I have done this using "pay" tools like ASPOSE, but I was curious if there are any open source tools out there that will do this.
I am sure there may be tools out there to do that, but if you can get the file into a format that can then be rasterized easily, it may be worth exploring that. eg converting the work doc to pdf then thumbnailing that.
来源：https://stackoverflow.com/questions/5921761/is-there-any-way-to-generate-a-thumbnail-image-of-a-docx-file