我正在开发一个Web应用程序，该应用程序需要订购给定GitHub用户在从最常用语言到最少使用语言的所有存储库中使用的语言。作为此过程的一部分，我执行以下操作：
CreateNewUser.java
//store a mapping of languages to bytes written in that language
Map<String, Long> allLangs = new HashMap<>();
//get all repositories for the user
Map<String, GHRepository> repositories = github.getMyself().getRepositories();
//loop through each repository
for (String repo : repositories.keySet()) {
//get languages specific to repository mapped to bytes written in languages
Map<String, Long> languages = repositories.get(repo).listLanguages();
//loop through languages in repository
for (String lang : languages.keySet()) {
//if the global language map contains the key
if (allLangs.containsKey(lang)) {
//add the value for this repository to the total bytes written
//**exception is thrown here**
allLangs.replace(lang, languages.get(lang) + allLangs.get(lang)); //line 73
} else {
//just add the number of bytes written
allLangs.put(lang, languages.get(lang));
}
}
}
当我运行应用程序时，抛出以下异常：
Java.lang.ClassCastException: java.lang.Integer cannot be cast to java.lang.Long
at Application.CreateNewUser.processRequest(CreateNewUser.java:73)
at Application.CreateNewUser.doGet(CreateNewUser.java:117)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:687)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:790)
at org.apache.catalina.core.StandardWrapper.service(StandardWrapper.java:1682)
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:318)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:160)
at org.apache.catalina.core.StandardPipeline.doInvoke(StandardPipeline.java:734)
at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:673)
at com.sun.enterprise.web.WebPipeline.invoke(WebPipeline.java:99)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:174)
at org.apache.catalina.connector.CoyoteAdapter.doService(CoyoteAdapter.java:415)
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:282)
at com.sun.enterprise.v3.services.impl.ContainerMapper$HttpHandlerCallable.call(ContainerMapper.java:459)
at com.sun.enterprise.v3.services.impl.ContainerMapper.service(ContainerMapper.java:167)
at org.glassfish.grizzly.http.server.HttpHandler.runService(HttpHandler.java:201)
at org.glassfish.grizzly.http.server.HttpHandler.doHandle(HttpHandler.java:175)
at org.glassfish.grizzly.http.server.HttpServerFilter.handleRead(HttpServerFilter.java:235)
at org.glassfish.grizzly.filterchain.ExecutorResolver$9.execute(ExecutorResolver.java:119)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeFilter(DefaultFilterChain.java:284)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.executeChainPart(DefaultFilterChain.java:201)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.execute(DefaultFilterChain.java:133)
at org.glassfish.grizzly.filterchain.DefaultFilterChain.process(DefaultFilterChain.java:112)
at org.glassfish.grizzly.ProcessorExecutor.execute(ProcessorExecutor.java:77)
at org.glassfish.grizzly.nio.transport.TCPNIOTransport.fireIOEvent(TCPNIOTransport.java:561)
at org.glassfish.grizzly.strategies.AbstractIOStrategy.fireIOEvent(AbstractIOStrategy.java:112)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.run0(WorkerThreadIOStrategy.java:117)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy.access$100(WorkerThreadIOStrategy.java:56)
at org.glassfish.grizzly.strategies.WorkerThreadIOStrategy$WorkerThreadRunnable.run(WorkerThreadIOStrategy.java:137)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.doWork(AbstractThreadPool.java:565)
at org.glassfish.grizzly.threadpool.AbstractThreadPool$Worker.run(AbstractThreadPool.java:545)
at java.lang.Thread.run(Thread.java:745)
我尝试使用多种方法将标记为languages.get(lang) + allLangs.get(lang)的行（第73行）上的值//**exception is thrown here**转换为Long，但没有成功。有什么想法吗？