Java解析json嵌套数组

1. 代码

public void JsonArray(){
		String jsonStr = "[{\"en_maker_name\": \"龙洞\",\"ex_maker_name\": \"沙太\",\"tollRoads\": [{\"need_fee\": \"1.46\",\"road_code\": \"30\",\"road_name\": \"华南快速\",\"toll_distance\": \"2300\"},{\"need_fee\": \"2.53\",\"road_code\": \"31\",\"road_name\": \"华南三期\",\"toll_distance\": \"4000\"}],\"toll_distance\": \"6300\",\"toll_over_weight\": \"0.00 \",\"tolls\": \"4.00\"}]";
		//先转换外层数组
		JSONArray jsonarray = JSONArray.fromObject(jsonStr);
		List<RouteInfoTollsStep> tollsSteps = JSONArray.toList(jsonarray, RouteInfoTollsStep.class);
		for(int i=0;i<tollsSteps.size();i++){
			//遍历外层数组，拿到当前的数组对象
			JSONObject jsonObject=jsonarray.getJSONObject(i);
			//取出当前数组对象的tollRoads属性数组
			String jsonStr2 = jsonObject.getString("tollRoads");
			JSONArray jsonarray2 = JSONArray.fromObject(jsonStr2);
			List<RouteInfoTollsRoad> tollRoads = JSONArray.toList(jsonarray2, RouteInfoTollsRoad.class);
			//设置第二层数组的值
			tollsSteps.get(i).setTollRoads(tollRoads);
		}
		System.out.println("aaa================="+JSON.toJSONString(tollsSteps));
	}