From d8a45e9dc60bbe87286b9773fd46b8eae5441ea5 Mon Sep 17 00:00:00 2001
From: Administrator <15274802129@163.com>
Date: Wed, 14 Jan 2026 14:47:34 +0800
Subject: [PATCH] perf(video): 优化视频播放功能的性能和稳定性
---
src/main/java/cc/mrbird/febs/ai/controller/productPoint/ApiProductPointController.java | 252 +++++++++++++++++++++++++++++++++++++++++++++++++-
1 files changed, 247 insertions(+), 5 deletions(-)
diff --git a/src/main/java/cc/mrbird/febs/ai/controller/productPoint/ApiProductPointController.java b/src/main/java/cc/mrbird/febs/ai/controller/productPoint/ApiProductPointController.java
index 88ab37e..838615e 100644
--- a/src/main/java/cc/mrbird/febs/ai/controller/productPoint/ApiProductPointController.java
+++ b/src/main/java/cc/mrbird/febs/ai/controller/productPoint/ApiProductPointController.java
@@ -1,22 +1,37 @@
package cc.mrbird.febs.ai.controller.productPoint;
+import cc.mrbird.febs.ai.req.memberTalkStream.ApiMemberTalkReloadStreamDto;
import cc.mrbird.febs.ai.req.product.ApiProductInfoDto;
+import cc.mrbird.febs.ai.req.product.ApiProductPageDto;
import cc.mrbird.febs.ai.req.productPoint.ApiProductPointInfoDto;
+import cc.mrbird.febs.ai.req.productPoint.ApiProductPointPageDto;
+import cc.mrbird.febs.ai.req.productPoint.ApiProductPointRecommendDto;
import cc.mrbird.febs.ai.res.product.ApiProductInfoVo;
+import cc.mrbird.febs.ai.res.product.ApiProductVo;
import cc.mrbird.febs.ai.res.productPoint.ApiProductPointInfoVo;
+import cc.mrbird.febs.ai.res.productPoint.ApiProductPointListVo;
+import cc.mrbird.febs.ai.res.productPoint.ApiProductPointRecommendVo;
import cc.mrbird.febs.ai.service.AiProductPointService;
import cc.mrbird.febs.common.entity.FebsResponse;
+import cc.mrbird.febs.common.utils.LoginUserUtil;
import io.swagger.annotations.Api;
import io.swagger.annotations.ApiOperation;
import io.swagger.annotations.ApiResponse;
import io.swagger.annotations.ApiResponses;
import lombok.RequiredArgsConstructor;
import lombok.extern.slf4j.Slf4j;
+import org.springframework.http.HttpStatus;
import org.springframework.validation.annotation.Validated;
-import org.springframework.web.bind.annotation.PostMapping;
-import org.springframework.web.bind.annotation.RequestBody;
-import org.springframework.web.bind.annotation.RequestMapping;
-import org.springframework.web.bind.annotation.RestController;
+import org.springframework.web.bind.annotation.*;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.InputStream;
+import java.io.OutputStream;
+import java.io.RandomAccessFile;
+import java.nio.file.Files;
+import java.nio.file.Path;
+import java.nio.file.Paths;
/**
* @author Administrator
@@ -26,10 +41,20 @@
@RestController
@RequiredArgsConstructor
@RequestMapping(value = "/api/ai/productPoint")
-@Api(value = "ApiProductPointController", tags = "AI-产品知识点")
+@Api(value = "ApiProductPointController", tags = "AI-知识点(学习)")
public class ApiProductPointController {
private final AiProductPointService aiProductPointService;
+
+ @ApiOperation(value = "知识点列表", notes = "知识点列表")
+ @ApiResponses({
+ @ApiResponse(code = 200, message = "success", response = ApiProductPointListVo.class)
+ })
+ @PostMapping(value = "/list")
+ public FebsResponse list(@RequestBody @Validated ApiProductPointPageDto dto) {
+
+ return aiProductPointService.productPointList(dto);
+ }
