HarmonyOS 数据转换问题

可参考如下代码：

@Entry
@Component
struct Index {
  str: string = '{"state":0,"name":"xxxx"}';
  build() {
    Column() {
      Text('test').onClick(() => {
        const temp: person = JSON.parse(this.str)
        console.info(temp.name)
      })
    }
  }
}
class person {
  state: string = ''
  name: string = ''
  constructor(state: string, name: string) {
    this.state = state;
    this.name = name;
  }
}