closure3_closure7.doCall(_GrailsCompile_groovy) 
    at _GrailsSettings_groovy$_run_closure10.doCall(_GrailsSettings_groovy:274) 
    at _GrailsSettings_groovy$_run_closure10.call(_GrailsSettings_groovy) 
    at _GrailsCompile_groovy$_run_closure3.doCall(_GrailsCompile_groovy:89) 
    at _GrailsCompile_groovy$_run_closure2.doCall(_GrailsCompile_groovy:55) 
    at _GrailsPackage_groovy$_run_closure2_closure9.doCall(_GrailsPackage_groovy:79) 
    at _GrailsPackage_groovy$_run_closure2_closure9.doCall(_GrailsPackage_groovy) 
    at _GrailsSettings_groovy$_run_closure10.doCall(_GrailsSettings_groovy:274) 
    at _GrailsSettings_groovy$_run_closure10.call(_GrailsSettings_groovy) 
    at _GrailsPackage_groovy$_run_closure2.doCall(_GrailsPackage_groovy:78) 
    at RunApp$_run_closure1.doCall(RunApp.groovy:28) 
    at gant.Gant$_dispatch_closure4.doCall(Gant.groovy:324) 
    at gant.Gant$_dispatch_closure6.doCall(Gant.groovy:334) 
    at gant.Gant$_dispatch_closure6.doCall(Gant.groovy) 
    at gant.Gant.withBuildListeners(Gant.groovy:344) 
    at gant.Gant.this$2$withBuildListeners(Gant.groovy) 
    at gant.Gant$this$2$withBuildListeners.callCurrent(Unknown Source) 
    at gant.Gant.dispatch(Gant.groovy:334) 
    at gant.Gant.this$2$dispatch(Gant.groovy) 
    at gant.Gant.invokeMethod(Gant.groovy) 
    at gant.Gant.processTargets(Gant.groovy:495) 
    at gant.Gant.processTargets(Gant.groovy:480) 
Caused by: org.codehaus.groovy.control.MultipleCompilationErrorsException: startup failed, Compile error during compilation with javac. 
/Users/abdullah/.grails/1.1.1/projects/camelapp/plugins/camel-0.2/src/java/org/ix/grails/plugins/camel/ClosureProcessor.java:22: method does not override a method from its superclass 
    @Override 
     ^
... 
Compilation error: Compilation Failed 

$ java -version 
java version "1.6.0_07" 
Java(TM) SE Runtime Environment (build 1.6.0_07-b06-153) 
Java HotSpot(TM) 64-Bit Server VM (build 1.6.0_07-b06-57, mixed mode)

答

在这个问题上有JIRA。尝试删除ClosureProcessor.java文件上的@Override。

答

看来你正在使用JDK5，不容许@Override的接口实现。您需要将JDK6设置为默认JVM，JDK6允许@Override用于接口实现。

您也可以为apache camel插件所有者打开一个jira以删除注释，尽管JDK5不会持续太久。

其实我正在使用JDK6，如我的帖子底部所示。 – 2009-06-05 20:36:51

对不起，我错过了。也许grails正在为jdk5编译 – 2009-06-07 12:52:55

答

似乎骆驼插件grails发展被冻结。除此之外，它使用的骆驼1.6.0已经过时了。如果你打算有一天搬到camel2，那么使用骆驼插件显然会遇到问题。

我不会建议你在你的项目中使用它，更好地手动添加骆驼支持，以及你需要的引导函数（例如sendMessage）。我已经做到了。如果您需要更多提示，请与我联系。

使用Apache Camel插件安装Grails

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