1. 内网环境 windows系统 选择jacob技术实现 免费的

从官网下载最新1.20jar包和dll文件

 将jar包放到maven仓库中 

dll文件放到jdk的bin目录下

项目代码：

package com.example.ybxm.controller;

import com.jacob.activeX.ActiveXComponent;
import com.jacob.com.Dispatch;
import com.jacob.com.Variant;

import javax.servlet.http.HttpServletResponse;
import java.io.*;
import java.util.Objects;
import java.util.UUID;
import java.io.IOException;

import static org.aspectj.weaver.tools.cache.SimpleCacheFactory.path;

/**
 * 离线 本地  语音朗读
 */
public class VoiceReading {

    //输入文本内容，生成文件地址 text为输入的文本信息
    public static void audioFile(String text){
        try {

            //jacob.dll没成功安装，执行这一步会出错
            //构建音频格式 调用注册表应用
            Dispatch spAudioFormat = new ActiveXComponent("Sapi.SpAudioFormat").getObject();
            //音频文件输出流
            Dispatch spFileStream = new ActiveXComponent("Sapi.SpFileStream").getObject();
            //构建音频对象
            Dispatch spVoice =  new ActiveXComponent("Sapi.SpVoice").getObject();
//            Dispatch spObjectToken = Dispatch.call(spVoice, "GetVoices").toDispatch();
//            Dispatch voice = Dispatch.call(spObjectToken, "Item", new Variant(0)).toDispatch();

            //设置spAudioFormat音频流格式类型22
            Dispatch.put(spAudioFormat, "Type", new Variant(0));
            //设置spFileStream文件输出流的音频格式
            Dispatch.putRef(spFileStream, "Format", spAudioFormat);
//            Dispatch.put(spVoice, "Voice", voice);

            //设置spFileStream文件输出流参数地址等
            Dispatch.call(spFileStream, "Open", new Variant("D:\\java\\景天\\自助拿号打印服务\\text\\48641486.wav"), new Variant(3), new Variant(true));
            //设置spVoice声音对象的音频输出流为输出文件对象
            Dispatch.putRef(spVoice, "AudioOutputStream", spFileStream);
            //设置spVoice声音对象的音量大小100
            Dispatch.put(spVoice, "Volume", new Variant(100));
            //设置spVoice声音对象的速度 0为正常速度，范围【..-2 -1 0 1 2..】
            Dispatch.put(spVoice, "Rate", new Variant(0));
            //设置spVoice声音对象中的文本内容
            Dispatch.call(spVoice, "Speak", new Variant(text));
            //关闭spFileStream输出文件
            Dispatch.call(spFileStream, "Close");

            //释放资源
            spVoice.safeRelease();
            spAudioFormat.safeRelease();
            spFileStream.safeRelease();
        }catch (Exception e){
            System.out.println(e.getMessage());
        }

    }



}