Java dynamically modifies m3u8 address to play

Java dynamically handles m3u8 issues

Raw m3u8 file

#EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:20
#EXT-X-MEDIA-SEQUENCE:0
#EXTINF:20.500000,
00000.ts
#EXTINF:20.266667,
00001.ts
#EXTINF:20.266667,
00002.ts
#EXTINF:9.900000,
00003.ts
#EXT-X-ENDLIST

Modified m3u8 file

#EXTM3U
#EXT-X-VERSION:3
#EXT-X-TARGETDURATION:20
#EXT-X-MEDIA-SEQUENCE:0
#EXTINF:20.500000,
/data/test/00000.ts
#EXTINF:20.266667,
/data/test/00001.ts
#EXTINF:20.266667,
/data/test/00002.ts
#EXTINF:9.900000,
/data/test/00003.ts
#EXT-X-ENDLIST

Java dynamically modifies m3u8 address to play

package com.xxx.xxx.controller;

import lombok.extern.slf4j.Slf4j;
import org.springframework.http.MediaType;
import org.springframework.http.MediaTypeFactory;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RestController;

import javax.servlet.http.HttpServletResponse;
import java.io.BufferedOutputStream;
import java.io.IOException;
import java.io.OutputStream;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Paths;
import java.util.Arrays;
import java.util.Optional;

/**
 * @author HanKeQi
 * @date 2023/3/8
 */
@Slf4j
@RestController
public class TestController {
    
    

    @GetMapping(value = {
    
    "/play/{id}", "/play/{id}/"})
    public void videoPay(@PathVariable("id") Long id, HttpServletResponse response) throws IOException {
    
    
        OutputStream os = new BufferedOutputStream(response.getOutputStream());
        response.setCharacterEncoding("utf-8");
        try {
    
    
            String targetPathM3u8 = "/xxx/xxx.m3u8";
            byte[] targetByte = Files.readAllBytes(Paths.get(targetPathM3u8));
            StringBuffer stringBuffer = new StringBuffer();
            byte[] bytes = new byte[]{
    
    };
            String m3u8Str = new String(targetByte);
            if(!StringUtils.isEmpty(m3u8Str)) {
    
    
                String[] split = m3u8Str.split(System.lineSeparator());
                Arrays.stream(split).forEach(ts -> {
    
    
                    if (stringBuffer.length() != 0) {
    
    
                        stringBuffer.append(System.lineSeparator());
                    }
                    // .ts 文件
                    if (!StringUtils.isEmpty(ts) && ts.endsWith(".ts")) {
    
    
                        String formatBytes = String.format("%s/%s",  "自定义URL", ts);
                        stringBuffer.append(formatBytes);
                        return;
                    }
                    stringBuffer.append(ts);
                });
                bytes = stringBuffer.toString().getBytes(StandardCharsets.UTF_8);
            }
            Optional<MediaType> mediaType = MediaTypeFactory.getMediaType(targetPathM3u8);
            if (mediaType.isPresent()){
    
    
                response.setCharacterEncoding("utf-8");
                response.setContentType(mediaType.get().toString());
                response.setHeader("Accept-Ranges", "bytes");
                os.write(bytes);
            }
        }finally {
    
    
            os = null;
        }
    }
}