@ApiOperation(value = "知识点详情", notes = "知识点详情")
@ApiResponses({
@@ -41,4 +66,221 @@
return aiProductPointService.productPointInfo(dto);
}
+
+ @ApiOperation(value = "推荐", notes = "推荐")
+ @ApiResponses({
+ @ApiResponse(code = 200, message = "success", response = ApiProductPointRecommendVo.class)
+ })
+ @PostMapping(value = "/recommend")
+ public FebsResponse recommend(@RequestBody @Validated ApiProductPointRecommendDto dto) {
+
+ return aiProductPointService.recommend(dto);
+ }
+
+
+ public static final String baseUploadDir = "/home/javaweb/webresource/ai/file";
+
+ @GetMapping("/play/{fileName}")
+ public void playVideo(@PathVariable("fileName") String fileName, HttpServletRequest request, HttpServletResponse response) {
+ log.info("开始播放视频文件: {}", fileName);
+
+ // 配置参数
+ final int BUFFER_SIZE = 1024 * 1024; // 1MB缓冲区，提高I/O性能
+ final long MAX_INITIAL_SEGMENT = 1024 * 1024 * 15; // 最大初始片段大小（15MB），约30秒中等码率视频
+
+ try {
+ String companyId = LoginUserUtil.getLoginUser().getCompanyId();
+ String uploadDir = baseUploadDir + "/" + companyId;
+ Path filePath = Paths.get(uploadDir, fileName);
+
+ // 检查文件是否存在
+ if (!Files.exists(filePath)) {
+ log.warn("视频文件不存在: {}", filePath);
+ response.setStatus(HttpStatus.NOT_FOUND.value());
+ return;
+ }
+
+ // 检查文件是否为常规文件
+ if (!Files.isRegularFile(filePath)) {
+ log.warn("路径不是常规文件: {}", filePath);
+ response.setStatus(HttpStatus.BAD_REQUEST.value());
+ return;
+ }
+
+ // 获取文件大小
+ long fileSize = Files.size(filePath);
+ log.debug("视频文件大小: {} bytes", fileSize);
+
+ // 检查是否有Range请求头
+ String rangeHeader = request.getHeader("Range");
+ if (rangeHeader != null) {
+ log.debug("收到Range请求: {}", rangeHeader);
+ // 解析Range头，格式为"bytes=start-end"
+ String[] ranges = rangeHeader.replace("bytes=", "").split("-");
+ long start = 0, end = fileSize - 1;
+
+ try {
+ if (!ranges[0].isEmpty()) {
+ start = Long.parseLong(ranges[0]);
+ }
+ if (ranges.length > 1 && !ranges[1].isEmpty()) {
+ end = Long.parseLong(ranges[1]);
+ } else {
+ // 如果没有指定结束位置，返回从开始位置到文件末尾的内容
+ // 但限制最大长度，避免一次性传输过大的内容
+ end = Math.min(start + BUFFER_SIZE * 10, fileSize - 1);
+ }
+ } catch (NumberFormatException e) {
+ log.error("无效的Range头格式: {}", rangeHeader, e);
+ response.setStatus(HttpStatus.BAD_REQUEST.value());
+ return;
+ }
+
+ // 确保范围有效
+ if (start > end || start >= fileSize) {
+ log.warn("无效的Range范围: {}-{}，文件大小: {}", start, end, fileSize);
+ response.setStatus(HttpStatus.REQUESTED_RANGE_NOT_SATISFIABLE.value());
+ response.setHeader("Content-Range", "bytes */" + fileSize);
+ return;
+ }
+
+ // 限制结束位置不超过文件大小
+ if (end >= fileSize) {
+ end = fileSize - 1;
+ }
+
+ // 计算内容长度
+ long contentLength = end - start + 1;
+ log.debug("处理Range请求: {}-{}，长度: {}", start, end, contentLength);
+
+ // 设置响应状态和头部信息
+ response.setStatus(HttpStatus.PARTIAL_CONTENT.value());
+ response.setContentType(getContentTypeByExtension(fileName));
+ response.setContentLengthLong(contentLength);
+ response.setHeader("Content-Range", "bytes " + start + "-" + end + "/" + fileSize);
+ response.setHeader("Accept-Ranges", "bytes");
+ response.setHeader("Content-Disposition", "inline; filename=\"" + fileName + "\"");
+ response.setHeader("Cache-Control", "public, max-age=3600"); // 添加缓存控制
+
+ // 使用NIO提高读取性能
+ try (RandomAccessFile randomAccessFile = new RandomAccessFile(filePath.toFile(), "r");
