I have some code that ran for hours and then spontaneously threw a NPE:
Exception in thread "main" java.lang.NullPointerException, compiling:(/tmp/form-init1523641998694521475.clj:1:73)
at clojure.lang.Compiler.load(Compiler.java:7391)
at clojure.lang.Compiler.loadFile(Compiler.java:7317)
at clojure.main$load_script.invokeStatic(main.clj:275)
at clojure.main$init_opt.invokeStatic(main.clj:277)
at clojure.main$init_opt.invoke(main.clj:277)
at clojure.main$initialize.invokeStatic(main.clj:308)
at clojure.main$null_opt.invokeStatic(main.clj:342)
at clojure.main$null_opt.invoke(main.clj:339)
at clojure.main$main.invokeStatic(main.clj:421)
at clojure.main$main.doInvoke(main.clj:384)
at clojure.lang.RestFn.invoke(RestFn.java:421)
at clojure.lang.Var.invoke(Var.java:383)
at clojure.lang.AFn.applyToHelper(AFn.java:156)
at clojure.lang.Var.applyTo(Var.java:700)
at clojure.main.main(main.java:37)
Caused by: java.lang.NullPointerException
By the time this happened, the program had done all of the things it usually does, so I don't know why it spontaneously called load-script, which file it was reading, and why it failed.
There is no more context. I don't have any information on how to reproduce this, except to try again and run for a few hours.
Any ideas about how I can diagnose this?
This was an NPE in my own code, but the JVM had decided to omit the stacktrace. This was fixed by using the -XX:-OmitStackTraceInFastThrow JVM flag. This article provided the explanation.
Related
In the past I've use the windows installer provided at clojure.org to install clojure on my various Windows machines. Clojure 1.9 has been out for a few weeks now but still no sign of an installer for Windows or a generic Java-based install, as far as I can find.
I've tried downloading the jars from clojure.org and running
java -jar clojure.1.9.0.jar
but that just dumps stack:
Exception in thread "main" java.lang.ExceptionInInitializerError
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at clojure.lang.RT.classForName(RT.java:2204)
at clojure.lang.RT.classForName(RT.java:2213)
at clojure.lang.RT.loadClassForName(RT.java:2232)
at clojure.lang.RT.load(RT.java:450)
at clojure.lang.RT.load(RT.java:426)
at clojure.core$load$fn__6548.invoke(core.clj:6046)
at clojure.core$load.invokeStatic(core.clj:6045)
at clojure.core$load.doInvoke(core.clj:6029)
at clojure.lang.RestFn.invoke(RestFn.java:408)
at clojure.core$load_one.invokeStatic(core.clj:5848)
at clojure.core$load_one.invoke(core.clj:5843)
at clojure.core$load_lib$fn__6493.invoke(core.clj:5888)
at clojure.core$load_lib.invokeStatic(core.clj:5887)
at clojure.core$load_lib.doInvoke(core.clj:5868)
at clojure.lang.RestFn.applyTo(RestFn.java:142)
at clojure.core$apply.invokeStatic(core.clj:659)
at clojure.core$load_libs.invokeStatic(core.clj:5925)
at clojure.core$load_libs.doInvoke(core.clj:5909)
at clojure.lang.RestFn.applyTo(RestFn.java:137)
at clojure.core$apply.invokeStatic(core.clj:659)
at clojure.core$require.invokeStatic(core.clj:5947)
at clojure.core.server$loading__6434__auto____8456.invoke(server.clj:9)
at clojure.core.server__init.load(Unknown Source)
at clojure.core.server__init.<clinit>(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
at clojure.lang.RT.classForName(RT.java:2204)
at clojure.lang.RT.classForName(RT.java:2213)
at clojure.lang.RT.loadClassForName(RT.java:2232)
