小编And*_*ndy的帖子

我刚刚下载了Maven,并试图运行"Maven in Five Minutes"页面(http://maven.apache.org/guides/getting-started/maven-in-five-minutes.html)上发现的简单命令.这是命令:

mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-app -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false

当我运行它时,我收到SSL证书的错误,无法从https://repo.maven.apache.org/maven2的中央Maven存储库下载.错误是"SunCertPathBuilderException:无法找到请求目标的有效证书路径".

我坐在公司防火墙后面并正确配置了两者的代理设置http并https通过该settings.xml文件进行访问.我怀疑所有下载Maven并且第一次运行它的人都必须导入Maven存储库的SSL证书,所以问题必须在于代理.有人对这个有经验么？

这是完全调试模式(-X)中的堆栈跟踪:

 mvn archetype:generate -DgroupId=com.mycompany.app -DartifactId=my-app -DarchetypeArtifactId=maven-archetype-quickstart -DinteractiveMode=false

Apache Maven 3.2.3(33f8c3e1027c3ddde99d3cdebad2656a31e8fdf4; 2014-08-11T22:58:10 + 02:00)Maven home:C:\ Projects\maven\bin .. Java版本:1.7.0_45,供应商:Oracle Corporation Java home:C :\ Program Files\Java\jdk1.7.0_45\jre默认语言环境:it_IT,平台编码:Cp1252操作系统名称:"windows 7",版本:"6.1",arch:"amd64",系列:"windows"[DEBUG]使用连接器WagonRepositoryConnector优先级为0.0表示https://repo.maven.apache.org/maven2通过*****:8080表示用户名=*****,密码=***下载:https:// repo. maven.apache.org/maven2/org/apache/maven/plugins/maven-clean-plugin/2.5/maven-clean-plugin-2.5.pom [警告]无法检索org.apache.maven.plugins的插件描述符: maven-clean-plugin:2.5:插件org.apache.maven.plugins:maven-clean-plugin:2.5或其中一个依赖项无法解析:无法读取org.apache.maven.plugins的工件描述符:maven- clean-plugin:jar:2.5 org.apache.maven.plugin.PluginResolutionException:插件org.apache.maven.pl ugins:maven-clean-plugin:2.5或其中一个依赖项无法解析:无法读取org.apache.maven.plugins的工件描述符:maven-clean-plugin:jar:2.5 org.apache.maven.plugin .internal.DefaultPluginDependenciesResolver.resolve(DefaultPluginDependenciesResolver.java:122)在org.apache.maven.plugin.internal.DefaultMavenPluginManager.getPluginDescriptor(DefaultMavenPluginManager.java:148)在org.apache.maven.plugin.DefaultBuildPluginManager.loadPlugin(DefaultBuildPluginManager.java :81)在org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.resolveFromProject(DefaultPluginPrefixResolver.java:138)在org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.resolveFromProject(DefaultPluginPrefixResolver.java:121)在org.apache.maven.plugin.prefix.internal.DefaultPluginPrefixResolver.resolve(DefaultPluginPrefixResolver.java:85)在org.apache.maven.lifecycle.internal.MojoDescriptorCreator.findPluginForPrefix(MojoDescriptorCreator.java:260)在组织 位于org.apache.maven.lifecycle.internal的org.apache.maven.lifecycle.internal.DefaultLifecycleTaskSegmentCalculator.calculateTaskSegments(DefaultLifecycleTaskSegmentCalculator.java:103)中的.apache.maven.lifecycle.internal.MojoDescriptorCreator.getMojoDescriptor(MojoDescriptorCreator.java:220) .DefaultLifecycleTaskSegmentCalculator.calculateTaskSegments(DefaultLifecycleTaskSegmentCalculator.java:83)在org.apache.maven.lifecycle.internal.LifecycleStarter.execute(LifecycleStarter.java:85)在org.apache.maven.DefaultMaven.doExecute(DefaultMaven.java:347)在org.apache.maven.DefaultMaven.execute(DefaultMaven.java:154)org.apache.maven.cli.MavenCli.execute(MavenCli.java:582)org.apache.maven.cli.MavenCli.doMain(MavenCli.的java:214)在org.apache.maven.cli.MavenCli.main(MavenCli.java:158)在sun.reflect.NativeMethodAccessorImpl.invoke0(本机方法)在sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57) at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingM ethodAccessorImpl.java:43)在org.codehaus.plexus的org.codehaus.plexus.classworlds.launcher.Launcher.launchEnhanced(Launcher.java:289)的java.lang.reflect.Method.invoke(Method.java:606) .classworlds.launcher.Launcher.launch(Launcher.java:229)org.codehaus.plexus.classworlds.launcher.Launcher.mainWithExitCode(Launcher.java:415)at org.codehaus.plexus.classworlds.launcher.Launcher.main (Launcher.java:356)引起:org.eclipse.aether.resolution.ArtifactDescriptorException:无法读取org.apache.maven.plugins的工件描述符:maven-clean-plugin:jar:2.5 atg.apache.maven. repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:349)位于org.eclipse.aether.internal.impl.DefaultRepositorySystem.readArtifactDescriptor的org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.readArtifactDescriptor(DefaultArtifactDescriptorReader.java:231) DefaultRepositorySystem.java:288)org.apache.maven.plugin.internal.DefaultPluginDep endenciesResolver.resolve(DefaultPluginDependenciesResolver.java:108)... 23更多引起:org.eclipse.aether.resolution.ArtifactResolutionException:无法传输工件org.apache.maven.plugins:maven-clean-plugin:pom:2.5 from/to central(https://repo.maven.apache.org/maven2):sun.security.validator.ValidatorException:PKIX路径构建失败:sun.security.provider.certpath.SunCertPathBuilderException:无法找到要求的有效证书路径在org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolve(DefaultArtifactResolver.java:459)处org.eclipse.aether org.eclipse.aether.internal.impl.DefaultArtifactResolver.resolveArtifacts(DefaultArtifactResolver.java:262)靶. org.eclipse.aether.transfer:internal.impl.DefaultArtifactResolver.resolveArtifact(DefaultArtifactResolver.java:239)在org.apache.maven.repository.internal.DefaultArtifactDescriptorReader.loadPom(DefaultArtifactDescriptorReader.java:334)...... 26多所致.ArtifactTransferExceptio n:无法传输工件org.apache.maven.plugins:maven-clean-plugin:pom:2.5 …

