var stream = weex.requireModule('stream')  export default {    data () {      return {        myimg:'unknown'      }    },    methods: {      getStarCount (repo, callback) {        return stream.fetch({          method: 'GET',          type: 'json',          url: 'https://c.sevenkids.cn/yzmm/account/knowledge/ajaxOpenSerachKnowledgeList'        }, callback)      }    },    created () {      this.getStarCount('11', res => {        this.myimg = res.ok ?JSON.stringify(res):JSON.stringify(res)      })    }  }  這是請求頭：Referer http://dotwe.org/raw/htmlVue/...User-Agent Mozilla/5.0 (Macintosh; Intel Mac OS X 10_12_3) AppleWebKit/602.4.8 (KHTML, like Gecko) Version/10.0.3 Safari/602.4.8Origin http://dotwe.org返回結果：{"status":-1,"ok":false,"statusText":"","data":""}是這里引用的‘stream’ 需要自己實現嗎？var stream = weex.requireModule('stream')