at clojure.lang.RT.load(RT.java:450)
at clojure.lang.RT.load(RT.java:426)
at clojure.core$load$fn__6548.invoke(core.clj:6046)
at clojure.core$load.invokeStatic(core.clj:6045)
at clojure.core$load.doInvoke(core.clj:6029)
at clojure.lang.RestFn.invoke(RestFn.java:408)
at clojure.core$load_one.invokeStatic(core.clj:5848)
at clojure.core$load_one.invoke(core.clj:5843)
at clojure.core$load_lib$fn__6493.invoke(core.clj:5888)
at clojure.core$load_lib.invokeStatic(core.clj:5887)
at clojure.core$load_lib.doInvoke(core.clj:5868)
at clojure.lang.RestFn.applyTo(RestFn.java:142)
at clojure.core$apply.invokeStatic(core.clj:659)
at clojure.core$load_libs.invokeStatic(core.clj:5925)
at clojure.core$load_libs.doInvoke(core.clj:5909)
at clojure.lang.RestFn.applyTo(RestFn.java:137)
at clojure.core$apply.invokeStatic(core.clj:659)
at clojure.core$require.invokeStatic(core.clj:5947)
at clojure.core$require.doInvoke(core.clj:5947)
at clojure.lang.RestFn.invoke(RestFn.java:408)
at clojure.lang.Var.invoke(Var.java:381)
at clojure.lang.RT.doInit(RT.java:487)
at clojure.lang.RT.<clinit>(RT.java:336)
at clojure.main.<clinit>(main.java:20)
Caused by: java.io.FileNotFoundException: Could not locate clojure/spec/alpha__init.class or clojure/spec/alpha.clj on classpath.
at clojure.lang.RT.load(RT.java:463)
at clojure.lang.RT.load(RT.java:426)
at clojure.core$load$fn__6548.invoke(core.clj:6046)
at clojure.core$load.invokeStatic(core.clj:6045)
at clojure.core$load.doInvoke(core.clj:6029)
at clojure.lang.RestFn.invoke(RestFn.java:408)
at clojure.core$load_one.invokeStatic(core.clj:5848)
at clojure.core$load_one.invoke(core.clj:5843)
at clojure.core$load_lib$fn__6493.invoke(core.clj:5888)
at clojure.core$load_lib.invokeStatic(core.clj:5887)
at clojure.core$load_lib.doInvoke(core.clj:5868)
at clojure.lang.RestFn.applyTo(RestFn.java:142)
at clojure.core$apply.invokeStatic(core.clj:659)
at clojure.core$load_libs.invokeStatic(core.clj:5925)
at clojure.core$load_libs.doInvoke(core.clj:5909)
at clojure.lang.RestFn.applyTo(RestFn.java:137)
at clojure.core$apply.invokeStatic(core.clj:659)
at clojure.core$require.invokeStatic(core.clj:5947)
at clojure.main$loading__6434__auto____8543.invoke(main.clj:11)
at clojure.main__init.load(Unknown Source)
at clojure.main__init.<clinit>(Unknown Source)
... 55 more
and as I don't have files clojure/spec/alpha__init.class or clojure/spec/alpha.clj it appears that at the moment I'm out of luck.
So - is there a step-by-step to go from having the 1.9.0 jars to making it all run on Windows?
All suggestions welcomed.
TL;DR:
You also have to download org.clojure/spec.alpha and org.clojure/core.specs.alpha. Then start with:
java -cp clojure-1.9.0-alpha17.jar;spec.alpha-0.1.123.jar;core.specs.alpha-0.1.10.jar clojure.main
(Note, that your versions there will be different; and there will be : instad of ; for the unix family of OS).
How to find out about and fetch the other deps
With the recent change in Clojure to use dedicated artifacts for Spec in an alpha sub-namespace, it is no longer easy to start a simple REPL just with the regular jar (e.g. java -jar $CLOJURE_JAR clojure.main). So how to start it now?
As of before you are better off to do a lein new somewhere, change the org.clojure/clojure dependency to the version you like and do a lein deps :tree to fetch all that is needed and display what things org.clojure/core now depends on. E.g.
