java - FreeTTS Java 程序中的 ClassNotFoundException

Question

我是 FreeTTS 新手，这是我的第一个程序。以下程序只是读出传递的字符串。

如果这很重要的话，我正在使用 Linux Mint 32 位。但是我一天前在我的 Windows 计算机上提取了 jsapi.jar。我相信这并不重要。

import javax.speech.*;
import java.util.*;
import javax.speech.synthesis.*;

public class Speak
{
    String speaktext;

    public void dospeak(String speak,String  voicename)
    {
        speaktext=speak;
        String voiceName =voicename;
        try
        {
            SynthesizerModeDesc desc = new SynthesizerModeDesc(null,"general",  Locale.US,null,null);
            Synthesizer synthesizer =  Central.createSynthesizer(desc);
            synthesizer.allocate();
            synthesizer.resume();
            desc = (SynthesizerModeDesc)  synthesizer.getEngineModeDesc();
            Voice[] voices = desc.getVoices();
            Voice voice = null;
            for (int i = 0; i < voices.length; i++)
            {
                if (voices[i].getName().equals(voiceName))
                {
                    voice = voices[i];
                    break;
                }
            }
            synthesizer.getSynthesizerProperties().setVoice(voice);
            System.out.print("Speaking : "+speaktext);
            synthesizer.speakPlainText(speaktext, null);
            synthesizer.waitEngineState(Synthesizer.QUEUE_EMPTY);
            synthesizer.deallocate();
        }
        catch (Exception e)
        {
            String message = " missing speech.properties in " + System.getProperty("user.home") + "\n";
            System.out.println(""+e);
            System.out.println(message);
        }
    }

    public static void main(String[] args)
    {
        Speak obj=new Speak();
        obj.dospeak("Finally It speaks and speaks and  speaks","kevin16");
    }
}

我收到这个作为礼物。

Exception in thread "main" java.lang.NoClassDefFoundError: com/sun/speech/freetts/ValidationException
    at java.lang.Class.forName0(Native Method)
    at java.lang.Class.forName(Class.java:190)
    at javax.speech.Central.registerEngineCentral(Central.java:703)
    at javax.speech.Central.loadProps(Central.java:775)
    at javax.speech.Central.availableSynthesizers(Central.java:651)
    at javax.speech.Central.createSynthesizer(Central.java:553)
    at Speak.dospeak(Speak.java:16)
    at Speak.main(Speak.java:47)
Caused by: java.lang.ClassNotFoundException: com.sun.speech.freetts.ValidationException
    at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:425)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:358)
    ... 8 more

我该怎么做才能不接受这份礼物。

PS

我已经添加了所有 4 个存档，即 en_us.jar、freetts-jsapi10.jar、jsapi.jar、mbrola .jar

Answer 1

1) 查找该类通常定义在哪个 jar 中:
com.sun.speech.freetts.ValidationException

2)看看你是否有 jar

3) 看看你是否有这个 jar 的正确版本
(打开看看有没有class文件)

4)运行时查看jar是否在类路径中