// Get The Root

Document root = (Document) session.newRequest("Document.Fetch").set(
        "value", "/").execute();
// Create a File Document
session.newRequest("Document.Create").setInput(root).set("type", "File").set(
        "name", "myfile").set("properties", "dc:title=My File").execute();

// Upload The file
File file = getTheFileToUpload();
FileBlob fb = new FileBlob(file);
fb.setMimeType("text/xml");
// uploading a file will return null since we used HEADER_NX_VOIDOP
session.newRequest("Blob.Attach").setHeader(
        Constants.HEADER_NX_VOIDOP, "true").setInput(fb)
        .set("document", "/myfile").execute();

File content not creating in Nuxeo server Error message:“Binary request not supported”