[org.clojure/clojure "1.9.0-alpha17"]
[org.clojure/core.specs.alpha "0.1.10" :exclusions [[org.clojure/clojure] [org.clojure/spec.alpha]]]
[org.clojure/spec.alpha "0.1.123" :exclusions [[org.clojure/clojure]]]
All your artifacts end up in ~/.m2/repository. So next you have to build up your classpath to call the REPL. You can now run lein with-profile uberjar cp in that dummy project to get the class path Leiningen is using. E.g.:
$ lein with-profile uberjar cp
/tmp/xxx/test:/tmp/xxx/src:/tmp/xxx/resources:/tmp/xxx/target/classes:/home/user/.m2/repository/org/clojure/clojure/1.9.0/clojure-1.9.0.jar:/home/user/.m2/repository/org/clojure/spec.alpha/0.1.143/spec.alpha-0.1.143.jar:/home/user/.m2/repository/org/clojure/core.specs.alpha/0.1.24/core.specs.alpha-0.1.24.jar
# this will be `;` instead of `:` as well here for windows
Remove the test, src, and resources ones and that is, what you have to pass to -cp.
Future solution
As stated in the Getting Started the clojure CLI is not yet available for Windows.
I've got a small app generated by lein new luminus <app-name> +jetty +mongodb +re-frame +cider that errors when running the uberjar command. It works as a dev app run via lein repl.
I've seen similar errors being put down to a dependency mismatch as a result of using Datomic, but that's currently not a dependency in my project.
Here's the stacktrace generated by a call to lein uberjar:
See https://github.com/technomancy/leiningen/wiki/Repeatability)
Retrieving org/clojure/core.async/0.2.374/core.async-0.2.374.jar from central
Retrieving org/clojure/tools.analyzer.jvm/0.6.9/tools.analyzer.jvm-0.6.9.jar from central
Retrieving org/clojure/tools.analyzer/0.6.7/tools.analyzer-0.6.7.jar from central
Compiling myapp.env
Compiling myapp.elastic.common
Compiling myapp.elastic.indexer
Compiling myapp.web.config
Compiling myapp.web.core
Compiling myapp.web.db.core
Compiling myapp.web.handler
Compiling myapp.web.layout
Compiling myapp.web.middleware
Compiling myapp.web.routes.home
Compiling myapp.validation
Compiling ClojureScript...
Retrieving cljsbuild/cljsbuild/1.1.4/cljsbuild-1.1.4.pom from clojars
Retrieving org/clojure/clojurescript/0.0-3211/clojurescript-0.0-3211.pom from central
Retrieving org/clojure/clojure/1.7.0-beta1/clojure-1.7.0-beta1.pom from central
Retrieving cljsbuild/cljsbuild/1.1.4/cljsbuild-1.1.4.jar from clojars
Compiling "target/cljsbuild/public/js/app.js" from ["src/cljc" "src/cljs" "env/prod/cljs"]...
Compiling "target/cljsbuild/public/js/app.js" failed.
