断点续传（springMvc），可支持html5在线播放代码,Java代码库,德仔网

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【Java】断点续传（springMvc），可支持html5在线播放
作者:筱雨 / 发布于2017/8/29/ 482
@RequestMapping(value="/player/**/*.wav",method=RequestMethod.GET)

public void player2(HttpServletRequest request,HttpServletResponse response){
String path  = request.getServletPath();
path = path.replaceAll("/crm/player", "");
String recordPath = "";
if(path.contains("ivr")){
  recordPath = System.getProperty("app");
}else{
  recordPath=ConfigFactory.getString(CommonConstants.RECORD_PATH); //硬盘存放路径
}
   path = recordPath+path;
BufferedInputStream bis = null;
   try {
       File file = new File(path);
       if (file.exists()) {
           long p = 0L;
           long toLength = 0L;
           long contentLength = 0L;
           int rangeSwitch = 0; // 0,从头开始的全文下载；1,从某字节开始的下载（bytes=27000-）；2,从某字节开始到某字节结束的下载（bytes=27000-39000）
           long fileLength;
           String rangBytes = "";
           fileLength = file.length();
 
           // get file content
           InputStream ins = new FileInputStream(file);
           bis = new BufferedInputStream(ins);
 
           // tell the client to allow accept-ranges
           response.reset();
           response.setHeader("Accept-Ranges", "bytes");
 
           // client requests a file block download start byte
           String range = request.getHeader("Range");
           if (range != null && range.trim().length() > 0 && !"null".equals(range)) {
               response.setStatus(javax.servlet.http.HttpServletResponse.SC_PARTIAL_CONTENT);
               rangBytes = range.replaceAll("bytes=", "");
               if (rangBytes.endsWith("-")) {  // bytes=270000-
                   rangeSwitch = 1;
                   p = Long.parseLong(rangBytes.substring(0, rangBytes.indexOf("-")));
                   contentLength = fileLength - p;  // 客户端请求的是270000之后的字节（包括bytes下标索引为270000的字节）
               } else { // bytes=270000-320000
                   rangeSwitch = 2;
                   String temp1 = rangBytes.substring(0, rangBytes.indexOf("-"));
                   String temp2 = rangBytes.substring(rangBytes.indexOf("-") + 1, rangBytes.length());
                   p = Long.parseLong(temp1);
                   toLength = Long.parseLong(temp2);
                   contentLength = toLength - p + 1; // 客户端请求的是 270000-320000 之间的字节
               }
           } else {
               contentLength = fileLength;
           }
 
           // 如果设设置了Content-Length，则客户端会自动进行多线程下载。如果不希望支持多线程，则不要设置这个参数。
           // Content-Length: [文件的总大小] - [客户端请求的下载的文件块的开始字节]
           response.setHeader("Content-Length", new Long(contentLength).toString());
 
           // 断点开始
           // 响应的格式是:
           // Content-Range: bytes [文件块的开始字节]-[文件的总大小 - 1]/[文件的总大小]
           if (rangeSwitch == 1) {
               String contentRange = new StringBuffer("bytes ").append(new Long(p).toString()).append("-")
                       .append(new Long(fileLength - 1).toString()).append("/")
                       .append(new Long(fileLength).toString()).toString();
               response.setHeader("Content-Range", contentRange);
               bis.skip(p);
           } else if (rangeSwitch == 2) {
               String contentRange = range.replace("=", " ") + "/" + new Long(fileLength).toString();
               response.setHeader("Content-Range", contentRange);
               bis.skip(p);
           } else {
               String contentRange = new StringBuffer("bytes ").append("0-")
                       .append(fileLength - 1).append("/")
                       .append(fileLength).toString();
               response.setHeader("Content-Range", contentRange);
           }
 
           String fileName = file.getName();
           response.setContentType("application/octet-stream");
           response.addHeader("Content-Disposition", "attachment;filename=" + fileName);
 
           OutputStream out = response.getOutputStream();
           int n = 0;
           long readLength = 0;
           int bsize = 1024;
           byte[] bytes = new byte[bsize];
           if (rangeSwitch == 2) {
               // 针对 bytes=27000-39000 的请求，从27000开始写数据                    
               while (readLength <= contentLength - bsize) {
                   n = bis.read(bytes);
                   readLength += n;
                   out.write(bytes, 0, n);
               }
               if (readLength <= contentLength) {
                   n = bis.read(bytes, 0, (int) (contentLength - readLength));
                   out.write(bytes, 0, n);
               }                   
           } else {
               while ((n = bis.read(bytes)) != -1) {
                   out.write(bytes,0,n);                                                      
               }                   
           }
           out.flush();
           out.close();
           bis.close();
       } else {
           if (logger.isDebugEnabled()) {
               logger.debug("Error: file " + path + " not found.");
           }                
       }
   } catch (IOException ie) {
       // 忽略 ClientAbortException 之类的异常
   } catch (Exception e) {
       logger.error(e.getMessage());
   }
}

jsp code

<audio src='"+path+"' autoplay='autoplay' controls='controls' id='player'></audio>
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