fix：优化打印机逻辑

src/main/java/com/dpkj/modules/print/controller/MS439Controller.java

@@ -29,8 +29,8 @@ public class MS439Controller {
     }
 
     @PostMapping("/getStatus")
-    public Result<String> print(){
-        this.ms439PrintService.getStatus();
+    public Result<String> print(@RequestParam(defaultValue = "A4") String papersource){
+        this.ms439PrintService.getStatus(papersource);
         return Result.ok();
     }