Exception in thread "main" java.lang.NoSuchMethodError: com.google.common.base.CharMatcher.javaUpperCase()Lcom/google/common/base/CharMatcher;, compiling:(/private/var/folders/ms/7lyl677n0zz5dnw0wxffj8j00000gn/T/form-init4762266950288731870.clj:1:125)
at clojure.lang.Compiler.load(Compiler.java:7391)
at clojure.lang.Compiler.loadFile(Compiler.java:7317)
at clojure.main$load_script.invokeStatic(main.clj:275)
at clojure.main$init_opt.invokeStatic(main.clj:277)
at clojure.main$init_opt.invoke(main.clj:277)
at clojure.main$initialize.invokeStatic(main.clj:308)
at clojure.main$null_opt.invokeStatic(main.clj:342)
at clojure.main$null_opt.invoke(main.clj:339)
at clojure.main$main.invokeStatic(main.clj:421)
at clojure.main$main.doInvoke(main.clj:384)
at clojure.lang.RestFn.invoke(RestFn.java:421)
at clojure.lang.Var.invoke(Var.java:383)
at clojure.lang.AFn.applyToHelper(AFn.java:156)
at clojure.lang.Var.applyTo(Var.java:700)
at clojure.main.main(main.java:37)
Caused by: java.lang.NoSuchMethodError: com.google.common.base.CharMatcher.javaUpperCase()Lcom/google/common/base/CharMatcher;
at com.google.javascript.jscomp.parsing.JsDocInfoParser.validTemplateTypeName(JsDocInfoParser.java:1233)
at com.google.javascript.jscomp.parsing.JsDocInfoParser.parseAnnotation(JsDocInfoParser.java:953)
at com.google.javascript.jscomp.parsing.JsDocInfoParser.parseHelperLoop(JsDocInfoParser.java:290)
at com.google.javascript.jscomp.parsing.JsDocInfoParser.parse(JsDocInfoParser.java:280)
at com.google.javascript.jscomp.parsing.IRFactory.createJsDocInfoParser(IRFactory.java:910)
at com.google.javascript.jscomp.parsing.IRFactory.handleJsDoc(IRFactory.java:692)
at com.google.javascript.jscomp.parsing.IRFactory.handleJsDoc(IRFactory.java:706)
at com.google.javascript.jscomp.parsing.IRFactory.transform(IRFactory.java:766)
at com.google.javascript.jscomp.parsing.IRFactory$TransformDispatcher.processAstRoot(IRFactory.java:1024)
at com.google.javascript.jscomp.parsing.IRFactory$TransformDispatcher.process(IRFactory.java:2712)
at com.google.javascript.jscomp.parsing.IRFactory.transformTree(IRFactory.java:356)
at com.google.javascript.jscomp.parsing.ParserRunner.parse(ParserRunner.java:129)
at com.google.javascript.jscomp.JsAst.parse(JsAst.java:142)
at com.google.javascript.jscomp.JsAst.getAstRoot(JsAst.java:52)
at com.google.javascript.jscomp.CompilerInput.getAstRoot(CompilerInput.java:118)
at com.google.javascript.jscomp.Compiler.parseInputs(Compiler.java:1443)
at com.google.javascript.jscomp.Compiler.parse(Compiler.java:775)
at com.google.javascript.jscomp.Compiler.compileInternal(Compiler.java:731)
at com.google.javascript.jscomp.Compiler.access$000(Compiler.java:83)
at com.google.javascript.jscomp.Compiler$2.call(Compiler.java:698)
at com.google.javascript.jscomp.Compiler$2.call(Compiler.java:695)
at com.google.javascript.jscomp.CompilerExecutor$2.call(CompilerExecutor.java:93)
at java.util.concurrent.FutureTask.run(FutureTask.java:266)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Uberjar aborting because jar failed: Subprocess failed
I solved a similar problem by adding [com.google.guava/guava "21.0"] to the :dependencies in project.clj
Okay, so the clue was in the dependency mismatch. Although lein deps :tree didn't show anything awry, the issue was with monger depending on com.google.guava/guava.
By adding :exclusions [com.google.guava/guava] to each library that depends on guava (including monger) in the project.clj and moving org.clojure/clojurescript to the top of the dependency list, I was able to get the build working, as the correct version of guava for the version of Clojurescript was used, I suppose.
This question already has an answer here:
Unexpected Difficulties with "Hello, World!"
(1 answer)
Closed 8 years ago.
