grails helloworld应用程序给出了异常

Question

我正在尝试学习grails并遵循教程。

http://grails.org/doc/latest/guide/gettingStarted.html#creatingAnApplication

grails create-app helloworld命令工作正常并且正在创建项目。但是当我在helloworld目录中输入“grails”时，我发现错误。无法理解这个的根本原因：

| Loading Grails 2.4.4
| Error java.lang.reflect.InvocationTargetException
| Error         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| Error         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
| Error         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
| Error         at java.lang.reflect.Method.invoke(Method.java:606)
| Error         at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1270)
| Error         at org.codehaus.groovy.grails.cli.support.GrailsStarter.rootLoader(GrailsStarter.java:236)
| Error         at org.codehaus.groovy.grails.cli.support.GrailsStarter.main(GrailsStarter.java:264)
| Error         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| Error         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
| Error         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
| Error         at java.lang.reflect.Method.invoke(Method.java:606)
| Error         at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1270)
| Error         at org.codehaus.groovy.grails.cli.support.GrailsStarter.rootLoader(GrailsStarter.java:236)
| Error         at org.codehaus.groovy.grails.cli.support.GrailsStarter.main(GrailsStarter.java:264)
| Error Caused by: java.lang.NumberFormatException: For input string: "true"
| Error         at java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
| Error         at java.lang.Integer.parseInt(Integer.java:492)
| Error         at java.lang.Integer.valueOf(Integer.java:582)
| Error         at org.codehaus.groovy.runtime.StringGroovyMethods.toInteger(StringGroovyMethods.java:3503)
| Error         at org.codehaus.groovy.grails.resolve.maven.aether.config.RepositoriesConfiguration.configureRepository(RepositoriesConfiguration.groo
vy:131)
| Error         at org.codehaus.groovy.grails.resolve.maven.aether.config.RepositoriesConfiguration.grailsCentral(RepositoriesConfiguration.groovy:154
)
| Error         at org.codehaus.groovy.grails.resolve.maven.aether.config.RepositoriesConfiguration.grailsCentral(RepositoriesConfiguration.groovy)
| Error         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| Error         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
| Error         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
| Error         at java.lang.reflect.Method.invoke(Method.java:606)
| Error         at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1270)
| Error         at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
| Error         at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:324)
| Error         at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1207)
| Error         at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:1110)
| Error         at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1016)
| Error         at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1158)
| Error         at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:1110)
| Error         at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1016)
| Error         at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:66)
| Error         at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:49)
| Error         at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:133)
| Error         at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:137)
| Error         at BuildConfig$_run_closure1_closure3.doCall(BuildConfig.groovy:41)
| Error         at BuildConfig$_run_closure1_closure3.doCall(BuildConfig.groovy)
| Error         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| Error         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
| Error         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
| Error         at java.lang.reflect.Method.invoke(Method.java:606)
| Error         at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1270)
| Error         at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
| Error         at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:324)
| Error         at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1207)
| Error         at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:1110)
| Error         at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1016)
| Error         at groovy.lang.Closure.call(Closure.java:423)
| Error         at groovy.lang.Closure.call(Closure.java:417)
| Error         at org.codehaus.groovy.grails.resolve.maven.aether.config.AetherDsl.repositories(AetherDsl.groovy:196)
| Error         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| Error         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
| Error         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
| Error         at java.lang.reflect.Method.invoke(Method.java:606)
| Error         at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1270)
| Error         at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
| Error         at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:324)
| Error         at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1207)
| Error         at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:1110)
| Error         at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1016)
| Error         at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1158)
| Error         at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:1110)
| Error         at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1016)
| Error         at org.codehaus.groovy.runtime.callsite.PogoMetaClassSite.callCurrent(PogoMetaClassSite.java:66)
| Error         at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:49)
| Error         at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:133)
| Error         at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:141)
| Error         at BuildConfig$_run_closure1.doCall(BuildConfig.groovy:35)
| Error         at BuildConfig$_run_closure1.doCall(BuildConfig.groovy)
| Error         at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
| Error         at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
| Error         at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
| Error         at java.lang.reflect.Method.invoke(Method.java:606)
| Error         at org.springsource.loaded.ri.ReflectiveInterceptor.jlrMethodInvoke(ReflectiveInterceptor.java:1270)
| Error         at org.codehaus.groovy.reflection.CachedMethod.invoke(CachedMethod.java:90)
| Error         at groovy.lang.MetaMethod.doMethodInvoke(MetaMethod.java:324)
| Error         at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1207)
| Error         at groovy.lang.ExpandoMetaClass.invokeMethod(ExpandoMetaClass.java:1110)
| Error         at groovy.lang.MetaClassImpl.invokeMethod(MetaClassImpl.java:1016)
| Error         at groovy.lang.Closure.call(Closure.java:423)
| Error         at groovy.lang.Closure.call(Closure.java:417)
| Error         at org.codehaus.groovy.grails.resolve.maven.aether.AetherDependencyManager.parseDependencies(AetherDependencyManager.groovy:317)
| Error         at org.codehaus.groovy.grails.resolve.DependencyManager$parseDependencies.call(Unknown Source)
| Error         at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCall(CallSiteArray.java:45)
| Error         at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:108)
| Error         at org.codehaus.groovy.runtime.callsite.AbstractCallSite.call(AbstractCallSite.java:116)
| Error         at org.codehaus.groovy.grails.resolve.DependencyManagerConfigurer.prepareAetherDependencies(DependencyManagerConfigurer.groovy:116)
| Error         at org.codehaus.groovy.grails.resolve.DependencyManagerConfigurer.configureAether(DependencyManagerConfigurer.groovy:59)
| Error         at grails.util.BuildSettings.configureDependencyManager(BuildSettings.groovy:1280)
| Error         at grails.util.BuildSettings.postLoadConfig(BuildSettings.groovy:1220)
| Error         at grails.util.BuildSettings.loadConfig(BuildSettings.groovy:1116)
| Error         at grails.util.BuildSettings.loadConfig(BuildSettings.groovy:1088)
| Error         at grails.util.BuildSettings.loadConfig(BuildSettings.groovy)
| Error         at grails.util.BuildSettings.loadConfig(BuildSettings.groovy:1074)
| Error         at grails.util.BuildSettings.loadConfig(BuildSettings.groovy)
| Error         at grails.util.BuildSettings$loadConfig$0.callCurrent(Unknown Source)
| Error         at org.codehaus.groovy.runtime.callsite.CallSiteArray.defaultCallCurrent(CallSiteArray.java:49)
| Error         at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:133)
| Error         at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callCurrent(AbstractCallSite.java:141)
| Error         at grails.util.BuildSettings.loadConfig(BuildSettings.groovy:1054)
| Error         at org.codehaus.groovy.grails.cli.GrailsScriptRunner.loadConfigEnvironment(GrailsScriptRunner.java:250)
| Error         at org.codehaus.groovy.grails.cli.GrailsScriptRunner.main(GrailsScriptRunner.java:210)
| Error         ... 14 more

