Question

java菜鸟求助如何将list数据放入json中??

ObjectNode waterMeterNode = mapper.createObjectNode();
waterMeterNode.put("serviceId", "WaterMeter");
ObjectNode waterMeterData = mapper.createObjectNode();

waterMeterData.put("timeOfReading", md.getTimeOfReading());
waterMeterData.put("P1", md.getP1());
waterMeterData.put("P2", md.getP2());
waterMeterData.put("P3", md.getP3());
waterMeterData.put("A1", md.getA1());
waterMeterData.put("A2", md.getA2());
waterMeterData.put("A3", md.getA3());
这段代码需要生成json数据,不过get里面传过来的是list数据它就会报错,我应该怎么修改才能够将list数据放入json中?

Answer 1

JSONArray resultJson=new JSONArray();
resultJson.add(); //.add()可以添加List，转化为json

Answer 2