I just installed Leiningen 2.4.3 using the install script for my Ubuntu 14.04 system. When I attempt to use lein to enter the REPL, I get a rather nasty dump to the console:
charles#charles-930X5J-910S5J-940X5J:~$ lein repl
nREPL server started on port 60889 on host 127.0.0.1 - nrepl://127.0.0.1:60889
Exception in thread "nREPL-worker-0" java.lang.NoSuchMethodError: clojure.tools.nrepl.StdOutBuffer.length()I
at clojure.tools.nrepl.middleware.session$session_out$fn__7630.doInvoke(session.clj:43)
at clojure.lang.RestFn.invoke(RestFn.java:460)
at clojure.tools.nrepl.middleware.session.proxy$java.io.Writer$ff19274a.write(Unknown Source)
at java.io.PrintWriter.write(PrintWriter.java:456)
at java.io.PrintWriter.write(PrintWriter.java:473)
at clojure.core$fn__5471.invoke(core_print.clj:191)
at clojure.lang.MultiFn.invoke(MultiFn.java:231)
at clojure.core$pr_on.invoke(core.clj:3392)
at clojure.core$pr.invoke(core.clj:3404)
at clojure.lang.AFn.applyToHelper(AFn.java:154)
at clojure.lang.RestFn.applyTo(RestFn.java:132)
at clojure.core$apply.invoke(core.clj:624)
at clojure.core$prn.doInvoke(core.clj:3437)
at clojure.lang.RestFn.applyTo(RestFn.java:137)
at clojure.core$apply.invoke(core.clj:624)
at clojure.core$println.doInvoke(core.clj:3457)
at clojure.lang.RestFn.invoke(RestFn.java:408)
at clojure.main$repl_caught.invoke(main.clj:158)
at clojure.tools.nrepl.middleware.interruptible_eval$evaluate$fn__7569$fn__7582.invoke(interruptible_eval.clj:76)
at clojure.main$repl$fn__6634.invoke(main.clj:259)
at clojure.main$repl.doInvoke(main.clj:257)
at clojure.lang.RestFn.invoke(RestFn.java:1096)
at clojure.tools.nrepl.middleware.interruptible_eval$evaluate$fn__7569.invoke(interruptible_eval.clj:56)
at clojure.lang.AFn.applyToHelper(AFn.java:152)
at clojure.lang.AFn.applyTo(AFn.java:144)
at clojure.core$apply.invoke(core.clj:624)
at clojure.core$with_bindings_STAR_.doInvoke(core.clj:1862)
at clojure.lang.RestFn.invoke(RestFn.java:425)
at clojure.tools.nrepl.middleware.interruptible_eval$evaluate.invoke(interruptible_eval.clj:41)
at clojure.tools.nrepl.middleware.interruptible_eval$interruptible_eval$fn__7610$fn__7613.invoke(interruptible_eval.clj:171)
at clojure.core$comp$fn__4192.invoke(core.clj:2402)
at clojure.tools.nrepl.middleware.interruptible_eval$run_next$fn__7603.invoke(interruptible_eval.clj:138)
at clojure.lang.AFn.run(AFn.java:22)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
REPL-y 0.3.2, nREPL 0.2.0-beta5NoSuchMethodError clojure.tools.nrepl.StdOutBuffer.length()I clojure.tools.nrepl.middleware.session/session-out/fn--7630 (session.clj:43)NoSuchMethodError clojure.tools.nrepl.StdOutBuffer.length()I clojure.tools.nrepl.middleware.session/session-out/fn--7630 (session.clj:43)#Exception in thread "nREPL-worker-1" java.lang.NoSuchMethodError: clojure.tools.nrepl.StdOutBuffer.length()I
at clojure.tools.nrepl.middleware.session$session_out$fn__7630.doInvoke(session.clj:43)
at clojure.lang.RestFn.invoke(RestFn.java:460)
at clojure.tools.nrepl.middleware.session.proxy$java.io.Writer$ff19274a.write(Unknown Source)
at java.io.PrintWriter.write(PrintWriter.java:456)
at java.io.PrintWriter.write(PrintWriter.java:473)
at clojure.core$fn__5471.invoke(core_print.clj:191)
