add 即时消息扩展字段

nb-im/src/main/java/com/nb/im/controller/ImRoomController.java

@@ -100,7 +100,7 @@ public class ImRoomController implements BaseSaveController<ImRoomEntity,String>
         return R.success(result);
     }
 
-    @PostMapping("/view/{id}")
+    @GetMapping("/view/{id}")
     @ApiOperation(value = "根据id查询聊天室")
     public R<ImRoomDetailDto> getById(@PathVariable("id") String id){
         ImRoomDetailDto result= BeanUtil.toBean(imRoomService.getById(id),ImRoomDetailDto.class);