+ OutputStream outputStream = response.getOutputStream()) {
+
+ randomAccessFile.seek(start);
+ byte[] buffer = new byte[BUFFER_SIZE];
+ long remaining = contentLength;
+ int bytesRead;
+
+ while (remaining > 0 && (bytesRead = randomAccessFile.read(buffer, 0, (int) Math.min(buffer.length, remaining))) != -1) {
+ outputStream.write(buffer, 0, bytesRead);
+ remaining -= bytesRead;
+
+ // 定期刷新输出流，避免缓冲区溢出
+ if (remaining % (BUFFER_SIZE * 4) == 0) {
+ outputStream.flush();
+ }
+ }
+
+ // 确保所有数据都被写入
+ outputStream.flush();
+ log.debug("Range请求处理完成: {}-{}", start, end);
+ }
+ } else {
+ log.debug("收到完整文件请求，返回初始片段");
+
+ // 没有Range头，返回文件大小的10分之一和15MB中较小的那个
+ long oneTenthSize = fileSize / 10;
+ // 计算10分之一和15MB的较小值
+ long maxInitialSize = Math.min(oneTenthSize, MAX_INITIAL_SEGMENT);
+ // 确保至少返回1字节，且不超过文件大小
+ long actualEnd = Math.min(Math.max(maxInitialSize, 1), fileSize - 1);
+ log.debug("返回初始片段: {} bytes (10分之一大小: {} bytes, 15MB限制: {} bytes, 文件总大小: {} bytes)",
+ actualEnd + 1, oneTenthSize, MAX_INITIAL_SEGMENT, fileSize);
+
+ // 设置响应状态和头部信息
+ response.setStatus(HttpStatus.PARTIAL_CONTENT.value()); // 使用206状态码，因为只返回部分内容
+ response.setContentType(getContentTypeByExtension(fileName));
+ response.setContentLengthLong(actualEnd + 1);
+ response.setHeader("Content-Range", "bytes 0-" + actualEnd + "/" + fileSize);
+ response.setHeader("Accept-Ranges", "bytes");
+ response.setHeader("Content-Disposition", "inline; filename=\"" + fileName + "\"");
+ response.setHeader("Cache-Control", "public, max-age=3600"); // 添加缓存控制
+
+ // 流式传输文件的初始片段
+ try (InputStream inputStream = Files.newInputStream(filePath);
+ OutputStream outputStream = response.getOutputStream()) {
+ byte[] buffer = new byte[BUFFER_SIZE];
+ long written = 0;
+ int bytesRead;
+
+ while (written <= actualEnd && (bytesRead = inputStream.read(buffer)) != -1) {
+ long toWrite = Math.min(bytesRead, actualEnd + 1 - written);
+ outputStream.write(buffer, 0, (int)toWrite);
+ written += toWrite;
+
+ // 定期刷新输出流
+ if (written % (BUFFER_SIZE * 4) == 0) {
+ outputStream.flush();
+ }
+
+ // 如果已经写完初始片段，则停止
+ if (written > actualEnd) {
+ break;
+ }
+ }
+
+ // 确保所有数据都被写入
+ outputStream.flush();
+ log.debug("初始片段传输完成，大小: {} bytes", written);
+ }
+ }
+ } catch (Exception e) {
+ log.error("播放视频文件时发生错误: {}", fileName, e);
+ try {
+ // 确保响应状态被设置
+ if (!response.isCommitted()) {
+ response.setStatus(HttpStatus.INTERNAL_SERVER_ERROR.value());
+ }
+ } catch (Exception ex) {
+ log.error("设置响应状态时发生错误", ex);
+ }
+ } finally {
+ log.info("视频播放请求处理完成: {}", fileName);
+ }
+ }
+
+ /**
+ * 根据文件扩展名获取MIME类型
+ */
+ private String getContentTypeByExtension(String fileName) {
+ String extension = "";
+ int lastDotIndex = fileName.lastIndexOf('.');
+ if (lastDotIndex > 0) {
+ extension = fileName.substring(lastDotIndex).toLowerCase();
+ }
+
+ switch (extension) {
+ case ".mp4":
+ return "video/mp4";
+ case ".avi":
+ return "video/x-msvideo";
+ case ".mov":
+ return "video/quicktime";
+ case ".wmv":
+ return "video/x-ms-wmv";
+ case ".flv":
+ return "video/x-flv";
+ case ".webm":
+ return "video/webm";
+ case ".mkv":
+ return "video/x-matroska";
+ case ".m3u8":
+ return "application/vnd.apple.mpegurl";
+ case ".ts":
+ return "video/MP2T";
+ default:
+ return "application/octet-stream";
+ }
+ }
+
}
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