【html demo】

<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
</head>
<body>
<h1>wav测试
<audio controls="controls">
    <source src="http://localhost:8080/stream/pull/wav" />
</audio>
    <h1>MP3测试
        <audio controls="controls">
            <source src="http://localhost:8080/stream/pull/mp3" />
        </audio>
</body>
</html>

【音频流推送】

package com.zgs.audio.stream;

import org.apache.catalina.connector.ClientAbortException;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import java.io.*;

/**
 * Created by Shmily on 2018/1/3.
 */
@Controller
@RequestMapping("/stream")
public class WavApiController {

    @Value("${data.base}")
    private String database;
    @RequestMapping("/wav/{f}")
    @ResponseBody
    public void wavStream(HttpServletRequest request, HttpServletResponse response, @PathVariable String f){
        //文件目录
        File music = new File(database+f+".wav");
        String range=request.getHeader("Range");

        //开始下载位置
        long startByte = 0;
        //结束下载位置
        long endByte = music.length() - 1;

        //有range的话
        if (range != null && range.contains("bytes=") && range.contains("-")) {
            range = range.substring(range.lastIndexOf("=") + 1).trim();
            String ranges[] = range.split("-");
            try {
                //判断range的类型
                if (ranges.length == 1) {
                    //类型一:bytes=-2343
                    if (range.startsWith("-")) {
                        endByte = Long.parseLong(ranges[0]);
                    }
                    //类型二:bytes=2343-
                    else if (range.endsWith("-")) {
                        startByte = Long.parseLong(ranges[0]);
                    }
                }
                //类型三:bytes=22-2343
                else if (ranges.length == 2) {
                    startByte = Long.parseLong(ranges[0]);
                    endByte = Long.parseLong(ranges[1]);
                }

            } catch (NumberFormatException e) {
                startByte = 0;
                endByte = music.length() - 1;
            }
        }

        //要下载的长度(为啥要加一问小学数学老师去)
        long contentLength = endByte - startByte + 1;
        //文件名
        String fileName = music.getName();
        //文件类型
        String contentType = request.getServletContext().getMimeType(fileName);


        //各种响应头设置
        //参考资料:https://www.ibm.com/developerworks/cn/java/joy-down/index.html
        //坑爹地方一:看代码
        response.setHeader("Accept-Ranges", "bytes");
        //坑爹地方二:http状态码要为206
        response.setStatus(206);
        response.setContentType(contentType);
        response.setHeader("Content-Type", contentType);
        //这里文件名换你想要的,inline表示浏览器直接实用(我方便测试用的)
        //参考资料:http://hw1287789687.iteye.com/blog/2188500
//        response.setHeader("Content-Disposition", "inline;filename=test.mp3");
        response.setHeader("Content-Length", String.valueOf(contentLength));
        //坑爹地方三:Content-Range,格式为
        // [要下载的开始位置]-[结束位置]/[文件总大小]
        response.setHeader("Content-Range", "bytes " + startByte + "-" + endByte + "/" + music.length());


        BufferedOutputStream outputStream = null;
        RandomAccessFile randomAccessFile = null;
        //已传送数据大小
        long transmitted = 0;
        try {
            randomAccessFile = new RandomAccessFile(music, "r");
            outputStream = new BufferedOutputStream(response.getOutputStream());
            byte[] buff = new byte[4096];
            int len = 0;
            randomAccessFile.seek(startByte);
            //坑爹地方四:判断是否到了最后不足4096(buff的length)个byte这个逻辑((transmitted + len) <= contentLength)要放前面!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
            //不然会会先读取randomAccessFile,造成后面读取位置出错,找了一天才发现问题所在
            while ((transmitted + len) <= contentLength && (len = randomAccessFile.read(buff)) != -1) {
                outputStream.write(buff, 0, len);
                transmitted += len;
                //停一下,方便测试,用的时候删了就行了
                Thread.sleep(10);
            }
            //处理不足buff.length部分
            if (transmitted < contentLength) {
                len = randomAccessFile.read(buff, 0, (int) (contentLength - transmitted));
                outputStream.write(buff, 0, len);
                transmitted += len;
            }

            outputStream.flush();
            response.flushBuffer();
            randomAccessFile.close();
            System.out.println("下载完毕:" + startByte + "-" + endByte + ":" + transmitted);

        } catch (ClientAbortException e) {
            System.out.println("用户停止下载:" + startByte + "-" + endByte + ":" + transmitted);
            //捕获此异常表示拥护停止下载
        } catch (IOException e) {
            e.printStackTrace();
        } catch (InterruptedException e) {
            e.printStackTrace();
        } finally {
            try {
                if (randomAccessFile != null) {
                    randomAccessFile.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}

标题:springboot 实现流式传输音频文件
作者:TravelEngineers
地址:https://www.mycitymemory.com/articles/2019/07/21/1563699618551.html
版权声明:转载请注明博文地址,尊重作者劳动成果。
作者简介:坐标魔都,一枚爱旅行爱摄影的攻城狮。愿攻城拔寨的路上,你不用996,也不再孤单,加油。