如何解析json字符串

{"OrderNumber":"ECI2019120414535273204025","Paging":{"PageSize":10,"PageIndex":1,"TotalRecords":65},"Result":[{"KeyNo":"9cce0780ab7644008b73bc2120479d31","Name":"小米科技有限责任公司","OperName":"雷军","StartDate":"2010-03-03 00:00:00","Status":"在业","No":"110108012660422","CreditCode":"91110108551385082Q"},{"KeyNo":"02ff6e6bed57a655db1bc67dfa829984","Name":"广东小米科技有限责任公司","OperName":"雷军","StartDate":"2015-09-21 00:00:00","Status":"在业","No":"440101000376086","CreditCode":"91440101MA59A5P606"},{"KeyNo":"ccee977823bcb7df647dc3dc137b4412","Name":"小米科技有限责任公司深圳分公司","OperName":"程豪","StartDate":"2012-03-07 00:00:00","Status":"存续","No":"440301106049054","CreditCode":"91440300056178676C"},{"KeyNo":"1b12f7bc801cb2aeb99d29598af91db5","Name":"小米科技有限责任公司厦门分公司","OperName":"黎万强","StartDate":"2012-06-21 00:00:00","Status":"存续","No":"350203280036206","CreditCode":"91350203094247302B"},{"KeyNo":"6960159df579c85e194537307f410b6f","Name":"小米科技有限责任公司重庆分公司","OperName":"黎万强","StartDate":"2012-04-23 00:00:00","Status":"存续","No":"500901300031169","CreditCode":"91500103595160475E"},{"KeyNo":"2fbb8756bf482205e4591a5ff78d80a5","Name":"小米科技有限责任公司天津南开分公司","OperName":"黎万强","StartDate":"2014-04-29 00:00:00","Status":"存续","No":"120104000275380","CreditCode":"9112010430032623XE"},{"KeyNo":"e54fa531bb62c3931cba7d10206c1bc7","Name":"深圳小米米科技有限责任公司","OperName":"郭来力","StartDate":"2014-04-16 00:00:00","Status":"存续","No":"440301109172378","CreditCode":"914403000943323397"},{"KeyNo":"ad622acd512e8f07fb287627b6901a7d","Name":"西藏小米科技有限责任公司","OperName":"雷军","StartDate":"2012-10-29 00:00:00","Status":"注销","No":"540091100001322","CreditCode":""},{"KeyNo":"67c153c5baa013aea159f1f3d85e7115","Name":"唐山小米科技有限责任公司","OperName":"王卿","StartDate":"2019-07-26 00:00:00","Status":"存续","No":"","CreditCode":"91130223MA0DWHMQ2R"},{"KeyNo":"e9e467a49d23f30d9feaf4c651fa71b9","Name":"甘肃小米智能科技有限责任公司","OperName":"王小龙","StartDate":"2017-11-23 00:00:00","Status":"存续","No":"620702200093937","CreditCode":"91620702MA733ATW2H"}],"Status":"200","Message":"查询成功"}}






