java.lang.NoClassDefFoundError: opennlp.model.GenericModelReader

Question

我在android上的一个应用程序开发遇到了问题，我想知道是否有人可以给我任何帮助。我正在开发一个应用程序在安卓转换英语段落到马拉雅拉姆语。为此，我使用opennlp库。我使用的是opennlp模型，比如en-sen.bin，en-token.bin。我使用"en-parser-chunking.bin“模型解析一个句子，生成如下所示的解析句子。(TOP (S (NP (NN Programcreek) ) (VP (VBZ is) (NP (DT a) (ADJP (RB very) (JJ huge) (CC and) (JJ useful) )) (.网站)))我在netbeans中得到了正确的解析句子，但在android中我得到了错误。错误是这样的。

06-10 08:11:55.420: W/dalvikvm(1623): threadid=1: thread exiting with uncaught exception (group=0xb3ad6b90)
***06-10 08:11:55.440: E/AndroidRuntime(1623): FATAL EXCEPTION: main
06-10 08:11:55.440: E/AndroidRuntime(1623): Process: com.example.opennlp1, PID: 1623
06-10 08:11:55.440: E/AndroidRuntime(1623): java.lang.NoClassDefFoundError: opennlp.model.GenericModelReader
06-10 08:11:55.440: E/AndroidRuntime(1623):     at opennlp.tools.util.model.GenericModelSerializer.create(GenericModelSerializer.java:35)***
06-10 08:11:55.440: E/AndroidRuntime(1623):     at opennlp.tools.util.model.GenericModelSerializer.create(GenericModelSerializer.java:31)
06-10 08:11:55.440: E/AndroidRuntime(1623):     at opennlp.tools.util.model.BaseModel.loadModel(BaseModel.java:231)
06-10 08:11:55.440: E/AndroidRuntime(1623):     at opennlp.tools.util.model.BaseModel.<init>(BaseModel.java:181)
06-10 08:11:55.440: E/AndroidRuntime(1623):     at opennlp.tools.sentdetect.SentenceModel.<init>(SentenceModel.java:95)
06-10 08:11:55.440: E/AndroidRuntime(1623):     at com.example.opennlp1.MainActivity.SentenceDetect(MainActivity.java:52)
06-10 08:11:55.440: E/AndroidRuntime(1623):     at com.example.opennlp1.MainActivity.onCreate(MainActivity.java:33)
06-10 08:11:55.440: E/AndroidRuntime(1623):     at android.app.Activity.performCreate(Activity.java:5243)
06-10 08:11:55.440: E/AndroidRuntime(1623):     at android.app.Instrumentation.callActivityOnCreate(Instrumentation.java:1087)
06-10 08:11:55.440: E/AndroidRuntime(1623):     at android.app.ActivityThread.performLaunchActivity(ActivityThread.java:2140)
06-10 08:11:55.440: E/AndroidRuntime(1623):     at android.app.ActivityThread.handleLaunchActivity(ActivityThread.java:2226)
06-10 08:11:55.440: E/AndroidRuntime(1623):     at android.app.ActivityThread.access$700(ActivityThread.java:135)
06-10 08:11:55.440: E/AndroidRuntime(1623):     at android.app.ActivityThread$H.handleMessage(ActivityThread.java:1397)
06-10 08:11:55.440: E/AndroidRuntime(1623):     at android.os.Handler.dispatchMessage(Handler.java:102)

有人能帮我解决这个错误吗？

Answer 1

当java虚拟机不能在运行时期间找到编译期间可用的类时，通常会发生此错误。为了修复它，请检查项目中的.classpath文件，可能类路径中缺少您添加的jar文件。自己在.classpath文件中写入它的路径，您的程序就应该可以工作了。

请查看此链接：http://javarevisited.blogspot.com/2011/06/noclassdeffounderror-exception-in.html