《软件工程》实战— 在线教育平台开发

/**
 * 视频流服务接口
 */
@RestController
@RequestMapping("/video")
public class VideoController {

    @Autowired
    private VideoService videoService;

    /**
     * 获取动态码率视频流
     * @param courseId 课程ID
     * @param quality 清晰度（720P/1080P）
     * @return 视频流响应
     */
    @GetMapping("/stream")
    public ResponseEntity<InputStreamResource> getVideoStream(
        @RequestParam String courseId,
        @RequestParam String quality
    ) throws IOException {
        // 根据网络状态动态切换码率
        String streamUrl = videoService.generateStreamUrl(courseId, quality);
        URL url = new URL(streamUrl);
        HttpURLConnection connection = (HttpURLConnection) url.openConnection();
        
        InputStream inputStream = connection.getInputStream();
        return ResponseEntity.ok()
            .contentType(MediaType.parseMediaType("video/mp4"))
            .body(new InputStreamResource(inputStream));
    }
}

<template>
  <div class="homework-submit">
    <input type="file" accept=".pdf,.zip" @change="handleFileUpload" />
    <button @click="submitHomework">提交作业</button>
  </div>
</template>

<script>
export default {
  methods: {
    handleFileUpload(e) {
      const file = e.target.files[0];
      this.uploadFile(file);
    },
    async uploadFile(file) {
      const formData = new FormData();
      formData.append('file', file);
      
      // 分片上传至MinIO
      await axios.post('/homework/upload', formData, {
        headers: { 'Content-Type': 'multipart/form-data' }
      });
      alert('作业提交成功');
    }
  }
};
</script>

/**
 * 讨论区WebSocket服务
 */
@ServerEndpoint("/discussion")
public class DiscussionWebSocket {

    private static final Set<Session> sessions = Collections.synchronizedSet(new HashSet<>());

    @OnOpen
    public void onOpen(Session session) {
        sessions.add(session);
    }

    @OnMessage
    public void onMessage(String message, Session session) {
        // 广播消息至所有客户端
        sessions.forEach(s -> s.getAsyncRemote().sendText(message));
    }

    @OnClose
    public void onClose(Session session) {
        sessions.remove(session);
    }
}

/**
 * 功能点估算工具类
 */
public class FunctionPointCalculator {
    private static final int[] WEIGHTS = {3, 4, 6}; // 简单/中等/复杂功能点权重

    public static int calculateFunctionPoints(int simple, int medium, int complex) {
        return simple * WEIGHTS[0] + medium * WEIGHTS[1] + complex * WEIGHTS[2];
    }

    public static void main(String[] args) {
        int totalFP = calculateFunctionPoints(10, 8, 5); // 简单功能点10个，中等8个，复杂5个
        System.out.println("总功能点数：" + totalFP); // 输出：10*3+8*4+5*6=30+32+30=92
    }
}

# 模拟500用户并发请求课程接口
jmeter -n -t course_test.jmx -l result.jtl -e -o report

- 项目周期：45天
- 团队规模：5人
- 技术亮点：高并发视频流处理、多端自适应设计、自动化测试覆盖率85%