Java中利用gson解析Json实例教程
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2024-02-21 08:18:52
前言
本文主要跟大家介绍了关于java用gson解析json的相关内容，分享出来供大家参考学习，需要的朋友们下面来一起看看吧。
json数据
{
"r...
前言
本文主要跟大家介绍了关于java用gson解析json的相关内容，分享出来供大家参考学习，需要的朋友们下面来一起看看吧。
json数据
{
"resultcode": "200",
"reason": "successed!",
"result": {
"sk": {
"temp": "24",
"wind_direction": "西南风",
"wind_strength": "2级",
"humidity": "51%",
"time": "10:11"
},
"today": {
"temperature": "16℃~27℃",
"weather": "阴转多云",
"weather_id": {
"fa": "02",
"fb": "01"
},
"wind": "西南风3-4 级",
"week": "星期四",
"city": "滨州",
"date_y": "2015年06月04日",
"dressing_index": "舒适",
"dressing_advice": "建议着长袖t恤、衬衫加单裤等服装。年老体弱者宜着针织长袖衬衫、马甲和长裤。",
"uv_index": "最弱",
"comfort_index": "",
"wash_index": "较适宜",
"travel_index": "",
"exercise_index": "较适宜",
"drying_index": ""
},
"future": [
{
"temperature": "16℃~27℃",
"weather": "阴转多云",
"weather_id": {
"fa": "02",
"fb": "01"
},
"wind": "西南风3-4 级",
"week": "星期四",
"date": "20150604"
},
{
"temperature": "20℃~32℃",
"weather": "多云转晴",
"weather_id": {
"fa": "01",
"fb": "00"
},
"wind": "西风3-4 级",
"week": "星期五",
"date": "20150605"
},
{
"temperature": "23℃~35℃",
"weather": "多云转阴",
"weather_id": {
"fa": "01",
"fb": "02"
},
"wind": "西南风3-4 级",
"week": "星期六",
"date": "20150606"
},
{
"temperature": "20℃~33℃",
"weather": "多云",
"weather_id": {
"fa": "01",
"fb": "01"
},
"wind": "北风微风",
"week": "星期日",
"date": "20150607"
},
{
"temperature": "22℃~34℃",
"weather": "多云",
"weather_id": {
"fa": "01",
"fb": "01"
},
"wind": "西南风3-4 级",
"week": "星期一",
"date": "20150608"
},
{
"temperature": "22℃~33℃",
"weather": "阴",
"weather_id": {
"fa": "02",
"fb": "02"
},
"wind": "西南风3-4 级",
"week": "星期二",
"date": "20150609"
},
{
"temperature": "22℃~33℃",
"weather": "多云",
"weather_id": {
"fa": "01",
"fb": "01"
},
"wind": "南风3-4 级",
"week": "星期三",
"date": "20150610"
}
]
},
"error_code": 0
}
解析jsonobject
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
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：文件路径相对路径是从工程根目录开始
总结
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