mybatis返回map对象,在线程内将getkey值后赋值给stirng，会线程卡死问题

  // 创建定时任务ScheduledFuture<?> future = scheduler.scheduleAtFixedRate(createTk(rule),initialDelay,calculateFixedRate(getCron(rule)),TimeUnit.MILLISECONDS);scheduledTasks.put(rule.getId(), future);}private Runnable createTk(Rule rule) {return () -> {ConcurrentHashMap<String,Object>  dto = roleService.execExecsql("1");Integer id = (Integer) dto.get("id");String Code = (String) dto.get("code");try {test.sendmsg(id,code);} catch (Exception e) {throw new RuntimeException(e);}};}

问题原因 是返回ConcurrentHashMap<String,String> ，但是我查询的id返回的时Int类型 这个时候，执行这个代码，线程会卡死  具体原因还不清楚 Integer idPatient = (Integer) dto.get("id"); 要慎用最好是不要<String,String>这样写泛型，改成<String,Object>解决