nodejs异步实现分页查询--async

-- data={pageNum:2}
let pageNums  =[];
for(let i=0;i<data.pageNum;i++){
    pageNums.push({pageNum:i+1});
}
async.mapSeries(pageNums,function (pageNum,callback) {
    console.log(pageNums+' ----- '+ pageNum);
    let reqPath = '/projects/list?pageNum=' + pageNum.pageNum + '&pageSize=' + data.pageSize+'&projectId='+pid;
    network.get(reqPath).then(function (data1) {
        data1 = JSON.parse(data1);
        if (data1 && data1.data && data1.status === 200) {
            data1.data.data.forEach(function (project) {
                projects.push(project);
            })
        }
        callback(null,{pageNum:pageNum.pageNum});
    },function (err) {
        callback(err,null);
    });
},function (err,data) {
    if(err){
        console.log(err);
        return ;
    }
    projects.forEach(function (project) {
        let value = [];
        cellData.forEach(function (cell) {
            let flag = false;
            for(let key in project){
                if(key === cell){
                    value.push(project[key]);
                    flag = true;
                    break;
                }
            }
            if(!flag){
                value.push('');
            }
        });
        result.push(value);
    });
    _event.emit('getInfoCompleted');

});