xsbt-web-plugin 中 jetty:start 和 jetty:quickstart 有什么区别

Question

我是运行一个使用 sbt 1.3.8 构建的 lift 3.3.0 上的 scala 2.11.12 应用程序。我试过 xsbt-web-plugin 的 4.0.3 和 4.2.0。当我使用 jetty:start 时，我的应用程序启动正常，但当我使用 jetty:quickstart 时，它无法启动 - 我在浏览器中收到 500 错误，当我在控制台中检查应用程序日志时，我看到 java.lang.NoSuchMethodError：'int javax.servlet.http.HttpServletResponse.getStatus()' 导致码头实例返回 500。

** 编辑我在我的日志中更进一步

quickstart 的运行方式和 start 的运行方式有什么区别？我想不出问题。

下面是我的 build.sbt 以防有帮助。在其下方，我在 jetty:quickstart 中包含请求的控制台日志，显示我收到的错误。我没有收到 jetty:start.

的错误

** 编辑 2 Ive jun jetty:start 然后显示更新，jetty:quickstart 然后显示更新。他们都有 javax.servlet:servlet-api:2.5:default 作为依赖。但是 jetty:start 工作正常并启动容器，而 jetty:quickstart 无法初始化容器。我无法理解为什么一个有效而一个失败 - 在我看来两者都应该失败。

** edit 3 我弄清楚了为什么 servlet-api 2.5 会出现，并更新了 paypal 依赖项来解决这个问题。我仍然很想知道为什么 jetty:start 有效但 jetty:quickstart 没有 - 他们似乎都应该失败。

build.sbt

name := "knot-core"

organization := "com.postrope"

version := "0.0.1"

scalaVersion := "2.11.12"

excludeFilter := HiddenFileFilter -- ".ebextensions"

resolvers ++= Seq(
  "Sonatype scala-tools releases"  at "https://oss.sonatype.org/content/repositories/releases",
  "Sonatype scala-tools snapshots" at "https://oss.sonatype.org/content/repositories/snapshots"
)

scalacOptions ++= Seq("-unchecked", "-deprecation", "-feature")

libraryDependencies ++= {
  val liftVersion = "3.3.0"
  Seq(
    "net.liftweb" %% "lift-webkit" % liftVersion % "compile",
    "net.liftweb" %% "lift-mapper" % liftVersion % "compile",
    "junit" % "junit" % "4.7" % "test",
    "ch.qos.logback" % "logback-core" % "1.0.0",
    "ch.qos.logback" % "logback-classic" % "1.0.0",
    "mysql" % "mysql-connector-java" % "8.0.19",
    "org.ccil.cowan.tagsoup" % "tagsoup" % "1.2",
    "net.liftmodules" %% "paypal_3.0" % "1.3.0",
    "com.paypal.sdk" % "adaptivepaymentssdk" % "2.6.110",
    "com.paypal.sdk" % "adaptiveaccountssdk" % "2.4.106",
    "org.apache.solr" % "solr-solrj" % "4.4.0",
    "org.imgscalr" % "imgscalr-lib" % "4.2",
    "org.jsoup" % "jsoup" % "1.7.3",
    "com.amazonaws" % "aws-java-sdk" % "1.7.3",
    "org.seleniumhq.selenium" % "selenium-java" % "3.9.1",
    "org.seleniumhq.selenium" % "selenium-chrome-driver" % "3.9.1",
    "org.scalatest" %% "scalatest" % "3.1.1" % "test",
    "net.databinder.dispatch" %% "dispatch-core" % "0.11.2",
    "net.databinder" %% "dispatch-core" % "0.8.10",
    "net.databinder" %% "dispatch-http" % "0.8.10",
    "net.databinder" %% "dispatch-oauth" % "0.8.10",
    "net.databinder" %% "dispatch-http-json" % "0.8.10"
  )
}

enablePlugins(JettyPlugin)
javaOptions in Jetty ++= Seq(
  "-Xdebug",
  "-Xrunjdwp:transport=dt_socket,server=y,suspend=n,address=8000"
)

