HarmonyOS 鸿蒙Next：hashmap如何转json格式

核心代码如下：

let str: string = '';

for (let i = 0; i < channels.length; i++) {

  let obj5: Record<string, string> = {};

  channels[i].forEach((value, key) => {

    if (key != undefined && key != null) {

      obj5[key] = value;

    }

  })

  str += JSON.stringify(obj5) + ','
}

Logger.info("{" + '"channelMap":[' + str + "]}")

完整代码如下：

import { Logger } from '../commen.util/Logger';

@Entry
@Component
struct HuoBanDeHapToJson {

  aboutToAppear(): void {
    this.createBindJson()
  }

  createBindJson(): string {

    let channels: Array<Map<string, string>> = [];

    let channelCp: Map<string, string> = new Map();
    channelCp.set("name", "1013")
    channelCp.set("version", "1")

    let obj1: Record<string, string> = {};
    channelCp.forEach((value, key) => {

      if (key != undefined && key != null) {

        obj1[key] = value;

      }

    })

    let channelLittlePay: Map<string, string> = new Map();
    channelLittlePay.set("name", "01");
    channelLittlePay.set("version", "1");

    let obj2: Record<string, string> = {};
    channelLittlePay.forEach((value, key) => {

      if (key != undefined && key != null) {

        obj2[key] = value;

      }

    })

    let channelWeiChat: Map<string, string> = new Map();
    channelWeiChat.set("name", "02");
    channelWeiChat.set("version", "1");

    let obj3: Record<string, string> = {};
    channelWeiChat.forEach((value, key) => {

      if (key != undefined && key != null) {

        obj3[key] = value;

      }

    })

    let bill99: Map<string, string> = new Map();
    bill99.set("name", "04");
    bill99.set("version", "1");

    let obj4: Record<string, string> = {};
    bill99.forEach((value, key) => {

      if (key != undefined && key != null) {

        obj4[key] = value;

      }

    })

    channels.push(channelCp);
    channels.push(channelLittlePay);
    channels.push(channelWeiChat);
    channels.push(bill99);

    let channelMap: Map<string, Array<Map<string, string>>> = new Map();
    channelMap.set("channels", channels);

    let str: string = ''

    for (let i = 0; i < channels.length; i++) {

      let obj5: Record<string, string> = {};

      channels[i].forEach((value, key) => {

        if (key != undefined && key != null) {

          obj5[key] = value;

        }

      })

      str += JSON.stringify(obj5) + ','
    }

    Logger.info("{" + '"channelMap":[' + str + "]}")

    return JSON.stringify(channelMap);
  }

  build() {}
}