I am new to java opennlp and i am trying to implement a program that extracts city names from a file but i am testing my code on a string first and i get some errors the code is
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import main.java.opennlp.tools.namefind.NameFinderME;
import main.java.opennlp.tools.namefind.TokenNameFinderModel;
import main.java.opennlp.tools.util.InvalidFormatException;
import main.java.opennlp.tools.util.Span;
import opennlp.tools.tokenize.Tokenizer;
import opennlp.tools.tokenize.TokenizerME;
import opennlp.tools.tokenize.TokenizerModel;
import opennlp.tools.tokenize.SimpleTokenizer;
import opennlp.tools.sentdetect.SentenceDetectorME;
import opennlp.tools.sentdetect.SentenceModel;
import org.xml.sax.SAXException;
public class CityFinder {
public String Tokens[];
public static void main(String[] args) throws IOException, SAXException {
CityFinder toi = new CityFinder();
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); // <-- Here is the Error
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); // <-- Here is the Error
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();
}
}
}
I have errors with the following line
Span sp[] = nf.find(cnt);
the error is
Type mismatch: cannot convert from opennlp.tools.util.Span[] to main.java.opennlp.tools.util.Span[]
I don't know how to solve it in both locations
Any suggestions....?? thanks in advance
Why do you have imports of main.java.opennlp.*? Are those your classes, or do you have two separate copies of the dependency in two different places? There is something wrong with the way your project is set up.
I only changed your imports and works fine:
import opennlp.tools.namefind.NameFinderME; // I've
import opennlp.tools.namefind.TokenNameFinderModel; // changed
import opennlp.tools.util.Span; // only these
import opennlp.tools.util.InvalidFormatException; // lines
OpenNLP version is 1.5.3
来源：https://stackoverflow.com/questions/23618059/span-class-in-opennlp-is-not-working