//jRebel class reload support

Seq(JRebelPlugin.jrebelSettings: _*)

jrebelWebLinks += (sourceDirectory in Compile).value / "webapp"

jrebelEnabled := true

javaOptions in Jetty ++= Seq(
  "-agentpath:C:\Users\drewb\tools\jrebel-2020.2.0\lib\jrebel64.dll",
)

错误 jetty:quickstart

02:03:55.221 [qtp101874302-67] DEBUG org.eclipse.jetty.server.HttpChannel - REQUEST for //localhost:8080/ on HttpChannelOverHttp@c1f8711{r=1,c=false,c=false/false,a=IDLE,uri=//localhost:8080/,age=1}
GET //localhost:8080/ HTTP/1.1
Host: localhost:8080
Connection: keep-alive
Upgrade-Insecure-Requests: 1
User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/81.0.4044.122 Safari/537.36
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,image/webp,image/apng,*/*;q=0.8,application/signed-exchange;v=b3;q=0.9
Sec-Fetch-Site: same-origin
Sec-Fetch-Mode: navigate
Sec-Fetch-User: ?1
Sec-Fetch-Dest: document
Referer: http://localhost:8080/
Accept-Encoding: gzip, deflate, br
Accept-Language: en-US,en;q=0.9
Cookie: _ga=GA1.1.498072716.1587178043; _gid=GA1.1.223715266.1587738288; JSESSIONID=node01b1y37p1yogb5tgcxs7c0pofr0.node0; _gat=1


