前言
本文主要跟大家介紹了關于Java用gson解析Json的相關內容，分享出來供大家參考學習，需要的朋友們下面來一起看看吧。
json數據
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
|
{ "resultcode": "200", "reason": "successed!", "result": { "sk": { "temp": "24", "wind_direction": "西南風", "wind_strength": "2級", "humidity": "51%", "time": "10:11" }, "today": { "temperature": "16℃~27℃", "weather": "陰轉多云", "weather_id": { "fa": "02", "fb": "01" }, "wind": "西南風3-4 級", "week": "星期四", "city": "濱州", "date_y": "2015年06月04日", "dressing_index": "舒適", "dressing_advice": "建議著長袖T恤、襯衫加單褲等服裝。年老體弱者宜著針織長袖襯衫、馬甲和長褲。", "uv_index": "最弱", "comfort_index": "", "wash_index": "較適宜", "travel_index": "", "exercise_index": "較適宜", "drying_index": "" }, "future": [ { "temperature": "16℃~27℃", "weather": "陰轉多云", "weather_id": { "fa": "02", "fb": "01" }, "wind": "西南風3-4 級", "week": "星期四", "date": "20150604" }, { "temperature": "20℃~32℃", "weather": "多云轉晴", "weather_id": { "fa": "01", "fb": "00" }, "wind": "西風3-4 級", "week": "星期五", "date": "20150605" }, { "temperature": "23℃~35℃", "weather": "多云轉陰", "weather_id": { "fa": "01", "fb": "02" }, "wind": "西南風3-4 級", "week": "星期六", "date": "20150606" }, { "temperature": "20℃~33℃", "weather": "多云", "weather_id": { "fa": "01", "fb": "01" }, "wind": "北風微風", "week": "星期日", "date": "20150607" }, { "temperature": "22℃~34℃", "weather": "多云", "weather_id": { "fa": "01", "fb": "01" }, "wind": "西南風3-4 級", "week": "星期一", "date": "20150608" }, { "temperature": "22℃~33℃", "weather": "陰", "weather_id": { "fa": "02", "fb": "02" }, "wind": "西南風3-4 級", "week": "星期二", "date": "20150609" }, { "temperature": "22℃~33℃", "weather": "多云", "weather_id": { "fa": "01", "fb": "01" }, "wind": "南風3-4 級", "week": "星期三", "date": "20150610" } ] }, "error_code": 0} |
解析JSONObject
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
|
import com.google.gson.JsonObject;import com.google.gson.JsonParser;import com.google.gson.JsonSyntaxException;import com.google.gson.JsonIOException;import java.io.FileNotFoundException;import java.io.FileReader;public class ReadJson { public static void main(String []args) { JsonParser parse = new JsonParser(); try { JsonObject json = (JsonObject) parse.parse(new FileReader("weather.json")); System.out.println("resultcode:" + json.get("resultcodeu").getAsInt()); System.out.println("reason:" + json.get("reason").getAsString()); JsonObject result = json.get("result").getAsJsonObject(); JsonObject today = result.get("today").getAsJsonObject(); System.out.println("weak:" + today.get("week").getAsString()); System.out.println("weather:" + today.get("weather").getAsString()); } catch (JsonIOException e) { e.printStackTrace(); } catch (NullPointerException e) { e.printStackTrace(); } catch (JsonSyntaxException e){ e.printStackTrace(); } catch (FileNotFoundException e) { e.printStackTrace(); } }} |
解析JSONArray
|
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
|
import com.google.gson.JsonParser;import com.google.gson.JsonArray;import com.google.gson.JsonObject;import com.google.gson.JsonSyntaxException;import com.google.gson.JsonIOException;import java.io.FileNotFoundException;import java.io.FileReader;public class ReadJsonArray { public static void main(String []args) { JsonParser parse = new JsonParser(); try { JsonObject json = (JsonObject)parse.parse(new FileReader("C:\\Users\\wzh94434\\IdeaProjects\\TestProject\\jsontest\\src\\main\\java\\weather.json")); JsonObject result = json.get("result").getAsJsonObject(); JsonArray futureArray = result.get("future").getAsJsonArray(); for (int i = 0; i < futureArray.size(); ++i) { JsonObject subObj = futureArray.get(i).getAsJsonObject(); System.out.println("------"); System.out.println("week:" + subObj.get("week").getAsString()); System.out.println("weather:" + subObj.get("weather").getAsString()); } } catch (FileNotFoundException e) { e.printStackTrace(); } catch (JsonIOException e) { e.printStackTrace(); } catch (JsonSyntaxException e) { e.printStackTrace(); } }} |
注意：文件路徑相對路徑是從工程根目錄開始
總結
以上就是這篇文章的全部內容了，希望本文的內容對大家的學習或者工作能帶來一定的幫助，如果有疑問大家可以留言交流，謝謝大家對服務器之家的支持。
原文鏈接：http://www.cnblogs.com/kaituorensheng/p/6616126.html
