Java 为什么在EclipseIDE中不能识别OpenNLP包？

我尝试使用ApacheOpenNLP从文件中获取城市名称，但我尝试首先在单个字符串上使用该库。我使用Eclipse Kepler安装了Maven和OpenNLP，但当我尝试运行该应用程序时，它给了我一系列错误：

import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import org.xml.sax.SAXException;

public class CityNames {

public String Tokens[];
public static void main(String[] args) throws IOException, SAXException{

    CityNames toi = new CityNames();
    String cnt;
    cnt="John is planning to specialize in Electrical Engineering in UC Berkley and pursue a career with IBM.";
    toi.tokenization(cnt);
    String cities = toi.namefind(toi.Tokens);
    String org = toi.orgfind(toi.Tokens);
    System.out.println("City name is : "+cities);
    System.out.println("organization name is: "+org);

}
    public String namefind(String cnt[]) {
    InputStream is;
    TokenNameFinderModel tnf;
    NameFinderME nf;
    String sd = "";
    try {
        is = new FileInputStream("en-ner-location.bin");
        tnf = new TokenNameFinderModel(is);
        nf = new NameFinderME(tnf);

        Span sp[] = nf.find(cnt);

        String a[] = Span.spansToStrings(sp, cnt);
        StringBuilder fd = new StringBuilder();
        int l = a.length;

        for (int j = 0; j < l; j++) {
            fd = fd.append(a[j] + "\n");

        }
        sd = fd.toString();

    } catch (FileNotFoundException e) {

        e.printStackTrace();
    } catch (InvalidFormatException e) {

        e.printStackTrace();
    } catch (IOException e) {

        e.printStackTrace();
    }
    return sd;
}

public String orgfind(String cnt[]) {
    InputStream is;
    TokenNameFinderModel tnf;
    NameFinderME nf;
    String sd = "";
    try {
        is = new FileInputStream("en-ner-organization.bin");
        tnf = new TokenNameFinderModel(is);
        nf = new NameFinderME(tnf);
        Span sp[] = nf.find(cnt);
        String a[] = Span.spansToStrings(sp, cnt);
        StringBuilder fd = new StringBuilder();
        int l = a.length;
        for (int j = 0; j < l; j++) {
            fd = fd.append(a[j] + "\n");

        }

        sd = fd.toString();

    } catch (FileNotFoundException e) {

        e.printStackTrace();
    } catch (InvalidFormatException e) {

        e.printStackTrace();
    } catch (IOException e) {

        e.printStackTrace();
    }
    return sd;
}
public void tokenization(String tokens) {
    InputStream is;
    TokenizerModel tm;
    try {
        is = new FileInputStream("en-token.bin");
        tm = new TokenizerModel(is);
        Tokenizer tz = new TokenizerME(tm);
        Tokens = tz.tokenize(tokens);
        // System.out.println(Tokens[1]);
    } catch (IOException e) {
        e.printStackTrace();
    }
}

}

基于pom.xml文件，看起来您已经拥有了所需的一切

如果您使用的是Eclipse，您应该能够按

Ctrl+Shift+O

，这将组织您的导入语句并引入您当前缺少的语句（即

TokenNameFinderModel

类和其他OpenNLP类）

完成后，这些导入语句应显示在类的顶部：

import opennlp.tools.namefind.NameFinderME;
import opennlp.tools.namefind.TokenNameFinderModel;
import opennlp.tools.tokenize.Tokenizer;
import opennlp.tools.tokenize.TokenizerME;
import opennlp.tools.tokenize.TokenizerModel;
import opennlp.tools.util.InvalidFormatException;
import opennlp.tools.util.Span;

---

如果您将错误堆栈跟踪的相关摘录，甚至pom文件的相关摘录，效果会更好。我使用与您相同的配置，它工作正常。抱歉，我对这一点非常陌生…不明白您在说什么我刚刚发布了pom.xml文件pom似乎还可以。另一方面，java文件没有定义所需的导入。我没有看到任何与OpenNLP相关的导入行（在开头）。

import opennlp.tools.namefind.NameFinderME;
import opennlp.tools.namefind.TokenNameFinderModel;
import opennlp.tools.tokenize.Tokenizer;
import opennlp.tools.tokenize.TokenizerME;
import opennlp.tools.tokenize.TokenizerModel;
import opennlp.tools.util.InvalidFormatException;
import opennlp.tools.util.Span;