02:03:55.221 [qtp101874302-67] DEBUG org.eclipse.jetty.server.HttpChannel - HttpChannelOverHttp@c1f8711{r=1,c=false,c=false/false,a=IDLE,uri=//localhost:8080/,age=2} onContentComplete
02:03:55.222 [qtp101874302-67] DEBUG org.eclipse.jetty.server.HttpChannel - HttpChannelOverHttp@c1f8711{r=1,c=false,c=false/false,a=IDLE,uri=//localhost:8080/,age=3} onRequestComplete
02:03:55.222 [qtp101874302-67] DEBUG org.eclipse.jetty.server.HttpInput - HttpInputOverHTTP@243824e[c=0,q=0,[0]=null,s=STREAM] addContent EOF
02:03:55.222 [qtp101874302-67] DEBUG o.e.jetty.server.HttpConnection - HttpConnection@70d9094a::SocketChannelEndPoint@7785c24d{/0:0:0:0:0:0:0:1:55305<->/0:0:0:0:0:0:0:1:8080,OPEN,fill=-,flush=-,to=19/30000}{io=0/0,kio=0,kro=1}->HttpConnection@70d9094a[p=HttpParser{s=END,0 of -1},g=HttpGenerator@43f6ae01{s=START}]=>HttpChannelOverHttp@c1f8711{r=1,c=false,c=false/false,a=IDLE,uri=//localhost:8080/,age=3} parsed true HttpParser{s=END,0 of -1}
02:03:55.223 [qtp101874302-67] DEBUG o.e.jetty.server.HttpConnection - releaseRequestBuffer HttpConnection@70d9094a::SocketChannelEndPoint@7785c24d{/0:0:0:0:0:0:0:1:55305<->/0:0:0:0:0:0:0:1:8080,OPEN,fill=-,flush=-,to=19/30000}{io=0/0,kio=0,kro=1}->HttpConnection@70d9094a[p=HttpParser{s=END,0 of -1},g=HttpGenerator@43f6ae01{s=START}]=>HttpChannelOverHttp@c1f8711{r=1,c=false,c=false/false,a=IDLE,uri=//localhost:8080/,age=4}
02:03:55.224 [qtp101874302-67] DEBUG org.eclipse.jetty.server.HttpChannel - HttpChannelOverHttp@c1f8711{r=1,c=false,c=false/false,a=IDLE,uri=//localhost:8080/,age=5} handle //localhost:8080/
02:03:55.224 [qtp101874302-67] DEBUG o.e.jetty.server.HttpChannelState - handling HttpChannelState@69b6a9e2{s=IDLE a=NOT_ASYNC i=true r=IDLE w=false}
02:03:55.227 [qtp101874302-67] DEBUG org.eclipse.jetty.server.HttpChannel - HttpChannelOverHttp@c1f8711{r=1,c=false,c=false/false,a=DISPATCHED,uri=//localhost:8080/,age=8} action DISPATCH
02:03:55.229 [qtp101874302-67] DEBUG org.eclipse.jetty.server.Server - REQUEST GET / on HttpChannelOverHttp@c1f8711{r=1,c=false,c=false/false,a=DISPATCHED,uri=//localhost:8080/,age=10}
02:03:55.229 [qtp101874302-67] DEBUG o.e.j.server.handler.ContextHandler - scope null||/ @ o.e.j.w.WebAppContext@1a45193b{/,file:///C:/Users/drewb/IdeaProjects/knot-alpha/src/main/webapp/,UNAVAILABLE}{file:///C:/Users/drewb/IdeaProjects/knot-alpha/src/main/webapp/}
02:03:55.232 [qtp101874302-67] WARN  org.eclipse.jetty.server.HttpChannel - /
java.lang.NoSuchMethodError: 'int javax.servlet.http.HttpServletResponse.getStatus()'
        at org.eclipse.jetty.server.handler.ErrorHandler.doError(ErrorHandler.java:138) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.ErrorHandler.handle(ErrorHandler.java:74) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.Response.sendError(Response.java:454) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.Response.sendError(Response.java:391) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.ContextHandler.checkContext(ContextHandler.java:1108) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1149) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:221) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.Server.handle(Server.java:494) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:374) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:268) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.io.ChannelEndPoint.run(ChannelEndPoint.java:117) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:782) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:918) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na]
02:03:55.232 [qtp101874302-67] DEBUG o.e.jetty.server.HttpChannelState - onError HttpChannelState@69b6a9e2{s=DISPATCHED a=NOT_ASYNC i=true r=IDLE w=false} {}
02:03:55.232 [qtp101874302-67] DEBUG o.e.jetty.server.HttpChannelState - unhandle HttpChannelState@69b6a9e2{s=THROWN a=NOT_ASYNC i=true r=IDLE w=false}
02:03:55.232 [qtp101874302-67] DEBUG org.eclipse.jetty.server.HttpChannel - HttpChannelOverHttp@c1f8711{r=1,c=false,c=false/false,a=DISPATCHED,uri=//localhost:8080/,age=13} action ERROR_DISPATCH
02:03:55.234 [qtp101874302-67] DEBUG org.eclipse.jetty.server.Server - ERROR GET / on HttpChannelOverHttp@c1f8711{r=1,c=false,c=false/false,a=DISPATCHED,uri=//localhost:8080/,age=15}
02:03:55.234 [qtp101874302-67] DEBUG o.e.j.server.handler.ContextHandler - scope null||/ @ o.e.j.w.WebAppContext@1a45193b{/,file:///C:/Users/drewb/IdeaProjects/knot-alpha/src/main/webapp/,UNAVAILABLE}{file:///C:/Users/drewb/IdeaProjects/knot-alpha/src/main/webapp/}
02:03:55.234 [qtp101874302-67] DEBUG o.e.j.server.handler.ContextHandler - context=||/ @ o.e.j.w.WebAppContext@1a45193b{/,file:///C:/Users/drewb/IdeaProjects/knot-alpha/src/main/webapp/,UNAVAILABLE}{file:///C:/Users/drewb/IdeaProjects/knot-alpha/src/main/webapp/}
02:03:55.236 [qtp101874302-67] DEBUG o.e.j.servlet.ErrorPageErrorHandler - getErrorPage(GET /) => error_page=null (from global default)
02:03:55.236 [qtp101874302-67] DEBUG o.e.j.server.handler.ErrorHandler - No Error Page mapping for request(GET /) (using default)
02:03:55.237 [qtp101874302-67] DEBUG org.eclipse.jetty.server.HttpChannel - Could not perform ERROR dispatch, aborting
java.lang.NoSuchMethodError: 'int javax.servlet.http.HttpServletResponse.getStatus()'
        at org.eclipse.jetty.server.handler.ErrorHandler.doError(ErrorHandler.java:138) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.ErrorHandler.handle(ErrorHandler.java:74) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.Response.sendError(Response.java:454) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.AbstractHandler.doError(AbstractHandler.java:93) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.ContextHandler.__doHandle(ContextHandler.java:1301) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.ContextHandler.doHandle(ContextHandler.java:42003) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.ScopedHandler.nextScope(ScopedHandler.java:190) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.ContextHandler.doScope(ContextHandler.java:1204) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.ScopedHandler.handle(ScopedHandler.java:141) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.ContextHandlerCollection.handle(ContextHandlerCollection.java:221) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.HandlerCollection.handle(HandlerCollection.java:146) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.HandlerWrapper.handle(HandlerWrapper.java:127) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.Server.handle(Server.java:494) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.HttpChannel.handle(HttpChannel.java:429) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.HttpConnection.onFillable(HttpConnection.java:268) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.io.AbstractConnection$ReadCallback.succeeded(AbstractConnection.java:311) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.io.FillInterest.fillable(FillInterest.java:103) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.io.ChannelEndPoint.run(ChannelEndPoint.java:117) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.util.thread.QueuedThreadPool.runJob(QueuedThreadPool.java:782) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.util.thread.QueuedThreadPool$Runner.run(QueuedThreadPool.java:918) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at java.base/java.lang.Thread.run(Thread.java:834) ~[na:na]
02:03:55.238 [qtp101874302-67] DEBUG org.eclipse.jetty.server.HttpChannel - sendResponse info=null content=HeapByteBuffer@47b52cca[p=0,l=0,c=0,r=0]={<<<>>>} complete=false committing=true callback=Blocker@4483efeb{null}
02:03:55.238 [qtp101874302-67] DEBUG org.eclipse.jetty.server.HttpChannel - COMMIT for / on HttpChannelOverHttp@c1f8711{r=1,c=true,c=false/false,a=DISPATCHED,uri=//localhost:8080/,age=19}
500 null HTTP/1.1

