wx.downloadFile({
  url: url,
  success: function(res) {
    console.log(res,586)
    var filePath = res.tempFilePath;
      wx.openDocument({
        fileType: item.oagwFj.wjgs,//是该文件的类型 doc或docx，pdf等
        filePath: filePath,
        success: function(res) {
          console.log(item.oagwFj.wjgs,607)
             console.log(res)//能够打印成功
        },
        fail: function(err) {
          console.log(err,617)
          wx.hideLoading()
          that.$apply()
        }
      })
    
  }
})