用fastjson解析嵌套json数据

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. }
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. }

https://blog.youkuaiyun.com/eddie233/article/details/73730283

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