【HarmonyOS】【Json解析】ZSON 與 HiJson 使用
阿新 • • 發佈:2021-12-10
鴻蒙開發 - Json解析 - 官方ZSON 和 非官方的 HiJson 的使用
HiLog配置
為了方便除錯,檢視,先設定好Hilog
public static final HiLogLabel loglabel = new HiLogLabel(HiLog.LOG_APP,0x11102,"【xrilang】");
ZSONObject
//Json測試2:使用ZSONObject(官方) // 1.將總Json字串轉為一個ZSONObject ZSONObject zsonObject1 = ZSONObject.stringToZSON(str); // 2.將所需要的內容從ZSONObject物件中取出 //// 2.1 當所需要的內容是陣列時 ////// 2.1.1 將所需陣列內容 從 ZSONObject 中取出來 轉換為 ZSONArray 得到的是一個新Json ZSONArray result1 = zsonObject1.getZSONArray("lives"); ////// 2.1.2 將這個新Json轉為字串輸出看效果 String result2 = result1.getString(0); HiLog.info(loglabel,"【ZSONObjec】result2::"+result2); //////// 【輸出結果】 {"adcode":"130500","city":"邢臺市","humidity":"98","province":"河北","reporttime":"2020-09-26 21:58:34","temperature":"17","weather":"多雲","winddirection":"北","windpower":"≤3"} ////------- ZSONObject zsonObject2 = ZSONObject.stringToZSON(result2); ////------- //// 2.2 當需要的內容是 普通資料型別時(例如String,int,double等) ////// 2.2.1 將所需內容取出,並存放在變數中,輸出檢視效果 String result3 = zsonObject2.getString("province"); HiLog.info(loglabel,"【ZSONObjec】result3::"+result3);
HiJson(第三方)
獲取與配置Json
獲取HiJson
點選上方連結,複製如下圖的紅框內容
implementation 'org.devio.hi.json:hijson:1.0.0'
配置到專案檔案中
HiJson使用
準備好一段Json
jsonString: { "status": "1", "count": "1", "info": "OK", "infocode": "10000", "lives": [ { "province": "河北", "city": "邢臺市", "adcode": "130500", "weather": "多雲", "temperature": "17", "winddirection": "北", "windpower": "≤3", "humidity": "98", "reporttime": "2020-09-26 21:58:34" } ] }
匯入HiJson包
import org.devio.hi.json.HiJson;
使用HiJson
//Json測試1:使用HiJson(第三方) HiJson hiJson = new HiJson(str).get("lives").get(0); String province = hiJson.value("province"); String city = hiJson.value("city"); HiLog.info(loglabel,"【HiJson】省市:"+province+" 城市:"+city);
執行結果
完整程式碼
MainAbility.java
package cc.mllt.eduxiancheng.slice;
import cc.mllt.eduxiancheng.ResourceTable;
import ohos.aafwk.ability.AbilitySlice;
import ohos.aafwk.content.Intent;
import ohos.hiviewdfx.HiLog;
import ohos.hiviewdfx.HiLogLabel;
import ohos.utils.zson.ZSONArray;
import ohos.utils.zson.ZSONObject;
import org.devio.hi.json.HiJson;
public class MainAbilitySlice extends AbilitySlice {
String str = "{\n" +
" \"status\": \"1\",\n" +
" \"count\": \"1\",\n" +
" \"info\": \"OK\",\n" +
" \"infocode\": \"10000\",\n" +
" \"lives\": [\n" +
" {\n" +
" \"province\": \"河北\",\n" +
" \"city\": \"邢臺市\",\n" +
" \"adcode\": \"130500\",\n" +
" \"weather\": \"多雲\",\n" +
" \"temperature\": \"17\",\n" +
" \"winddirection\": \"北\",\n" +
" \"windpower\": \"≤3\",\n" +
" \"humidity\": \"98\",\n" +
" \"reporttime\": \"2020-09-26 21:58:34\"\n" +
" }\n" +
" ]\n" +
"}";
public static final HiLogLabel loglabel = new HiLogLabel(HiLog.LOG_APP,0x11102,"【xrilang】");
@Override
public void onStart(Intent intent) {
super.onStart(intent);
super.setUIContent(ResourceTable.Layout_ability_main);
//執行緒測試
MyExecutor.runChild(new Runnable() {
@Override
public void run() {
HiLog.info(loglabel,"MyExecutor:在非同步執行緒執行任務開始");
//Json測試1:使用HiJson(第三方)
HiJson hiJson = new HiJson(str).get("lives").get(0);
String province = hiJson.value("province");
String city = hiJson.value("city");
HiLog.info(loglabel,"【HiJson】省市:"+province+" 城市:"+city);
//Json測試2:使用ZSONObject(官方)
// 1.將總Json字串轉為一個ZSONObject
ZSONObject zsonObject1 = ZSONObject.stringToZSON(str);
// 2.將所需要的內容從ZSONObject物件中取出
//// 2.1 當所需要的內容是陣列時
////// 2.1.1 將所需陣列內容 從 ZSONObject 中取出來 轉換為 ZSONArray 得到的是一個新Json
ZSONArray result1 = zsonObject1.getZSONArray("lives");
////// 2.1.2 將這個新Json轉為字串輸出看效果
String result2 = result1.getString(0);
HiLog.info(loglabel,"【ZSONObjec】result2::"+result2);
//////// 【輸出結果】 {"adcode":"130500","city":"邢臺市","humidity":"98","province":"河北","reporttime":"2020-09-26 21:58:34","temperature":"17","weather":"多雲","winddirection":"北","windpower":"≤3"}
////-------
ZSONObject zsonObject2 = ZSONObject.stringToZSON(result2);
////-------
//// 2.2 當需要的內容是 普通資料型別時(例如String,int,double等)
////// 2.2.1 將所需內容取出,並存放在變數中,輸出檢視效果
String result3 = zsonObject2.getString("province");
HiLog.info(loglabel,"【ZSONObjec】result3::"+result3);
HiLog.info(loglabel,"MyExecutor:在非同步執行緒執行任務結束");
MyExecutor.runMain(new Runnable() {
@Override
public void run() {
HiLog.info(loglabel,"MyExecutor:回到Main執行緒執行任務");
}
});
}
});
}
@Override
public void onActive() {
super.onActive();
}
@Override
public void onForeground(Intent intent) {
super.onForeground(intent);
}
}
執行結果
MyExecutor.java
package cc.mllt.eduxiancheng.slice; import ohos.eventhandler.EventHandler; import ohos.eventhandler.EventRunner; public class MyExecutor { /** * 切換任務到主執行緒執行 * @param runnable */ public static void runMain(Runnable runnable) { //切換到主執行緒 EventRunner runner = EventRunner.getMainEventRunner(); EventHandler eventHandler = new EventHandler(runner); //執行任務 eventHandler.postSyncTask(runnable); } /** * 在子執行緒執行任務 * @param runnable */ public static void runChild(Runnable runnable) { //開啟一個新執行緒 EventRunner runner = EventRunner.create(true); EventHandler eventHandler = new EventHandler(runner); //執行任務 eventHandler.postTask(runnable,0,EventHandler.Priority.IMMEDIATE); } }
相關文章:【HarmonyOS】【多執行緒與併發】EventHandler - 萌狼藍天 - 部落格園 (cnblogs.com/mllt)
作者:萌狼藍天,轉載請註明原文連結:https://www.cnblogs.com/mllt/p/HarmonyOS_edu_note_JSON_Zson_HiJson.html | 萌狼藍天@嗶哩嗶哩 | QQ:3447902411(僅限技術交流,新增請說明方向)