我想在我的项目中使用语音识别,我找到了这段代码,但是当我运行它时,我得到一个错误:
run: java.lang.NullPointerException at newpackage.HelloWorld.main(HelloWorld.java:55)
请问你们中的一个可以帮我解决这个问题吗?
这是我使用的服务器代码:
package newpackage;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.speech.*;
import javax.speech.recognition.*;
import java.io.FileReader;
import java.util.Locale;
public class HelloWorld extends ResultAdapter {
static Recognizer rec;
// Receives RESULT_ACCEPTED event: print it, clean up, exit
public void resultAccepted(ResultEvent e) {
Result r = (Result)(e.getSource());
ResultToken tokens[] = r.getBestTokens();
for (int i = 0; i < tokens.length; i++)
System.out.print(tokens[i].getSpokenText() + " ");
System.out.println();
try {
// Deallocate the recognizer and exit
rec.deallocate();
} catch (EngineException ex) {
Logger.getLogger(HelloWorld.class.getName()).log(Level.SEVERE, null, ex);
} catch (EngineStateError ex) {
Logger.getLogger(HelloWorld.class.getName()).log(Level.SEVERE, null, ex);
}
System.exit(0);
}
public static void main(String args[]) {
try {
// Create a recognizer that supports English.
rec = Central.createRecognizer(
new EngineModeDesc(Locale.ENGLISH));
// Start up the recognizer
rec.allocate();
// Load the grammar from a file, and enable it
FileReader reader = new FileReader(args[0]);
RuleGrammar gram = rec.loadJSGF(reader);
gram.setEnabled(true);
// Add the listener to get results
rec.addResultListener(new HelloWorld());
// Commit the grammar
rec.commitChanges();
// Request focus and start listening
rec.requestFocus();
rec.resume();
} catch (Exception e) {
e.printStackTrace();
// System.out.println("the problem");
}
}
}