我需要有一个Spark列表,根据用户的选择在VerticalLayout和TileLayout之间切换.最明显的方法是创建具有单独布局的两个列表,然后使用States和"includeIn"属性.但是,这不是一个非常好的解决方案,因为我想在切换时在视图中保留相同的项目(如果用户在VerticalLayout中滚动到项目100,然后切换到Tile,我希望项目100立即可见新布局,而不是从第一项开始).

所以我尝试在同一个列表上使用2个布局并使用"includeIn"解决方案.但是,我收到此错误:

"在'layout'的初始化程序中,目标类型为spark.layouts.supportClasses.LayoutBase的多个初始值设定值."

以下是生成此错误的源代码,有人可以建议更好的方法吗？

<?xml version="1.0" encoding="utf-8"?>
<s:View 
    xmlns:fx="http://ns.adobe.com/mxml/2009"
    xmlns:s="library://ns.adobe.com/flex/spark" 
    xmlns:mx="library://ns.adobe.com/flex/mx"
    >

    <fx:Script>
        <![CDATA[
            import mx.collections.ArrayCollection;

            [Bindable]
            public var myAC:ArrayCollection = new ArrayCollection([
                "01","02","03","04","05","06","07","08","09","10",
                "11","12","13","14","15","16","17","18","19","20",
                "21","22","23","24","25","26","27","28","29","30",
                "31","32","33","34","35","36","37","38","39","40",
                "41","42","43","44","45","46","47","48","49","50"
            ]);

            public function toggleListTileState():void
            {
                if(currentState=="ListState") currentState = "TileState"
                else currentState = "ListState";
            }
        ]]>    
    </fx:Script>

    <s:actionContent>
        <s:Button label="tile" label.TileState="list" click="toggleListTileState()"/>
    </s:actionContent>  

    <s:states> 
        <s:State name="ListState" /> 
        <s:State name="TileState" /> 
    </s:states>

    <s:List
        id="list"
        width="100%"
        height="100%"
        dataProvider="{myAC}"
        >
        <s:layout>
            <s:VerticalLayout
                includeIn="ListState"
                horizontalAlign="justify"
                useVirtualLayout="true"
                />

            <s:TileLayout
                includeIn="TileState"
                rowHeight="300"
                useVirtualLayout="true"
                />
        </s:layout>
    </s:List>

</s:View>

谢谢

我需要通过扩展spark列表在Flex 4.5中创建自定义组件.基本上,我想添加一个名为"title"的新变量,类型为UIComponent.设置此变量后,我需要将其呈现在列表的顶部.

这将给我一个列表,其中包含一个可配置的标题组件,该列表随列表一起滚动.应该很简单,但我无法弄清楚它是如何完成的.我看着一路上涨的层次spark.components.List和spark.skins.mobile.ListSkin和阅读有关设置,但所有的教程是极其简单的,不显示怎么做这样的事情的几篇文章.

有帮助吗？谢谢