尝试此处找到的与grails相关的所有链接。看起来没有人遇到我面临的问题。也许是我缺少的一些环境或配置问题。

以下是有关我的环境的详细信息：

JAVA_HOME=C:\Program Files\Java\jdk1.7.0_55
GRAILS_HOME=D:\Softwares\grails-2.4.4
GROOVY_HOME=D:\Softwares\groovy-2.3.7

我落后于公司代理，我按照以下教程设置：

http://grails.org/doc/latest/ref/Command%20Line/set-proxy.html

令人惊讶的是，如果我输入相同的命令，grails，除了grails创建app目录之外的任何目录，其工作正常并进入grails控制台。

任何成功创建应用的人都可以帮帮我。

BuildConfig.groovy（默认生成文件）

grails.servlet.version = "3.0" // Change depending on target container compliance (2.5 or 3.0)
grails.project.class.dir = "target/classes"
grails.project.test.class.dir = "target/test-classes"
grails.project.test.reports.dir = "target/test-reports"
grails.project.work.dir = "target/work"
grails.project.target.level = 1.6
grails.project.source.level = 1.6
//grails.project.war.file = "target/${appName}-${appVersion}.war"

grails.project.fork = [
    // configure settings for compilation JVM, note that if you alter the Groovy version forked compilation is required
    //  compile: [maxMemory: 256, minMemory: 64, debug: false, maxPerm: 256, daemon:true],

