优化文件上传接口

src/main/java/com/oo/demo/controller/OnlyOfficeController.java

      * @param caseId
      * @return
      */
-    @PostMapping("/files/upload")
+    @PostMapping("/files/upload/{caseId}")
     @ResponseBody
-    public Object upload(@RequestParam("file") MultipartFile[] file, @RequestParam(name = "caseId") String caseId) {
+    public Object upload(@RequestParam("file") MultipartFile[] file, @PathVariable(required = true) String caseId) {
         List<OnFile> result = new ArrayList<>();
         int i = 0;
         for (MultipartFile multipartFile : file) {