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
crazycodeboy/hijson: HiJson is a lightweight JSON parsing library that can be used for HarmonyOS, Android, and Java (github.com)
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)
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