Exception on Reflection while running examples

Question

Exception on Reflection while running examples

rcarmo opened this issue 6 years ago · comments

Apparently needs some updates. Checked the deps and fiddled with lein a bit, but can't even get the examples to run.

fn-fx$ java -version
java version "1.8.0_131"
Java(TM) SE Runtime Environment (build 1.8.0_131-b11)
Java HotSpot(TM) 64-Bit Server VM (build 25.131-b11, mixed mode)

fn-fx$ clj examples/getting_started/01_hello_word.clj 
Exception in thread "main" java.lang.ClassNotFoundException: org.reflections.Reflections, compiling:(fn_fx/util/reflect_utils.clj:1:1)
	at clojure.lang.Compiler.load(Compiler.java:7526)
	at clojure.lang.RT.loadResourceScript(RT.java:379)
	at clojure.lang.RT.loadResourceScript(RT.java:370)
	at clojure.lang.RT.load(RT.java:460)
	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:482)
	at fn_fx.render_core$eval159$loading__6434__auto____160.invoke(render_core.clj:1)
	at fn_fx.render_core$eval159.invokeStatic(render_core.clj:1)
	at fn_fx.render_core$eval159.invoke(render_core.clj:1)
	at clojure.lang.Compiler.eval(Compiler.java:7062)
	at clojure.lang.Compiler.eval(Compiler.java:7051)
	at clojure.lang.Compiler.load(Compiler.java:7514)
	at clojure.lang.RT.loadResourceScript(RT.java:379)
	at clojure.lang.RT.loadResourceScript(RT.java:370)
	at clojure.lang.RT.load(RT.java:460)
	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:436)
	at fn_fx.fx_dom$eval153$loading__6434__auto____154.invoke(fx_dom.clj:1)
	at fn_fx.fx_dom$eval153.invokeStatic(fx_dom.clj:1)
	at fn_fx.fx_dom$eval153.invoke(fx_dom.clj:1)
	at clojure.lang.Compiler.eval(Compiler.java:7062)
	at clojure.lang.Compiler.eval(Compiler.java:7051)
	at clojure.lang.Compiler.load(Compiler.java:7514)
	at clojure.lang.RT.loadResourceScript(RT.java:379)
	at clojure.lang.RT.loadResourceScript(RT.java:370)
	at clojure.lang.RT.load(RT.java:460)
	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:436)
	at getting_started.01_hello_word$eval147$loading__6434__auto____148.invoke(01_hello_word.clj:1)
	at getting_started.01_hello_word$eval147.invokeStatic(01_hello_word.clj:1)
	at getting_started.01_hello_word$eval147.invoke(01_hello_word.clj:1)
	at clojure.lang.Compiler.eval(Compiler.java:7062)
	at clojure.lang.Compiler.eval(Compiler.java:7051)
	at clojure.lang.Compiler.load(Compiler.java:7514)
	at clojure.lang.Compiler.loadFile(Compiler.java:7452)
	at clojure.main$load_script.invokeStatic(main.clj:278)
	at clojure.main$script_opt.invokeStatic(main.clj:338)
	at clojure.main$script_opt.invoke(main.clj:333)
	at clojure.main$main.invokeStatic(main.clj:424)
	at clojure.main$main.doInvoke(main.clj:387)
	at clojure.lang.RestFn.applyTo(RestFn.java:137)
	at clojure.lang.Var.applyTo(Var.java:702)
	at clojure.main.main(main.java:37)
Caused by: java.lang.ClassNotFoundException: org.reflections.Reflections
	at java.net.URLClassLoader.findClass(URLClassLoader.java:381)
	at clojure.lang.DynamicClassLoader.findClass(DynamicClassLoader.java:69)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:424)
	at clojure.lang.DynamicClassLoader.loadClass(DynamicClassLoader.java:77)
	at java.lang.ClassLoader.loadClass(ClassLoader.java:357)
	at java.lang.Class.forName0(Native Method)
	at java.lang.Class.forName(Class.java:348)
	at clojure.lang.RT.classForName(RT.java:2204)
	at clojure.lang.RT.classForNameNonLoading(RT.java:2217)
	at fn_fx.util.reflect_utils$eval629$loading__6434__auto____630.invoke(reflect_utils.clj:1)
	at fn_fx.util.reflect_utils$eval629.invokeStatic(reflect_utils.clj:1)
	at fn_fx.util.reflect_utils$eval629.invoke(reflect_utils.clj:1)
	at clojure.lang.Compiler.eval(Compiler.java:7062)
	at clojure.lang.Compiler.eval(Compiler.java:7051)
	at clojure.lang.Compiler.load(Compiler.java:7514)
	... 93 more

Peter Monks · Answer 1 · Sun Oct 14 2018 03:13:27 GMT+0800 (China Standard Time)

@rcarmo right now you have to use leiningen to run the examples - the Clojure command line tools (which provide the clj executable) won't download dependencies, as the project doesn't have a deps.edn file yet (aside: I have tried creating a deps.edn but haven't gotten it functioning yet - issue #49 captures this request).

Here's how I ran the hello world example from the openjdk branch:

Script started on Sat Oct 13 12:08:47 2018
bash-3.2$ java -version
openjdk version "11" 2018-09-25
OpenJDK Runtime Environment 18.9 (build 11+28)
OpenJDK 64-Bit Server VM 18.9 (build 11+28, mixed mode)
bash-3.2$ lein do version, deps, repl
Leiningen 2.8.1 on Java 11 OpenJDK 64-Bit Server VM
nREPL server started on port 61325 on host 127.0.0.1 - nrepl://127.0.0.1:61325
REPL-y 0.3.7, nREPL 0.2.12
Clojure 1.9.0
OpenJDK 64-Bit Server VM 11+28
    Docs: (doc function-name-here)
          (find-doc "part-of-name-here")
  Source: (source function-name-here)
 Javadoc: (javadoc java-object-or-class-here)
    Exit: Control+D or (exit) or (quit)
 Results: Stored in vars *1, *2, *3, an exception in *e

user=> (require '[getting-started.01-hello-word])
nil
user=> ; at this point a window appears, containing a single "Say 'Hello World'" button

user=> ; I click the button:

user=> Received Event:  {:say Hello World!, :fn-fx/includes {}}


user=> exit
Bye for now!
bash-3.2$ exit
exit
Script done on Sat Oct 13 12:10:00 2018

Would you mind giving this a go, and reporting back your results?