at clojure.lang.MultiFn.invoke(MultiFn.java:231)
at clojure.core$pr_on.invoke(core.clj:3392)
at clojure.core$pr.invoke(core.clj:3404)
at clojure.lang.AFn.applyToHelper(AFn.java:154)
at clojure.lang.RestFn.applyTo(RestFn.java:132)
at clojure.core$apply.invoke(core.clj:624)
at clojure.core$prn.doInvoke(core.clj:3437)
at clojure.lang.RestFn.applyTo(RestFn.java:137)
at clojure.core$apply.invoke(core.clj:624)
at clojure.core$println.doInvoke(core.clj:3457)
at clojure.lang.RestFn.invoke(RestFn.java:408)
at clojure.main$repl_caught.invoke(main.clj:158)
at clojure.tools.nrepl.middleware.interruptible_eval$evaluate$fn__7569$fn__7582.invoke(interruptible_eval.clj:76)
at clojure.main$repl$fn__6634.invoke(main.clj:259)
at clojure.main$repl.doInvoke(main.clj:257)
at clojure.lang.RestFn.invoke(RestFn.java:1096)
at clojure.tools.nrepl.middleware.interruptible_eval$evaluate$fn__7569.invoke(interruptible_eval.clj:56)
at clojure.lang.AFn.applyToHelper(AFn.java:152)
at clojure.lang.AFn.applyTo(AFn.java:144)
at clojure.core$apply.invoke(core.clj:624)
at clojure.core$with_bindings_STAR_.doInvoke(core.clj:1862)
at clojure.lang.RestFn.invoke(RestFn.java:425)
at clojure.tools.nrepl.middleware.interruptible_eval$evaluate.invoke(interruptible_eval.clj:41)
at clojure.tools.nrepl.middleware.interruptible_eval$interruptible_eval$fn__7610$fn__7613.invoke(interruptible_eval.clj:171)
at clojure.core$comp$fn__4192.invoke(core.clj:2402)
at clojure.tools.nrepl.middleware.interruptible_eval$run_next$fn__7603.invoke(interruptible_eval.clj:138)
at clojure.lang.AFn.run(AFn.java:22)
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617)
at java.lang.Thread.run(Thread.java:745)
Error loading namespace; falling back to userNoSuchMethodError clojure.tools.nrepl.StdOutBuffer.length()I clojure.tools.nrepl.middleware.session/session-out/fn--7630 (session.clj:43)NoSuchMethodError clojure.tools.nrepl.StdOutBuffer.length()I clojure.tools.nrepl.middleware.session/session-out/fn--7630 (session.clj:43)user=>
I need some help interpreting what this means and how to fix it. Running JDK 1.8.0_20
This is a known bug with lein 2.4.3. Until a new stable version is available, it can be fixed by running the following code:
lein upgrade 2.4.2. Also, this problem only shows up in projectless repls, if you create a new project, and run lein from inside the project directory, the error will not occur.
I installed leiningen on my Ubuntu, but it throws a "Connection refused" error when I run lein repl. Here's the error:
$ lein repl
Exception in thread "Thread-4" java.net.ConnectException: Connection refused
at java.net.PlainSocketImpl.socketConnect(Native Method)
at java.net.AbstractPlainSocketImpl.doConnect(AbstractPlainSocketImpl.java:339)
at java.net.AbstractPlainSocketImpl.connectToAddress(AbstractPlainSocketImpl.java:200)
at java.net.AbstractPlainSocketImpl.connect(AbstractPlainSocketImpl.java:182)
at java.net.SocksSocketImpl.connect(SocksSocketImpl.java:391)
at java.net.Socket.connect(Socket.java:579)
at java.net.Socket.connect(Socket.java:528)
at java.net.Socket.<init>(Socket.java:425)
at java.net.Socket.<init>(Socket.java:208)
at clojure.tools.nrepl$connect.doInvoke(nrepl.clj:184)
at clojure.lang.RestFn.invoke(RestFn.java:421)
