问题描述
我有一个hello.clj如下。
(ns hello)
(defn hi [](printlnHI))
通常,我可以使用main.clj中的这个函数,如下所示。 hello.clj在包含main.clj的同一目录中。和类路径包括。 (当前路径)。
(使用'hello)
(hi)
$ c $如何将这个hello.clj用于'lein uberjar'?
我用'lein new myproject; lein deps'得到以下结构。
。
| - README
| - classes
| ` - myproject
| - lib
| | - clojure-1.2.0-beta1.jar
| | - clojure-contrib-1.2.0-beta1.jar
| ` - lucene-core-3.0.2.jar
| - project.clj
| - src
| ` - myproject
| ` - core.clj
` - test
` - myproject
` - test
` - core.clj
project.clj如下。
(defproject myproject1.0.0 -SNAPSHOT
:descriptionFIXME:write
:dependencies [[org.clojure / clojure1.2.0-beta1]
[org.clojure / clojure-contrib 0-beta1]
[org.apache.lucene / lucene-core3.0.2]]
:main myproject.core)
而且core.clj如下。
(ns myproject .core
(:gen-class))
(use'hello)
(defn test1 [](printlnhello))
(defn -main [& args]
(do
(println欢迎来到我的项目!这些是你的参数:args)
(test1)
(hi)))
现在,我在哪里放hello.clj?
我试图将其复制到myproject / src目录并运行uberjar来获取jar。但是,运行该jar会导致此错误消息。
prosseek:myproject smcho $ java -jar myproject-1.0.0-SNAPSHOT- standalone。 jar add
线程main中的异常java.lang.ExceptionInInitializerError
原因:java.io.FileNotFoundException:无法在类路径上找到hello__init.class或hello.clj:(core.clj:0)
...
- 可能有什么问题?错误消息说hello.clj不在类路径上。但是,如何使用lein uberjar设置类路径?
我上传了项目。
解决方案你把hello.clj放在src / myproject下,所以它的ns应该是myproject.hello。有了这个文件结构,我希望hello.clj说(ns myproject.hello)
和core.clj说(使用'myproject。
当我进行这些更改时,我会得到:
$ java -jar myproject-standalone.jar abc
欢迎来到我的项目!这些是你的参数:(a b c)
hello
HI
I have a hello.clj as follows.
(ns hello)
(defn hi [] (println "HI"))
Normally, I can use this function from main.clj as follows. The hello.clj is in the same directory that contains main.clj. And the classpath includes . (current path).
(use 'hello)
(hi)
How can I use this hello.clj for the 'lein uberjar'?
I used 'lein new myproject; lein deps' to get the following structure.
.
|-- README
|-- classes
| `-- myproject
|-- lib
| |-- clojure-1.2.0-beta1.jar
| |-- clojure-contrib-1.2.0-beta1.jar
| `-- lucene-core-3.0.2.jar
|-- project.clj
|-- src
| `-- myproject
| `-- core.clj
`-- test
`-- myproject
`-- test
`-- core.clj
project.clj is as follows.
(defproject myproject "1.0.0-SNAPSHOT"
:description "FIXME: write"
:dependencies [[org.clojure/clojure "1.2.0-beta1"]
[org.clojure/clojure-contrib "1.2.0-beta1"]
[org.apache.lucene/lucene-core "3.0.2"]]
:main myproject.core)
And core.clj is as follows.
(ns myproject.core
(:gen-class))
(use 'hello)
(defn test1 [] (println "hello"))
(defn -main [& args]
(do
(println "Welcome to my project! These are your args:" args)
(test1)
(hi)))
Now, where do I put the hello.clj?I tried to copy it to myproject/src directory and run uberjar to get the jar. But, running the jar causes this error message.
prosseek:myproject smcho$ java -jar myproject-1.0.0-SNAPSHOT-standalone.jar a d d
Exception in thread "main" java.lang.ExceptionInInitializerError
Caused by: java.io.FileNotFoundException: Could not locate hello__init.class or hello.clj on classpath: (core.clj:0)
...
- What might be wrong? Error messages says hello.clj is not on the class path. But, how to setup the classpath with 'lein uberjar'?
I uploaded the project here.
解决方案 You put hello.clj under src/myproject so it's ns should be myproject.hello. With this file structure, I would expect hello.clj to say (ns myproject.hello)
and for core.clj to say (use 'myproject.hello)
.
When I make those changes, I get:
$ java -jar myproject-standalone.jar a b c
Welcome to my project! These are your args: (a b c)
hello
HI
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