ClassNotFoundException在FreeTTS Java程序中的应用

Question

我是FreeTTS的新手，这是我的第一个program.The，下面的程序只是读取一个传递的字符串。

我使用Linux 32位，如果我一天前在我的windows机器上提取jsapi.jar的话，我相信这不重要。

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

我怎能不接受这份礼物呢？

PS

我增加了所有4个档案，如en_us.jar，freetts-jsapi10.jar，jsapi.jar，mbrola.jar

Answer 1

1)找到这个类通常定义在哪个jar中：

com.sun.speech.freetts.ValidationException

2)看看你有没有罐子

3)看看你是否有这个罐子的正确版本

(打开它，看看类文件是否在那里)

4)查看jar在运行时是否在类路径中