关于react.js:Promise-异步获取本地json文件

//异步获取本地json文件handleJson=(name)=>{    return new Promise((resolve,reject)=>{        axios.get(`/border/${name}.json`).then(            function(data){                resolve(data)            }        )    })}//循环变量获取对应json文件handleBorderData=()=>{    var {districts}=this.state;    _.forEach(districts,(item)=>{        var name=item.codeName        this.handleJson(name).then((data)=>{            gzData[item.code]=data.data            console.log('gzData',gzData[item.code][0])        })            })}async componentDidMount(){    await this.handleBorderData();    }