servlet后台怎样接收对象參数

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主要思想是用js把对象转换成json。然后把json提交到后台去，后台把这个json字符串转换成map对象

<script type="text/javascript">

	function do_test()

	{

		var req = {};

		req['id'] = 1;

		req['name'] = '项羽';

		req['dynasty'] = '楚国';

		var info = {};

		info['nick'] = '西楚霸王';

		info['age'] = 47;

		var user1 = {};

		user1['userid'] = 100;

		user1['username'] = '英布';

		user1['position'] = '九江王';

		var user2 = {};

		user2['userid'] = 200;

		user2['username'] = '魏豹';

		user2['position'] = '西魏王';

		var user3 = {};

		user3['userid'] = 300;

		user3['username'] = '张耳';

		user3['position'] = '常山王';

		var list = [user1, user2, user3];

		req['info'] = info;

		req['list'] = list;

		var json = JSON.stringify(req);

		$.post('/leshop/home.do', {'reqInfos': json}, function(res){

			console.log(res);

		});

	}

</script>