Java 使用blob对H5视频播放进行加密《java视频加密》 Java 使用blob对H5视频播放进行加密《java视频加密》

1.创建一个H5 <video>标签

<video id="sound" type="video/mp4" controls="controls" autoplay="autoplay"
webkit-playsinline="true"
playsinline="true"
heigth="100%"></video>

 

2.创建请求获取视频源，并将视频源转为blob对象

//创建XMLHttpRequest对象
var xhr = new XMLHttpRequest();
//配置请求方式、请求地址以及是否同步
xhr.open('POST', '/armystudy/blob/getVideoSrc', true);
//设置请求结果类型为blob
xhr.responseType = 'blob';
//请求成功回调函数
xhr.onload = function(e) {
if (this.status == 200) {//请求成功
//获取blob对象
var blob = this.response;
//获取blob对象地址，并把值赋给容器
$("#sound").attr("src", URL.createObjectURL(blob));
}
};
xhr.send();

 

3.Java后台将视频转为视频源(本地视频)

@ResponseBody
@RequestMapping("/getVideoSrc")
public OutputStream getVideoSrc(HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse){
//1.创建文件对象
File f = new File("E:/test/1.mp4");
//2.获取文件名称
String fileName = f.getName();
//3.导出文件
String agent = httpServletRequest.getHeader("User-Agent").toUpperCase();
InputStream fis = null;
OutputStream os = null;
try {
//4.获取输入流
fis = new BufferedInputStream(new FileInputStream(f.getPath()));
byte[] buffer;
buffer = new byte[fis.available()];
fis.read(buffer);
httpServletResponse.reset();
//5.由于火狐和其他浏览器显示名称的方式不相同，需要进行不同的编码处理
if(agent.indexOf("FIREFOX") != -1){//火狐浏览器
httpServletResponse.addHeader("Content-Disposition", "attachment;filename="+ new String(fileName.getBytes("GB2312"),"ISO-8859-1"));
}else{//其他浏览器
httpServletResponse.addHeader("Content-Disposition", "attachment;filename="+ URLEncoder.encode(fileName, "UTF-8"));
}
//6.设置response编码
httpServletResponse.setCharacterEncoding("UTF-8");
httpServletResponse.addHeader("Content-Length", "" + f.length());
//设置输出文件类型
httpServletResponse.setContentType("video/mpeg4");
//7.获取response输出流
os = httpServletResponse.getOutputStream();
os.flush();
//8.输出文件

os.write(buffer);
}catch(Exception e){
System.out.println(e.getMessage());
} finally{
//关闭流
try {
if(fis != null){ fis.close(); }
if(os != null){ os.flush(); }
if(os != null){os.close(); }
} catch (IOException e) {
System.out.println(e.getMessage());
}
}
return os;
}

 4.Java后台将视频转为视频源(网络视频)

@RequestMapping("/getVideoBlob_V2")
public OutputStream getVideoBlob_V2(HttpServletRequest httpServletRequest,
HttpServletResponse httpServletResponse) {
String httpUrl = "http://alivideo.g2s.cn/zhs_yanfa_150820/ablecommons/demo/201802/6b79b99f40b14722af5cc90eeb517af6.mp4";
// 1.下载网络文件
URL url = null;
try {
url = new URL(httpUrl);
} catch (MalformedURLException e1) {
e1.printStackTrace();
}
InputStream inStream = null;
OutputStream outputStream = null;
try {
//2.获取链接
URLConnection conn = url.openConnection();
//3.输入流
inStream = conn.getInputStream();
httpServletResponse.reset();
httpServletResponse.addHeader("Content-Disposition", "attachment;filename=" + httpUrl);
//6.设置response编码
httpServletResponse.setCharacterEncoding("UTF-8");
httpServletResponse.addHeader("Content-Length", "" + 47514017);
//设置输出文件类型
httpServletResponse.setContentType("video/mpeg4");
//7.获取response输出流
outputStream = httpServletResponse.getOutputStream();
int byteRead;
while ((byteRead = inStream.read()) != -1) {
outputStream.write(byteRead);
}
} catch (IOException e) {
e.printStackTrace();
System.out.println(e);
} finally {
try {
inStream.close();
outputStream.close();
} catch (IOException e) {
e.printStackTrace();
}
}
return outputStream;
}