用fastjson解析嵌套json数据

1. json数据类似：

    

   1. {

   2. "code": 0,

   3. "data": {

   4. "city": {

   5. "cityId": 284609,

   6. "counname": "中国",

   7. "name": "东城区",

   8. "pname": "北京市"

   9. },

   10. "liveIndex": {

   11. "2016-09-01": [

   12. {

   13. "day": "2016-09-01",

   14. "desc": "建议用露质面霜打底，水质无油粉底霜，透明粉饼，粉质胭脂。",

   15. "name": "化妆指数",

   16. "status": "控油"

   17. },

   18. {

   19. "day": "2016-09-01",

   20. "desc": "感冒容易发生，少去人群密集的场所有利于降低感冒的几率。",

   21. "name": "感冒指数",

   22. "status": "易发"

   23. },

   24. {

   25. "day": "2016-09-01",

   26. "desc": "洗车后，可保持2天车辆清洁，比较适宜洗车。",

   27. "name": "洗车指数",

   28. "status": "较适宜"

   29. },

   30. {

   31. "day": "2016-09-01",

   32. "desc": "易感人群应适当减少室外活动。",

   33. "name": "空气污染扩散指数",

   34. "status": "中"

   35. },

   36. {

   37. "day": "2016-09-01",

   38. "desc": "天气较热，衣物精干简洁，室内酌情添加空调衫。",

   39. "name": "穿衣指数",

   40. "status": "热"

   41. },

   42. {

   43. "day": "2016-09-01",

   44. "desc": "辐射较弱，涂擦SPF12-15、PA+护肤品。",

   45. "name": "紫外线指数",

   46. "status": "弱"

   47. },

   48. {

   49. "day": "2016-09-01",

   50. "desc": "天气较好，且紫外线辐射不强，适宜户外运动。",

   51. "name": "运动指数",

   52. "status": "适宜"

   53. },

   54. {

   55. "day": "2016-09-01",

   56. "desc": "气压小幅波动，可能会影响鱼儿的进食。",

   57. "name": "钓鱼指数",

   58. "status": "较适宜"

   59. }

   60. ]

   61. }

   62. },

   63. "msg": "success",

   64. "rc": {

   65. "c": 0,

   66. "p": "success"

   67. }

   68. }

   先导入fastjson依赖:

    

    

   1. <!-- https://mvnrepository.com/artifact/com.alibaba/fastjson -->

   2. <dependency>

   3. <groupId>com.alibaba</groupId>

   4. <artifactId>fastjson</artifactId>

   5. <version>1.2.33</version>

   6. </dependency>

   
   java拿出需要的数据:

    

    

   1. public static City getCity(String json){

   2. JSONObject jsonObject = (JSONObject) JSONObject.parseObject(json)

   3. .getJSONObject("data")

   4. .getJSONObject("city");

   5. City city = new City();

   6. city.setCityId(Integer.parseInt(String.valueOf(jsonObject.get("cityId"))));

   7. city.setCityName((String) jsonObject.get("pname"));

   8. city.setCunName((String)jsonObject.get("counname"));

   9. city.setDistrictName((String)jsonObject.get("name"));

   10. return city;

   11. }

   12.  

   13. public static List<Life> getLife(String lifeJson){

   14. List list = new ArrayList();

   15. JSONObject jsonObject = (JSONObject) JSONObject.parseObject(lifeJson)

   16. .getJSONObject("data")

   17. .getJSONObject("liveIndex");

   18. JSONArray jsonArray = jsonObject.getJSONArray(getFormatDate());

   19. for(int i = 0; i < 8; i++){

   20. Life life = new Life();

   21. life.setDay(new Date());

   22. life.setDesc(jsonArray.getJSONObject(i).getString("desc"));

   23. life.setName(jsonArray.getJSONObject(i).getString("name"));

   24. life.setStatus(jsonArray.getJSONObject(i).getString("status"));

   25. life.setCity(getCity(lifeJson));

   26. list.add(life);

   27. }

   28. return list;

   29. }

    

    

    

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