最近有客戶反饋云盤本地上傳大文件會(huì)報(bào)錯(cuò)，上傳不了，經(jīng)過(guò)我們排查修復(fù)，下面是解決方案：

1.  修改文件路徑：src\utils\uploadChunk.js，也可以直接下載附件替換一下文件。

2.  修改代碼:

 // 針對(duì)每個(gè)文件進(jìn)行chunk處理
    const readChunkMD5 = async (file, md5, options) => {
      const CHUNK_SIZE = 5 * 1024 * 1024 // 5MB
      const MAX_RETRIES = 3 // 最大重試次數(shù)
      const RETRY_DELAY = 1000 // 重試延遲(ms)

      const chunkCount = Math.ceil(file.size / CHUNK_SIZE)
      const uploadedChunks = [] // 跟蹤已上傳的分片
      let lastProgress = 0 // 跟蹤上次進(jìn)度

      // 進(jìn)度更新函數(shù)
      const updateProgress = (current) => {
        const progress = Math.round((current / chunkCount) * 100)
        if (progress > lastProgress && options?.onProgress) {
          options.onProgress(progress)
          lastProgress = progress
        }
      }

      for (let i = 0; i < chunkCount; i++) {
        let retries = 0
        let success = false

        while (retries < MAX_RETRIES && !success) {
          try {
            const { chunk } = getChunkInfo(file, i, CHUNK_SIZE)
            await uploadChunk(
              {
                chunk,
                currentChunk: i,
                chunkCount,
                md5
              },
              options
            )

            uploadedChunks.push(i)
            success = true
            updateProgress(i + 1) // 更新進(jìn)度
          } catch (error) {
            retries++

            if (retries >= MAX_RETRIES) {
              throw new Error(`分片 ${i} 上傳失敗: ${error.message} (${MAX_RETRIES}次重試后)`)
            }

            // 指數(shù)退避重試
            const delay = RETRY_DELAY * Math.pow(2, retries)
            await new Promise((resolve) => setTimeout(resolve, delay))
          }
        }
      }

      return uploadedChunks // 返回成功上傳的分片索引
    }