Method download

front/utils/luch-request/core/Request.js:369–410

(url, options = {})

  }

  download(url, options = {}) {
    return new Promise((resolve, reject) => {
      let next = true
      const pubConfig = {
        baseUrl: this.config.baseUrl,
        url,
        method: 'DOWNLOAD',
        header: {...this.config.header, ...(options.header || {})},
        params: options.params || {},
        custom: {...this.config.custom, ...(options.custom || {})},
        getTask: options.getTask || this.config.getTask
      }
      const cancel = (t = 'handle cancel', config = pubConfig) => {
        const err = {
          errMsg: t,
          config: config
        }
        reject(err)
        next = false
      }

      const handleRe = {...this.requestBeforeFun(pubConfig, cancel)}
      if (!next) return
      const requestTask = uni.downloadFile({
        url: buildURL(buildFullPath(handleRe.baseUrl, handleRe.url), handleRe.params),
        header: handleRe.header,
        complete: (response) => {
          response.config = handleRe
          if (this.validateStatus(response.statusCode)) { // 成功
            response = this.requestComFun(response)
            resolve(response)
          } else {
            response = this.requestComFail(response)
            reject(response)
          }
        }
      })
      if (handleRe.getTask) {
        handleRe.getTask(requestTask, handleRe)
      }
    })
  }
}