处理警告 can be replaced with lambda

IDEA警告：Anonymous new Callable() can be replaced with lambda more… (Ctrl+F1)

原代码：

        Callable<String> queryAndSyncTag = new Callable<String>() {
            @Override
            public String call() throws Exception {
				//Todo
                return tag;
            }
        };

可调整为：

        Callable<String> queryAndSyncTag = () -> {
        		//Todo
                return tag;
        };