使用VertX

时间:2016-10-22 21:46:51

标签: kotlin vert.x

我试图提供图标和一些字体。

object Lion : AbstractVerticle() {

    @JvmStatic
    @Throws(IOException::class)
    fun main(args: Array<String>) {

    val vertx = Vertx.vertx()
    val router = Router.router(vertx)

    router.route().handler(CorsHandler.create("*")
        .allowedMethod(HttpMethod.GET)
        .allowedMethod(HttpMethod.POST)
        .allowedMethod(HttpMethod.OPTIONS)
        .allowedHeader("X-PINGARUNER")
        .allowedHeader("Content-Type"))

    // some json GET / POST routes here

    router.route().handler(FaviconHandler.create());
    router.route().handler(StaticHandler.create())

    vertx.createHttpServer().requestHandler { router.accept(it) }.listen(9090)
}

FaviconHandler抛出异常导致&#34;内部服务器错误&#34;当我去http://localhost:9090/favicon.ico时 我的favicon位于src/main/resources/webroot/favicon.ico

Oct 22, 2016 11:16:42 PM io.vertx.ext.web.impl.RoutingContextImplBase
SEVERE: Unexpected exception in route
java.lang.RuntimeException: java.lang.NullPointerException
    at io.vertx.ext.web.handler.impl.FaviconHandlerImpl.init(FaviconHandlerImpl.java:148)
    at io.vertx.ext.web.handler.impl.FaviconHandlerImpl.handle(FaviconHandlerImpl.java:155)
    at io.vertx.ext.web.handler.impl.FaviconHandlerImpl.handle(FaviconHandlerImpl.java:33)
    at io.vertx.ext.web.impl.RouteImpl.handleContext(RouteImpl.java:215)
    at io.vertx.ext.web.impl.RoutingContextImplBase.iterateNext(RoutingContextImplBase.java:78)
    at io.vertx.ext.web.impl.RoutingContextImpl.next(RoutingContextImpl.java:94)
    at io.vertx.ext.web.handler.impl.CorsHandlerImpl.handle(CorsHandlerImpl.java:121)
    at io.vertx.ext.web.handler.impl.CorsHandlerImpl.handle(CorsHandlerImpl.java:38)
    at io.vertx.ext.web.impl.RouteImpl.handleContext(RouteImpl.java:215)
    at io.vertx.ext.web.impl.RoutingContextImplBase.iterateNext(RoutingContextImplBase.java:78)
    at io.vertx.ext.web.impl.RoutingContextImpl.next(RoutingContextImpl.java:94)
    at io.vertx.ext.web.impl.RouterImpl.accept(RouterImpl.java:79)
    at Lion$main$8.handle(Lion.kt:90)
    at Lion$main$8.handle(Lion.kt:43)
    at io.vertx.core.http.impl.ServerConnection.handleRequest(ServerConnection.java:286)
    at io.vertx.core.http.impl.ServerConnection.processMessage(ServerConnection.java:412)
    at io.vertx.core.http.impl.ServerConnection.handleMessage(ServerConnection.java:139)
    at io.vertx.core.http.impl.HttpServerImpl$ServerHandler.lambda$createConnAndHandle$1(HttpServerImpl.java:712)
    at io.vertx.core.impl.ContextImpl.lambda$wrapTask$2(ContextImpl.java:314)
    at io.vertx.core.impl.ContextImpl.executeFromIO(ContextImpl.java:190)
    at io.vertx.core.http.impl.HttpServerImpl$ServerHandler.createConnAndHandle(HttpServerImpl.java:706)
    at io.vertx.core.http.impl.HttpServerImpl$ServerHandler.doMessageReceived(HttpServerImpl.java:570)
    at io.vertx.core.http.impl.HttpServerImpl$ServerHandler.doMessageReceived(HttpServerImpl.java:522)
    at io.vertx.core.http.impl.VertxHttpHandler.channelRead(VertxHttpHandler.java:76)
    at io.vertx.core.net.impl.VertxHandler.channelRead(VertxHandler.java:122)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.handler.codec.ByteToMessageDecoder.fireChannelRead(ByteToMessageDecoder.java:293)
    at io.netty.handler.codec.ByteToMessageDecoder.channelRead(ByteToMessageDecoder.java:267)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.vertx.core.http.impl.HttpServerImpl$Http1xOrHttp2Handler.http1(HttpServerImpl.java:1019)
    at io.vertx.core.http.impl.HttpServerImpl$Http1xOrHttp2Handler.channelRead(HttpServerImpl.java:990)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.AbstractChannelHandlerContext.fireChannelRead(AbstractChannelHandlerContext.java:350)
    at io.netty.channel.DefaultChannelPipeline$HeadContext.channelRead(DefaultChannelPipeline.java:1334)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:372)
    at io.netty.channel.AbstractChannelHandlerContext.invokeChannelRead(AbstractChannelHandlerContext.java:358)
    at io.netty.channel.DefaultChannelPipeline.fireChannelRead(DefaultChannelPipeline.java:926)
    at io.netty.channel.nio.AbstractNioByteChannel$NioByteUnsafe.read(AbstractNioByteChannel.java:129)
    at io.netty.channel.nio.NioEventLoop.processSelectedKey(NioEventLoop.java:610)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeysOptimized(NioEventLoop.java:551)
    at io.netty.channel.nio.NioEventLoop.processSelectedKeys(NioEventLoop.java:465)
    at io.netty.channel.nio.NioEventLoop.run(NioEventLoop.java:437)
    at io.netty.util.concurrent.SingleThreadEventExecutor$5.run(SingleThreadEventExecutor.java:873)
    at java.lang.Thread.run(Thread.java:745)
Caused by: java.lang.NullPointerException
    at io.vertx.ext.web.handler.impl.FaviconHandlerImpl$Icon.<init>(FaviconHandlerImpl.java:61)
    at io.vertx.ext.web.handler.impl.FaviconHandlerImpl$Icon.<init>(FaviconHandlerImpl.java:40)
    at io.vertx.ext.web.handler.impl.FaviconHandlerImpl.init(FaviconHandlerImpl.java:143)
    ... 48 more

