Question

使用以下代码生成类问候语。

project.clj

   (defproject greeting "0.1.0-SNAPSHOT"
     :description "FIXME: write description"
     :url "http://example.com/FIXME"
     :license {:name "Eclipse Public License"
     :url "http://www.eclipse.org/legal/epl-v10.html"}
     :dependencies [[org.clojure/clojure "1.7.0"]]
     :aot [greeting.core]
    )

的src /问候/ core.clj

(ns greeting.core
  (:gen-class
   :name Greeting
   :init create
   :constructors {[String] []}
   :methods [(greet [String] String)] 
   :state data))

(defn -create
  "Construct instance with a String."
 [s]
 [[] ;; super class args
  s])

(defn -greet
 "Return greeting based on the constructed data."
  [this n]
  (str (.data this) " " n "!"))

这些代码来自http://www.coderanch.com/t/601586/clojure/Calling-Clojure-Java-code。可以从java类中调用。

现在通过

编译到jar

  lein uberjar

并将独立jar导入WSO2 AS服务器，并出现以下错误

错误：clojure.lang.Namespace中的java.lang.ExceptionInInitializerError。（Namespace.java:34）at clojure.lang.Name.findOrCreate（Namespace.java:176）at clojure.lang.Var.internPrivate（Var.java:151）at Greeting。（Unknown Source）at at java.lang.Class.forName0（Native Method）at java.lang.Class.forName（Class.java:278）at org.apache.axis2.description.java2wsdl.DefaultSchemaGenerator。（DefaultSchemaGenerator.java:140）at at org.apache.axis2.deployment.util.Utils.fillAxisService(Utils.java:453）at org.apache.axis2.deployment.ServiceBuilder.populateService(ServiceBuilder.java:397）at at org.apache.axis2.deployment.ServiceGroupBuilder.populateServiceGroup（ServiceGroupBuilder.java:101）at org.apache.axis2.deployment.repository.util.ArchiveReader.buildServiceGroup（ArchiveReader.java:109）at at org.apache.axis2.deployment.repository.util.ArchiveReader.processServiceGroup（ArchiveReader.java:143）at org.apache.axis2.deployment.ServiceDeployer.deploy（ServiceDeployer.java:82）at at org.apache.axis2.deployment.repository.util.DeploymentFileData.deploy（DeploymentFileData.java:136）at at org.apache.axis2.deployment.DeploymentEngine.doDeploy（DeploymentEngine.java:807）at at org.apache.axis2.deployment.repository.util.WSInfoList.update(WSInfoList.java:144）at org.apache.axis2.deployment.RepositoryListener.update（RepositoryListener.java:377）at at org.apache.axis2.deployment.RepositoryListener.checkServices（RepositoryListener.java:254）at at org.apache.axis2.deployment.RepositoryListener.startListener（RepositoryListener.java:371）at at 或者.apache.axis。 org.apache.axis2.deployment.scheduler.SchedulerTask.run（SchedulerTask.java:67）at org.wso2.carbon.core.deployment.CarbonDeploymentSchedulerTask.runAxisDeployment（CarbonDeploymentSchedulerTask.java:79）at at org.wso2.carbon.core.deployment.CarbonDeploymentSchedulerTask.run（CarbonDeploymentSchedulerTask.java:124）at at java.util.concurrent.Executors $ RunnableAdapter.call（Executors.java:471）at java.util.concurrent.FutureTask.runAndReset（FutureTask.java:304）at at java.util.concurrent.ScheduledThreadPoolExecutor $ ScheduledFutureTask.access $ 301（ScheduledThreadPoolExecutor.java:178）at at java.util.concurrent.ScheduledThreadPoolExecutor $ ScheduledFutureTask.run（ScheduledThreadPoolExecutor.java:293）at at java.util.concurrent.ThreadPoolExecutor.runWorker（ThreadPoolExecutor.java:1145）at at java.util.concurrent.ThreadPoolExecutor $ Worker.run（ThreadPoolExecutor.java:615）at java.lang.Thread.run（Thread.java:745）引起： java.io.FileNotFoundException：找不到类路径上的clojure / core__init.class或clojure / core.clj。在clojure.lang.RT.load（RT.java:449）at clojure.lang.RT.load（RT.java:412）在clojure.lang.RT.doInit（RT.java:454）at clojure.lang.RT。（RT.java:330）... 30多个

我错过了什么吗？或者如何摆脱它？

Answer 1

对于Axis2，为每个服务使用单独的Class Loader，而Clojure Class Loader默认使用上下文类加载器，因此当加载jar文件时，Alo-class中的Clojue对象将由Clojure类加载器加载，并且Clojure类加载器，上下文类加载器，没有关于jar路径的信息，因此无法找到core__init.class。

通过使用axis2的costum部署程序修复它，重载depoly方法，并将上下文类加载器设置为与服务类加载器相同。

this answer给了我很多帮助。有些other reference可能会给出一个提示。谢谢所有人！

在加载到AXIS2时，在Clojure中生成的类得到java.lang.ExceptionInInitializerError

1 个答案: