HarmonyOS ArkTS的容器对象转化成JSON实践

HashMap对象转成json字符串，可以参考以下代码：

const map1: HashMap<string, string> = new HashMap();
map1.set("a", "avalue");
map1.set("b", "bValue");
const jsonObject: Record<string, Object> = {};
map1.forEach((value, key) => {
  if (key != undefined && value != undefined) {
    jsonObject[key] = value;
  }
})
const jsonString = JSON.stringify(jsonObject)
console.log('jsonString', jsonString)