删除FaviconHandler和普通htmljscss文件服务正常,但字体无法投放。

Failed to decode downloaded font: http://localhost:9090/fonts/glyphicons-halflings-regular.woff
/#/tcr:1 OTS parsing error: incorrect file size in WOFF header

当我直接转到该font-url时,浏览器会尝试将该字体下载为常规文件。

这似乎是一个潜在的解决方案,但我看到的东西不是我的图标,只是一个16x16的正方形,其中包含扭曲的线条,字体仍在尝试下载并仍然在浏览器控制台中出错

    router.route("/favicon.ico").handler {
        it.response().putHeader("Content-Type", "image/x-icon").sendFile("webroot/favicon.ico")
    }

    router.route("/fonts/glyphicons-halflings-regular.woff").handler { 
         it.response().putHeader("Content-Type", "application/font-woff").sendFile("webroot/fonts/glyphicons-halflings-regular.woff")
    }

总而言之,如何使用正确的MimeTypes正确制作StaticHandler发送.woff.ico文件而不下载这些文件?

解决方案

我遇到的第一个问题是,由于某种原因,maven shade并没有将所有字体文件复制到jar中。

在构建时明确复制字体文件并禁用字体资源过滤似乎修复了字体问题。

<build>
    <sourceDirectory>${basedir}/src/main/java</sourceDirectory>
    <resources>
        <resource>
            <directory>${basedir}/src/main/resources</directory>
            <filtering>true</filtering>
        </resource>
        <resource>
            <directory>${basedir}/src/main/resources/fonts</directory>
            <filtering>false</filtering>
        </resource>
    </resources>

然后从资源目录而不是字体目录中提供字体来修复它(即使文件存在,VertX也不会出于某种原因从字体目录中提供服务)

enter image description here

   router.route("/fonts/glyphicons-halflings-regular.woff2").handler {
            it.response().sendFile("glyphicons-halflings-regular.woff2")
        }
        router.route("/fonts/glyphicons-halflings-regular.woff").handler {
            it.response().sendFile("glyphicons-halflings-regular.woff")
        }
        router.route("/fonts/glyphicons-halflings-regular.ttf").handler {
            it.response().sendFile("glyphicons-halflings-regular.ttf")
        }
        router.route().handler(StaticHandler.create().setCachingEnabled(true));

Favicon可能正在被缓存,仍在调查,此时,favicon并不是那么重要。

router.route("/favicon.ico").handler(FaviconHandler.create("favicon.ico"))

2 个答案:

答案 0 :(得分:3)

<强>的favicon.ico:

只需将favicon.ico文件直接上移到resources文件夹中即可:

/src/main/resources/favicon.ico

或者更改您的FaviconHandler以传递路径和文件名:

router.route().handler(FaviconHandler.create(FaviconHandler.create("webroot/favicon.ico")))

您的代码假定FaviconHandler也尊重webroot中设置的StaticHandler,但事实并非如此。这纯粹是StaticHandler的属性,因此FaviconHandler会在resources/中查找资源,除非您指定相对路径。找不到该资源后,it uses the result of getResourceAsStream("favicon.ico")null并崩溃。

如果您查看FaviconHandlerImpl的单元测试,您会看到they place the favicon.ico file in the root of resources而不是webroot

WOFF文件:

至于你的字体文件,你正在寻找问题的错误位置。它与MIME类型无关。

更有可能的是,您在事故中损坏了WOFF文件。这可能发生在你用GIT提交它们时它认为它们是文本文件并且它破坏了行结尾从而破坏了它们。或者您使用了Maven Filter插件,它也做了同样的事情,破坏了它们。或者您通过FTP上传/下载它们作为文本文件,同样的问题。

请参阅有关此内容的其他帖子:https://stackoverflow.com/a/33792610/3679676

答案 1 :(得分:1)

您没有指定您的favicon路径,因此Vertx会尝试找到默认路径:

 if (path == null) {
    icon = new Icon(Utils.readResourceToBuffer("favicon.ico"));
 }

您的favicon位于resources/webroot/favicon.ico,但Vertx在resources/favicon.ico

查找

因此,您可以指定FaviconHandler.create("webroot/favicon.ico")或将其移动一个目录。

关于WOFF文件,我无法重现问题,因为WOFF返回application/x-font-woff,这似乎是正确的。