at clojure.tools.nrepl.ack$send_ack.invoke(ack.clj:47)
at clojure.tools.nrepl.server$start_server.doInvoke(server.clj:146)
at clojure.lang.RestFn.invoke(RestFn.java:619)
at user$eval540.invoke(NO_SOURCE_FILE:0)
at clojure.lang.Compiler.eval(Compiler.java:6619)
at clojure.lang.Compiler.eval(Compiler.java:6609)
at clojure.lang.Compiler.eval(Compiler.java:6582)
at clojure.core$eval.invoke(core.clj:2852)
at leiningen.core.eval$fn__3577.invoke(eval.clj:304)
at clojure.lang.MultiFn.invoke(MultiFn.java:231)
at leiningen.core.eval$eval_in_project.invoke(eval.clj:326)
at clojure.lang.AFn.applyToHelper(AFn.java:167)
at clojure.lang.AFn.applyTo(AFn.java:151)
at clojure.core$apply.invoke(core.clj:619)
at leiningen.repl$server$fn__7443.invoke(repl.clj:201)
at clojure.lang.AFn.applyToHelper(AFn.java:159)
at clojure.lang.AFn.applyTo(AFn.java:151)
at clojure.core$apply.invoke(core.clj:617)
at clojure.core$with_bindings_STAR_.doInvoke(core.clj:1788)
at clojure.lang.RestFn.invoke(RestFn.java:425)
at clojure.lang.AFn.applyToHelper(AFn.java:163)
at clojure.lang.RestFn.applyTo(RestFn.java:132)
at clojure.core$apply.invoke(core.clj:621)
at clojure.core$bound_fn_STAR_$fn__4102.doInvoke(core.clj:1810)
at clojure.lang.RestFn.invoke(RestFn.java:397)
at clojure.lang.AFn.run(AFn.java:24)
at java.lang.Thread.run(Thread.java:722)
I had saw a question like this at github:lein repl error, but it doesn't solve my problem. Anyone knows why?
environment
os: ubuntu 12.04
leningen: Leiningen 2.3.4
java: 1.7.0_21
First of all your stack trace is missing the Caused by... original exception.I didn't experienced it but I has been able to reproduce it getting the same stacktrace j plus these lines
Caused by: java.net.UnknownHostException: i7mito: System error
at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method)
at java.net.InetAddress$1.lookupAllHostAddr(InetAddress.java:894)
at java.net.InetAddress.getAddressesFromNameService(InetAddress.java:1286)
at java.net.InetAddress.getLocalHost(InetAddress.java:1462)
... 36 more
if I removed my machine name (i7mito) from the /etc/hosts/ file and I left it like
127.0.0.1 localhost
So my guess is that lein relies on the DNS to resolve your machine name ( i7mito in my case) to an IP address. The first step in this name resolution is your hosts file so I would check that first. I realized that the IP you bind to localhost doesn't matter, it's the IP that it's binded to the result of the hostname command what matters.
So if you ensure that your machine name it's mapped to 127.0.0.1 on the /etc/hosts file it may work. If it doesn't check your network configuration as other users are pointed out as it seems something related.
Hope it helps, of course this applies if you get the same extra lines on the stacktrace :)
I'm just starting learning Clojure and web programming. I've installed Leiningen 2.0.0-preview2 on Clojure 1.3.0 and it can create projects correctly. But I always got That's not a task. Use "lein help" to list all tasks. error when I ran lein plugin install lein-noir 1.2.1 to install noir.
I've also tried to added lein-noir as a :dev-dependencies into project.clj and ran lein deps but it did nothing.
Does anyone know what's the problem and how can I resolve it. Thanks a lot!
