Question

我正在尝试使用Meteor-CollectionFS上传图片

Simlpe图片上传已成功上传。

但现在我也试着保留图像的缩略图。

但它会出现以下错误：

W20151211-14:38:38.240(5)? (STDERR) FS.Transform.createWriteStream transform function failed, Error: 
I20151211-14:38:38.242(5)? Exception in queued task: Error: cfs:graphicsmagick could not find "graphicsMagick" or "imageMagick"
I20151211-14:38:38.242(5)?     at gm (packages/cfs_graphicsmagick/packages/cfs_graphicsmagick.js:14:1)
I20151211-14:38:38.242(5)?     at Object.createSquareThumb (model/model.js:9:1)
I20151211-14:38:38.242(5)?     at packages/cfs_storage-adapter/packages/cfs_storage-adapter.js:355:1
I20151211-14:38:38.242(5)?     at addPassThrough (packages/cfs_storage-adapter/packages/cfs_storage-adapter.js:421:1)
I20151211-14:38:38.243(5)?     at [object Object].FS.Transform.createWriteStream (packages/cfs_storage-adapter/packages/cfs_storage-adapter.js:352:1)
I20151211-14:38:38.243(5)?     at Object.self.adapter.createWriteStream (packages/cfs_storage-adapter/packages/cfs_storage-adapter.js:171:1)
I20151211-14:38:38.243(5)?     at saveCopy (packages/cfs_worker/packages/cfs_worker.js:180:1)
I20151211-14:38:38.243(5)?     at Object.fsCollection.files.find.observe.added (packages/cfs_worker/packages/cfs_worker.js:42:1)
I20151211-14:38:38.243(5)?     at [object Object].observeChangesCallbacks.added (packages/minimongo/observe.js:153:1)
I20151211-14:38:38.243(5)?     at self.applyChange.added (packages/minimongo/observe.js:53:1)

这是我的代码：

var createThumb = function(fileObj, readStream, writeStream) {
  // Transform the image into a 10x10px thumbnail
  gm(readStream, fileObj.name()).resize('10', '10').stream().pipe(writeStream);
};

Images = new FS.Collection("images", {
  stores: [
    new FS.Store.FileSystem("thumbs", { transformWrite: createThumb }, {path: "~/uploads/thumbs"}),
    new FS.Store.FileSystem("images", {path: "~/uploads"}),
  ],
  filter: {
    allow: {
      contentTypes: ['image/*'] //allow only images in this FS.Collection
    }
  }
});

我还添加了以下包装：

meteor add cfs:graphicsmagick

那么我在这里失踪的是什么？

Answer 1

安装图形魔法。包只是gm的包装器，你必须安装它。

我不记得确切的界面，但我认为Fs集合只接受一个对象，所以改变：

  new FS.Store.FileSystem("thumbs", { transformWrite: createThumb }, {path: "~/uploads/thumbs"})

在：

  new FS.Store.FileSystem("thumbs", { transformWrite: createThumb , path: "~/uploads/thumbs"})

FS.Transform.createWriteStream转换函数失败，错误

1 个答案: