Stopwatch sw = Stopwatch.begin();
nutzJson(50*10000);
sw.stop();
System.out.println("Nutz-Json 50w次耗时: " + sw.getDuration());
sw.start();
fastJson(50*10000);
System.out.println("Fast-Json 50w次耗时: " + sw.getDuration());
//-------------------------------------------------------------------
sw.start();