    // configure settings for the test-app JVM, uses the daemon by default
    test: [maxMemory: 768, minMemory: 64, debug: false, maxPerm: 256, daemon:true],
    // configure settings for the run-app JVM
    run: [maxMemory: 768, minMemory: 64, debug: false, maxPerm: 256, forkReserve:false],
    // configure settings for the run-war JVM
    war: [maxMemory: 768, minMemory: 64, debug: false, maxPerm: 256, forkReserve:false],
    // configure settings for the Console UI JVM
    console: [maxMemory: 768, minMemory: 64, debug: false, maxPerm: 256]
]

grails.project.dependency.resolver = "maven" // or ivy
grails.project.dependency.resolution = {
    // inherit Grails' default dependencies
    inherits("global") {
        // specify dependency exclusions here; for example, uncomment this to disable ehcache:
        // excludes 'ehcache'
    }
    log "error" // log level of Ivy resolver, either 'error', 'warn', 'info', 'debug' or 'verbose'
    checksums true // Whether to verify checksums on resolve
    legacyResolve false // whether to do a secondary resolve on plugin installation, not advised and here for backwards compatibility

    repositories {
        inherits true // Whether to inherit repository definitions from plugins

        grailsPlugins()
        grailsHome()
        mavenLocal()
        grailsCentral()
        mavenCentral()
        // uncomment these (or add new ones) to enable remote dependency resolution from public Maven repositories
        //mavenRepo "http://repository.codehaus.org"
        //mavenRepo "http://download.java.net/maven/2/"
        //mavenRepo "http://repository.jboss.com/maven2/"
    }

    dependencies {
        // specify dependencies here under either 'build', 'compile', 'runtime', 'test' or 'provided' scopes e.g.
        // runtime 'mysql:mysql-connector-java:5.1.29'
        // runtime 'org.postgresql:postgresql:9.3-1101-jdbc41'
        test "org.grails:grails-datastore-test-support:1.0.2-grails-2.4"
    }

    plugins {
        // plugins for the build system only
        build ":tomcat:7.0.55"

        // plugins for the compile step
        compile ":scaffolding:2.1.2"
        compile ':cache:1.1.8'
        compile ":asset-pipeline:1.9.9"

        // plugins needed at runtime but not for compilation
        runtime ":hibernate4:4.3.6.1" // or ":hibernate:3.6.10.18"
        runtime ":database-migration:1.4.0"
        runtime ":jquery:1.11.1"

        // Uncomment these to enable additional asset-pipeline capabilities
        //compile ":sass-asset-pipeline:1.9.0"
        //compile ":less-asset-pipeline:1.10.0"
        //compile ":coffee-asset-pipeline:1.8.0"
        //compile ":handlebars-asset-pipeline:1.3.0.3"
    }
}

Answer 1

终于得到了这个问题。看起来下面的代理设置命令有问题： http://grails.org/doc/latest/ref/Command%20Line/set-proxy.html

grails add-proxy client --host=my_proxy_server --port=my_proxy_port --username=my_uname --password=my_pwd
grails set-proxy client

虽然我使用了正确的代理详细信息，但它在＆C; \ Users \ .grails \ ProxySettings.groovy＆＃39;中插入了条目。文件如下所示。

client=['http.proxyHost':true, 'http.proxyPort':true, 'http.proxyUser':true, 'http.proxyPassword':true, 'http.nonProxyHosts':'']
currentProxy='client'

当我改变＆＃34; true＆＃34;在这个文件中正确的值，它的工作正常。希望如果他们遇到同样的问题，这会有所帮助。

如果要使用Windows命令正确更新代理设置，请使用以下命令：

grails add-proxy myproxy "--host=my_host" "--port=my_port"
grails set-proxy myproxy

您需要用双引号括起参数。然后它正在更新proxySettings.groovy文件。 来源：

http://lalitagarw.blogspot.in/2011/06/grails-configuration-proxy-settings.html