java - 线程中的异常 "main"java.lang.IllegalArgumentException : in must not be null

Question

我尝试使用 OpenNLP 库来使用其句子检测器，并尝试编写以下代码，但出现与此 en-sent.bin 文件的地址相关的异常，但我没有知道如何处理该文件。

import java.io.*;
import java.net.URL;

import opennlp.tools.sentdetect.SentenceDetectorME;
import opennlp.tools.sentdetect.SentenceModel;
public class SentenceDetect 
{

       private SentenceDetectorME sentenceDetector;

        public void init()
        {
            /** Load and initialize the sentence detection model */

            InputStream modelIn = null;
            SentenceModel model = null;

            try {

                modelIn = SentenceDetect.class.getClassLoader().getResourceAsStream("Tokenizer/models/en-sent.bin");
                model = new SentenceModel(modelIn); //*<- line 36*
                }
            catch (IOException e) 
                {
                  e.printStackTrace();
                }
            finally {
                  if (modelIn != null) {
                        try {
                          modelIn.close();
                        }
                        catch (IOException e) {}
                      }
                }

            sentenceDetector = new SentenceDetectorME(model);

        }

        public String[] getSentences(String longSentence)
        {
            return sentenceDetector.sentDetect(longSentence);
        }

}

主类:

public static void main(String[] args)
    {

       SentenceDetect d = new SentenceDetect();


       d.init();   ///*<- line 10*

       String[] s = d.getSentences("This is sentence #1. This is Sentence #2");

       System.out.println( s[0] );  // Should be the first sentence

       System.out.println( s[1] );  // Should be the second sentence

    }

下图显示了我的项目的层次结构(抱歉这张图片我使用 Ubuntu，但我不知道这里是否使用了打印屏幕按钮):

整个错误是:

`Exception in thread "main" java.lang.IllegalArgumentException: in must not be null!
at opennlp.tools.util.model.BaseModel.<init>(BaseModel.java:179)
at opennlp.tools.sentdetect.SentenceModel.<init>(SentenceModel.java:95)
at SentenceDetect.init(SentenceDetect.java:36)
at Main.main(Main.java:10)`

我尝试了这些路径，但遇到了同样的错误:

• /Tokenizer/models/en-sent.bin
• /models/en-sent.bin
• models/en-sent.bin
• /home/suri/workspace/2/Tokenizer/models/en-sent.bin

Answer 1

您需要将路径更改为

 .getResourceAsStream("en-sent.bin");

由于 getResourceAsStream 读取了一个包，并且这些文件 (.bin) 位于您的源文件夹中。