uni-app 有没有分片上传视频大文件的插件

在uni-app中，虽然没有官方直接提供的分片上传视频大文件的插件，但你可以通过自定义实现分片上传的功能。以下是一个简单的示例代码，展示如何在uni-app中实现视频文件的分片上传。

首先，确保你已经安装并配置好了uni-app的开发环境。

前端代码（uni-app）

1. 页面代码（pages/index/index.vue）

<template>
  <view>
    <button @click="chooseVideo">选择视频</button>
    <progress :percent="uploadProgress" v-if="uploadProgress > 0" />
  </view>
</template>

<script>
export default {
  data() {
    return {
      uploadProgress: 0,
      videoFile: null,
      chunkSize: 5 * 1024 * 1024, // 5MB per chunk
      uploadUrl: 'https://your-server.com/upload' // Replace with your server upload URL
    };
  },
  methods: {
    chooseVideo() {
      uni.chooseVideo({
        success: (res) => {
          this.videoFile = res.tempFilePath;
          this.uploadVideo();
        }
      });
    },
    uploadVideo() {
      const fileSize = uni.getFileSystemManager().getFileSizeSync(this.videoFile);
      const chunks = Math.ceil(fileSize / this.chunkSize);

      for (let i = 0; i < chunks; i++) {
        const start = i * this.chunkSize;
        const end = Math.min(start + this.chunkSize, fileSize);
        this.uploadChunk(this.videoFile, start, end, chunks, i + 1);
      }
    },
    uploadChunk(filePath, start, end, totalChunks, currentChunk) {
      uni.getFileSystemManager().readFile({
        filePath,
        position: start,
        length: end - start,
        encoding: 'binary',
        success: (res) => {
          const chunk = res.data;
          // Send chunk to server (you need to implement this part)
          // Example: this.sendChunkToServer(chunk, totalChunks, currentChunk);
        },
        fail: (err) => {
          console.error('Read file failed:', err);
        }
      });
    },
    // sendChunkToServer(chunk, totalChunks, currentChunk) {
    //   // Implement your server upload logic here
    // }
  }
};
</script>

后端代码（示例）

后端代码将依赖于你使用的服务器语言和框架。这里提供一个简单的Node.js + Express示例，用于接收分片并重组文件。

const express = require('express');
const multer = require('multer');
const fs = require('fs');
const path = require('path');

const app = express();
const upload = multer({ dest: 'uploads/' });

app.post('/upload', upload.single('chunk'), (req, res) => {
  const { totalChunks, currentChunk } = req.body;
  const filePath = req.file.path;
  const destPath = path.join(__dirname, 'uploads', 'video.tmp');

  fs.appendFileSync(destPath, fs.readFileSync(filePath));

  if (parseInt(currentChunk) === parseInt(totalChunks)) {
    fs.renameSync(destPath, path.join(__dirname, 'uploads', 'uploaded_video.mp4'));
  }

  fs.unlinkSync(filePath); // Delete temporary chunk file
  res.send('Chunk uploaded');
});

app.listen(3000, () => {
  console.log('Server started on port 3000');
});

注意：上述代码仅为示例，实际项目中需要处理更多的错误情况，如网络中断、分片丢失等。同时，服务器端的文件存储路径和上传逻辑也需要根据你的实际需求进行调整。