My environment:
Mac OS X 10.6.8
Java 6
Leiningen 2.0.0-preview2
I've also tryed Leiningen 1.7 but got different error and someone said it's because leiningen 1.7 can only work with Clojure 1.2.x
Here's the error when I use Leiningen 1.7:
Exception in thread "main" java.lang.RuntimeException: java.lang.NoSuchMethodError: clojure.lang.KeywordLookupSite.(ILclojure/lang/Keyword;)V
at clojure.lang.Util.runtimeException(Util.java:165)
at clojure.lang.Compiler.eval(Compiler.java:6476)
at clojure.lang.Compiler.eval(Compiler.java:6431)
at clojure.core$eval.invoke(core.clj:2795)
at clojure.main$eval_opt.invoke(main.clj:296)
at clojure.main$initialize.invoke(main.clj:315)
at clojure.main$script_opt.invoke(main.clj:339)
at clojure.main$main.doInvoke(main.clj:426)
at clojure.lang.RestFn.invoke(RestFn.java:551)
at clojure.lang.Var.invoke(Var.java:426)
at clojure.lang.AFn.applyToHelper(AFn.java:193)
at clojure.lang.Var.applyTo(Var.java:518)
at clojure.main.main(main.java:37)
Caused by: java.lang.NoSuchMethodError: clojure.lang.KeywordLookupSite.(ILclojure/lang/Keyword;)V
at leiningen.util.plugins$stale_QMARK_.(plugins.clj:68)
at leiningen.util.plugins__init.load(Unknown Source)
at leiningen.util.plugins__init.(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at clojure.lang.RT.loadClassForName(RT.java:2030)
at clojure.lang.RT.load(RT.java:417)
at clojure.lang.RT.load(RT.java:398)
at clojure.core$load$fn__4610.invoke(core.clj:5386)
at clojure.core$load.doInvoke(core.clj:5385)
at clojure.lang.RestFn.invoke(RestFn.java:408)
at clojure.core$load_one.invoke(core.clj:5200)
at clojure.core$load_lib.doInvoke(core.clj:5237)
at clojure.lang.RestFn.applyTo(RestFn.java:142)
at clojure.core$apply.invoke(core.clj:602)
at clojure.core$load_libs.doInvoke(core.clj:5271)
at clojure.lang.RestFn.applyTo(RestFn.java:137)
at clojure.core$apply.invoke(core.clj:604)
at clojure.core$use.doInvoke(core.clj:5363)
at clojure.lang.RestFn.invoke(RestFn.java:482)
at leiningen.core$loading__4414__auto__.invoke(core.clj:1)
at leiningen.core__init.load(Unknown Source)
at leiningen.core__init.(Unknown Source)
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Class.java:264)
at clojure.lang.RT.loadClassForName(RT.java:2030)
at clojure.lang.RT.load(RT.java:417)
at clojure.lang.RT.load(RT.java:398)
at clojure.core$load$fn__4610.invoke(core.clj:5386)
at clojure.core$load.doInvoke(core.clj:5385)
at clojure.lang.RestFn.invoke(RestFn.java:408)
at clojure.core$load_one.invoke(core.clj:5200)
at clojure.core$load_lib.doInvoke(core.clj:5237)
at clojure.lang.RestFn.applyTo(RestFn.java:142)
at clojure.core$apply.invoke(core.clj:602)
at clojure.core$load_libs.doInvoke(core.clj:5271)
at clojure.lang.RestFn.applyTo(RestFn.java:137)
at clojure.core$apply.invoke(core.clj:604)
at clojure.core$use.doInvoke(core.clj:5363)
at clojure.lang.RestFn.invoke(RestFn.java:408)
at user$eval1.invoke(NO_SOURCE_FILE:1)
at clojure.lang.Compiler.eval(Compiler.java:6465)
... 11 more
If you have added lein-noir to .lein/profiles.clj like above you need to run the command :
lein new noir yoursitename.
Not lein noir new my-website !
Also add lein-noir "1.2.1"
Leiningen 2 is very new. Most of the documentation out there is still describing how to do things with leiningen 1.7.0. The ways you've tried to install lein-noir don't work with leiningen 2. The documentation describing how lein version 2 is different from lein 1.7.0 can be found here.
In a nutshell, you need to create a profiles.clj file in your ~/.lein directory. To specify you want to use lein-noir, your ~/.lein/profiles.clj file should look like:
{:user {:plugins [[lein-noir "1.2.1"]]}}
Now you can create a new noir project by typing:
lein new noir projectname