HiLog配置
为了方便调试，查看，先设置好Hilog
public static final HiLogLabel loglabel = new HiLogLabel(HiLog.LOG_APP,0x11102,"【xrilang】");
ZSONObject
//Json测试2：使用ZSONObject（官方）
// 1.将总Json字符串转为一个ZSONObject
ZSONObject zsonObject1 = ZSONObject.stringToZSON(str);
// 2.将所需要的内容从ZSONObject对象中取出
//// 2.1 当所需要的内容是数组时
////// 2.1.1 将所需数组内容 从 ZSONObject 中取出来 转换为 ZSONArray 得到的是一个新Json
ZSONArray result1 = zsonObject1.getZSONArray("lives");
////// 2.1.2 将这个新Json转为字符串输出看效果
String result2 = result1.getString(0);
HiLog.info(loglabel,"【ZSONObjec】result2::"+result2);
//////// 【输出结果】 {"adcode":"130500","city":"邢台市","humidity":"98","province":"河北","reporttime":"2020-09-26 21:58:34","temperature":"17","weather":"多云","winddirection":"北","windpower":"≤3"}
////-------
ZSONObject zsonObject2 = ZSONObject.stringToZSON(result2);
////-------
//// 2.2 当需要的内容是 普通数据类型时（例如String，int，double等）
////// 2.2.1 将所需内容取出，并存放在变量中,输出查看效果
String result3 = zsonObject2.getString("province");
HiLog.info(loglabel,"【ZSONObjec】result3::"+result3);
HiJson（第三方）
获取与配置Json
获取HiJson
点击上方链接，复制如下图的红框内容
implementation 'org.devio.hi.json:hijson:1.0.0'
配置到项目文件中
HiJson使用
准备好一段Json
jsonString：
{
"status": "1",
"count": "1",
"info": "OK",
"infocode": "10000",
"lives": [
{
"province": "河北",
"city": "邢台市",
"adcode": "130500",
"weather": "多云",
"temperature": "17",
"winddirection": "北",
"windpower": "≤3",
"humidity": "98",
"reporttime": "2020-09-26 21:58:34"
}
]
}
导入HiJson包
import org.devio.hi.json.HiJson;
使用HiJson
//Json测试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);
执行结果
完整代码
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\": \"邢台市\",\n" +
" \"adcode\": \"130500\",\n" +
" \"weather\": \"多云\",\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);
//线程测试
MyExecutor.runChild(new Runnable() {
@Override
public void run() {
HiLog.info(loglabel,"MyExecutor:在异步线程执行任务开始");
//Json测试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测试2：使用ZSONObject（官方）
// 1.将总Json字符串转为一个ZSONObject
ZSONObject zsonObject1 = ZSONObject.stringToZSON(str);
// 2.将所需要的内容从ZSONObject对象中取出
//// 2.1 当所需要的内容是数组时
////// 2.1.1 将所需数组内容 从 ZSONObject 中取出来 转换为 ZSONArray 得到的是一个新Json
ZSONArray result1 = zsonObject1.getZSONArray("lives");
////// 2.1.2 将这个新Json转为字符串输出看效果
String result2 = result1.getString(0);
HiLog.info(loglabel,"【ZSONObjec】result2::"+result2);
//////// 【输出结果】 {"adcode":"130500","city":"邢台市","humidity":"98","province":"河北","reporttime":"2020-09-26 21:58:34","temperature":"17","weather":"多云","winddirection":"北","windpower":"≤3"}
////-------
ZSONObject zsonObject2 = ZSONObject.stringToZSON(result2);
////-------
//// 2.2 当需要的内容是 普通数据类型时（例如String，int，double等）
////// 2.2.1 将所需内容取出，并存放在变量中,输出查看效果
String result3 = zsonObject2.getString("province");
HiLog.info(loglabel,"【ZSONObjec】result3::"+result3);
HiLog.info(loglabel,"MyExecutor:在异步线程执行任务结束");
MyExecutor.runMain(new Runnable() {
@Override
public void run() {
HiLog.info(loglabel,"MyExecutor:回到Main线程执行任务");
}
});
}
});
}
@Override
public void onActive() {
super.onActive();
}
@Override
public void onForeground(Intent intent) {
super.onForeground(intent);
}
}
运行结果
MyExecutor.java
package cc.mllt.eduxiancheng.slice; import ohos.eventhandler.EventHandler; import ohos.eventhandler.EventRunner; public class MyExecutor { /** * 切换任务到主线程执行 * @param runnable */ public static void runMain(Runnable runnable) { //切换到主线程 EventRunner runner = EventRunner.getMainEventRunner(); EventHandler eventHandler = new EventHandler(runner); //执行任务 eventHandler.postSyncTask(runnable); } /** * 在子线程执行任务 * @param runnable */ public static void runChild(Runnable runnable) { //开启一个新线程 EventRunner runner = EventRunner.create(true); EventHandler eventHandler = new EventHandler(runner); //执行任务 eventHandler.postTask(runnable,0,EventHandler.Priority.IMMEDIATE); } }
相关文章：【HarmonyOS】【多线程与并发】EventHandler - 萌狼蓝天 - 博客园 (cnblogs.com/mllt)