用fastjson解析嵌套json数据

柔情只为你懂 2021-09-15 16:18 460阅读 0赞

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.  &lt;!-- https://mvnrepository.com/artifact/com.alibaba/fastjson --&gt;
    2.  &lt;dependency&gt;
    3.  &lt;groupId&gt;com.alibaba&lt;/groupId>
    4.  <artifactId>fastjson</artifactId&gt;
    5.  &lt;version&gt;1.2.33&lt;/version>
    6.  </dependency&gt;
    
      
    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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