容器初始化错误

11:21:49.793 [main] DEBUG o.eclipse.jetty.webapp.WebAppContext - isServerClass==true class org.eclipse.jetty.annotations.ServletContainerInitializersStarter
11:21:49.793 [main] WARN  o.e.j.u.component.AbstractLifeCycle - FAILED ServletContainerInitializersStarter@285f09de{FAILED}: java.lang.NoSuchMethodError: 'javax.servlet.descriptor.JspConfigDescriptor javax.servlet.ServletContext.getJspConfigDescriptor()'
java.lang.NoSuchMethodError: 'javax.servlet.descriptor.JspConfigDescriptor javax.servlet.ServletContext.getJspConfigDescriptor()'
        at org.apache.jasper.servlet.TldScanner.scanJspConfig(TldScanner.java:158) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.apache.jasper.servlet.TldScanner.scan(TldScanner.java:102) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.apache.jasper.servlet.JasperInitializer.onStartup(JasperInitializer.java:101) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.plus.annotation.ContainerInitializer.callStartup(ContainerInitializer.java:141) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.annotations.ServletContainerInitializersStarter.doStart(ServletContainerInitializersStarter.java:64) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:72) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.servlet.ServletContextHandler.startContext(ServletContextHandler.java:342) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.webapp.WebAppContext.startWebapp(WebAppContext.java:1443) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.webapp.WebAppContext.startContext(WebAppContext.java:1407) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.ContextHandler.doStart(ContextHandler.java:821) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.servlet.ServletContextHandler.doStart(ServletContextHandler.java:276) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.webapp.WebAppContext.doStart(WebAppContext.java:524) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:72) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:169) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:117) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:106) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:72) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:169) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:117) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:106) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:72) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.util.component.ContainerLifeCycle.start(ContainerLifeCycle.java:169) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.Server.start(Server.java:407) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.util.component.ContainerLifeCycle.doStart(ContainerLifeCycle.java:110) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.handler.AbstractHandler.doStart(AbstractHandler.java:106) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.server.Server.doStart(Server.java:371) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.util.component.AbstractLifeCycle.start(AbstractLifeCycle.java:72) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.runner.Runner.run(Runner.java:520) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
        at org.eclipse.jetty.runner.Runner.main(Runner.java:565) ~[jetty-runner-9.4.20.v20190813.jar:9.4.20.v20190813]
11:21:49.794 [main] WARN  o.eclipse.jetty.webapp.WebAppContext - Failed startup of context o.e.j.w.WebAppContext@4bd1f8dd{/,file:///C:/Users/drewb/IdeaProjects/knot-alpha/src/main/webapp/,UNAVAILABLE}{file:///C:/Users/drewb/IdeaProjects/knot-alpha/src/main/webapp/