public class TestJson {

	public static void main(String[] args) {
		
		String jsonString = "[{\"KeyNo\":\"9cce0780ab7644008b73bc2120479d31\",\"Name\":\"小米科技有限责任公司\",\"OperName\":\"雷军\",\"StartDate\":\"2010-03-03 00:00:00\",\"Status\":\"在业\",\"No\":\"110108012660422\",\"CreditCode\":\"91110108551385082Q\"},{\"KeyNo\":\"02ff6e6bed57a655db1bc67dfa829984\",\"Name\":\"广东小米科技有限责任公司\",\"OperName\":\"雷军\",\"StartDate\":\"2015-09-21 00:00:00\",\"Status\":\"在业\",\"No\":\"440101000376086\",\"CreditCode\":\"91440101MA59A5P606\"},{\"KeyNo\":\"ccee977823bcb7df647dc3dc137b4412\",\"Name\":\"小米科技有限责任公司深圳分公司\",\"OperName\":\"程豪\",\"StartDate\":\"2012-03-07 00:00:00\",\"Status\":\"存续\",\"No\":\"440301106049054\",\"CreditCode\":\"91440300056178676C\"},{\"KeyNo\":\"1b12f7bc801cb2aeb99d29598af91db5\",\"Name\":\"小米科技有限责任公司厦门分公司\",\"OperName\":\"黎万强\",\"StartDate\":\"2012-06-21 00:00:00\",\"Status\":\"存续\",\"No\":\"350203280036206\",\"CreditCode\":\"91350203094247302B\"},{\"KeyNo\":\"6960159df579c85e194537307f410b6f\",\"Name\":\"小米科技有限责任公司重庆分公司\",\"OperName\":\"黎万强\",\"StartDate\":\"2012-04-23 00:00:00\",\"Status\":\"存续\",\"No\":\"500901300031169\",\"CreditCode\":\"91500103595160475E\"},{\"KeyNo\":\"2fbb8756bf482205e4591a5ff78d80a5\",\"Name\":\"小米科技有限责任公司天津南开分公司\",\"OperName\":\"黎万强\",\"StartDate\":\"2014-04-29 00:00:00\",\"Status\":\"存续\",\"No\":\"120104000275380\",\"CreditCode\":\"9112010430032623XE\"},{\"KeyNo\":\"e54fa531bb62c3931cba7d10206c1bc7\",\"Name\":\"深圳小米米科技有限责任公司\",\"OperName\":\"郭来力\",\"StartDate\":\"2014-04-16 00:00:00\",\"Status\":\"存续\",\"No\":\"440301109172378\",\"CreditCode\":\"914403000943323397\"},{\"KeyNo\":\"ad622acd512e8f07fb287627b6901a7d\",\"Name\":\"西藏小米科技有限责任公司\",\"OperName\":\"雷军\",\"StartDate\":\"2012-10-29 00:00:00\",\"Status\":\"注销\",\"No\":\"540091100001322\",\"CreditCode\":\"\"},{\"KeyNo\":\"67c153c5baa013aea159f1f3d85e7115\",\"Name\":\"唐山小米科技有限责任公司\",\"OperName\":\"王卿\",\"StartDate\":\"2019-07-26 00:00:00\",\"Status\":\"存续\",\"No\":\"\",\"CreditCode\":\"91130223MA0DWHMQ2R\"},{\"KeyNo\":\"e9e467a49d23f30d9feaf4c651fa71b9\",\"Name\":\"甘肃小米智能科技有限责任公司\",\"OperName\":\"王小龙\",\"StartDate\":\"2017-11-23 00:00:00\",\"Status\":\"存续\",\"No\":\"620702200093937\",\"CreditCode\":\"91620702MA733ATW2H\"}]";
		System.out.println(jsonString);
		
		JSONArray array = JSONArray.fromObject(jsonString);
		System.out.println(array.size());
		
		for(int i=0;i<array.size();i++) {
			JSONObject item =  (JSONObject) array.get(i);
			//System.out.println(item);
			System.out.println(item.getString("Name"));
			System.out.println(item.getString("CreditCode"));
		}
		
