Rust and POI java

Is there anything that like POI (in JAVA APACHE)?

There are various libraries that can read some microsoft files, e.g. there's calamine for spreadsheets and docx for word files. I have no idea how good these libraries are.

yes,I have used calamine befofe, and some library to write xlsx, but I want if there are more advanced functions such as merging columns and inserting pictures?

You could take a look at some of the other excel crates, but there might not be something that supports pictures.

I am not aware anything compareable to POI, but
if you speak German and know how to read/write xml, here is an excellent explanation of excel s structure:
https://www.data2type.de/xml-xslt-xslfo/spreadsheetml/drawingml/

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