Answer 1

jetty:start 和 jetty:quickstart 命令均来自 Jetty 的 xsbt-web-plugin. Note that jetty:quickstart is unrelated to the Quickstart Webapps 功能。

两者之间的主要区别在于 start 构建项目的完整包而 quickstart 不构建。使用 quickstart，不会创建 .war 文件，您的类不会打包在 .jar 文件等

使用 quickstart，Jetty 运行使用由 sbt 管理的项目的运行time 类路径。使用 start，Jetty 是运行只有你的项目的包，它包含的依赖项作为 .jar 文件。这些可能不同，因为 sbt 的运行time 类路径将包含 provided 范围内的依赖项，而你的包不会。这就是为什么一个为您工作而另一个不为您工作的原因。

你的错误：

java.lang.NoSuchMethodError: 'int javax.servlet.http.HttpServletResponse.getStatus()'

表示您的类路径上的 servlet-api .jar 与 Jetty 期望的之间有一个 version conflict。您项目的一个或多个依赖项必须对旧版本 servlet-api.

具有传递依赖性

inspect the dependency tree有多种方法。使用 Coursier，我看到您的两个 Paypal 库都依赖于 servlet-api 2.5:

├─ com.paypal.sdk:adaptiveaccountssdk:2.4.106
│  └─ com.paypal.sdk:paypal-core:1.4.4
│     ├─ com.google.code.gson:gson:2.2.2 -> 2.8.2 (possible incompatibility)
│     ├─ commons-codec:commons-codec:1.6 -> 1.11 (possible incompatibility)
│     └─ javax.servlet:servlet-api:2.5
├─ com.paypal.sdk:adaptivepaymentssdk:2.6.110
│  └─ com.paypal.sdk:paypal-core:1.4.4
│     ├─ com.google.code.gson:gson:2.2.2 -> 2.8.2 (possible incompatibility)
│     ├─ commons-codec:commons-codec:1.6 -> 1.11 (possible incompatibility)
│     └─ javax.servlet:servlet-api:2.5

这需要排除，因为它对于您正在使用的 Jetty 版本来说太旧了。

在 sbt 中有多种方法可以 exclude transitive dependencies。通过将 exclude("javax.servlet", "servlet-api") 添加到您的两个 Paypal 依赖项，我们可以阻止 servlet-api:

的冲突版本

"com.paypal.sdk" % "adaptivepaymentssdk" % "2.6.110" exclude("javax.servlet", "servlet-api"),
"com.paypal.sdk" % "adaptiveaccountssdk" % "2.4.106" exclude("javax.servlet", "servlet-api"),

您还需要将最近的一个添加到 provided 范围以便您的代码可以编译：

libraryDependencies += "javax.servlet" % "javax.servlet-api" % "3.0.1" % "provided"

xsbt-web-plugin 中 jetty:start 和 jetty:quickstart 有什么区别

What is the difference between jetty:start and jetty:quickstart in xsbt-web-plugin

scala

jetty

sbt

xsbt-web-plugin