		
	}
	
	
	public static void name() {
		
		String jsonString = "{\"OrderNumber\":\"ECI2019120414535273204025\",\"Paging\":{\"PageSize\":10,\"PageIndex\":1,\"TotalRecords\":65},\"Result\":[{\"KeyNo\":\"9cce0780ab7644008b73bc2120479d31\",\"Name\":\"小米科技有限责任公司\",\"OperName\":\"雷军\",\"StartDate\":\"2010-03-03 00:00:00\",\"Status\":\"在业\",\"No\":\"110108012660422\",\"CreditCode\":\"91110108551385082Q\"},{\"KeyNo\":\"02ff6e6bed57a655db1bc67dfa829984\",\"Name\":\"广东小米科技有限责任公司\",\"OperName\":\"雷军\",\"StartDate\":\"2015-09-21 00:00:00\",\"Status\":\"在业\",\"No\":\"440101000376086\",\"CreditCode\":\"91440101MA59A5P606\"},{\"KeyNo\":\"ccee977823bcb7df647dc3dc137b4412\",\"Name\":\"小米科技有限责任公司深圳分公司\",\"OperName\":\"程豪\",\"StartDate\":\"2012-03-07 00:00:00\",\"Status\":\"存续\",\"No\":\"440301106049054\",\"CreditCode\":\"91440300056178676C\"},{\"KeyNo\":\"1b12f7bc801cb2aeb99d29598af91db5\",\"Name\":\"小米科技有限责任公司厦门分公司\",\"OperName\":\"黎万强\",\"StartDate\":\"2012-06-21 00:00:00\",\"Status\":\"存续\",\"No\":\"350203280036206\",\"CreditCode\":\"91350203094247302B\"},{\"KeyNo\":\"6960159df579c85e194537307f410b6f\",\"Name\":\"小米科技有限责任公司重庆分公司\",\"OperName\":\"黎万强\",\"StartDate\":\"2012-04-23 00:00:00\",\"Status\":\"存续\",\"No\":\"500901300031169\",\"CreditCode\":\"91500103595160475E\"},{\"KeyNo\":\"2fbb8756bf482205e4591a5ff78d80a5\",\"Name\":\"小米科技有限责任公司天津南开分公司\",\"OperName\":\"黎万强\",\"StartDate\":\"2014-04-29 00:00:00\",\"Status\":\"存续\",\"No\":\"120104000275380\",\"CreditCode\":\"9112010430032623XE\"},{\"KeyNo\":\"e54fa531bb62c3931cba7d10206c1bc7\",\"Name\":\"深圳小米米科技有限责任公司\",\"OperName\":\"郭来力\",\"StartDate\":\"2014-04-16 00:00:00\",\"Status\":\"存续\",\"No\":\"440301109172378\",\"CreditCode\":\"914403000943323397\"},{\"KeyNo\":\"ad622acd512e8f07fb287627b6901a7d\",\"Name\":\"西藏小米科技有限责任公司\",\"OperName\":\"雷军\",\"StartDate\":\"2012-10-29 00:00:00\",\"Status\":\"注销\",\"No\":\"540091100001322\",\"CreditCode\":\"\"},{\"KeyNo\":\"67c153c5baa013aea159f1f3d85e7115\",\"Name\":\"唐山小米科技有限责任公司\",\"OperName\":\"王卿\",\"StartDate\":\"2019-07-26 00:00:00\",\"Status\":\"存续\",\"No\":\"\",\"CreditCode\":\"91130223MA0DWHMQ2R\"},{\"KeyNo\":\"e9e467a49d23f30d9feaf4c651fa71b9\",\"Name\":\"甘肃小米智能科技有限责任公司\",\"OperName\":\"王小龙\",\"StartDate\":\"2017-11-23 00:00:00\",\"Status\":\"存续\",\"No\":\"620702200093937\",\"CreditCode\":\"91620702MA733ATW2H\"}],\"Status\":\"200\",\"Message\":\"查询成功\"}";
		System.out.println(jsonString);
		
		JSONObject obj  = JSONObject.fromObject(jsonString);
		
		System.out.println(obj.getString("OrderNumber"));
		System.out.println(obj.getInt("Status"));
		System.out.println(obj.getString("Message"));
		
		JSONObject PagingObj = obj.getJSONObject("Paging");
		System.out.println(PagingObj);
		System.out.println(PagingObj.getInt("PageSize"));
		
		JSONArray resultArray = obj.getJSONArray("Result");
		System.out.println(resultArray.size());
		
		for(int i=0;i<resultArray.size();i++) {
			JSONObject item =  (JSONObject) resultArray.get(i);
			//System.out.println(item);
			System.out.println(item.getString("Name"));
			System.out.println(item.getString("CreditCode"));
		}
		
		
		
	}
	

}