用moment 处理时间戳，并计算时间的差值
项目使用nodejs写服务端，有个功能就是统计代理服务器流量，然后把统计的数据通过echarts渲染到页面。
当然统计数据这里用到了 定时器，在使用的是
var
schedule =
require(
'node-schedule');
有兴趣的同学可以在npm上搜一搜关于js定时任务的事，其实都大同小异，差不多都是运用corn表达式。
以下是我的 定时从代理服务器获取数据 并存库。
schedule.scheduleJob('*/15 * * * * * ', function () {
console.log('timer !!!!!!!!!!');
var dataObj1 = {};
iplists.forEach(function (ele, index) {
var req = http.request("http://" + ele + ":14567/stat", function (res) {
dataObj1.time = new Date(res.headers.date);
dataObj1.ip = req.getHeader("host").split(":")[0];
res.setEncoding('utf-8');
var tempData = '';
res.on('data', function (chunk) {
tempData += chunk;
var resultObj = JSON.parse(tempData);
dataObj1.flow = resultObj.bw15s;
var flow1 = new flowrank1({
ip: dataObj1.ip,
flow: dataObj1.flow,
time: new Date(dataObj1.time)
});
flow1.save(function (err, flow1) {
if (err) {
console.log(err);
return;
}
});
});
});
req.on("error", function (err) {
console.log(err);
});
req.end()
});
});现在来展示 需要根据前端传过来的 时间戳 来筛选出数据的代码，处理时间我用到了moment这个类库，基本包含了时间所有的处理方法。
总结以下moment的几个常用的函数：
moment().startOf('year'); // set to January 1st, 12:00 am this year
moment().startOf('month'); // set to the first of this month, 12:00 am
moment().startOf('quarter'); // set to the beginning of the current quarter, 1st day of months, 12:00 am
moment().startOf('week'); // set to the first day of this week, 12:00 am
moment().startOf('isoWeek'); // set to the first day of this week according to ISO 8601, 12:00 am
moment().startOf('day'); // set to 12:00 am today
moment().startOf('date'); // set to 12:00 am today
moment().startOf('hour'); // set to now, but with 0 mins, 0 secs, and 0 ms
moment().startOf('minute'); // set to now, but with 0 seconds and 0 milliseconds
moment().startOf('second'); // same as moment().milliseconds(0);moment().diff(Moment|String|Number|Date|Array);
moment().diff(Moment|String|Number|Date|Array, String);
moment().diff(Moment|String|Number|Date|Array, String, Boolean);var a = moment([2008, 9]);
var b = moment([2007, 0]);
a.diff(b, 'years'); // 1
a.diff(b, 'years', true); // 1.75moment().add(Number, String);
moment().add(Duration);
moment().add(Object);
var
moment =
require(
'moment');
var
starttime =
moment(
moment.
unix(
parseInt(
req.
query.
starttime)).
toDate());
console.
log(
"==============");
console.
log(
moment(
moment.
unix(
parseInt(
req.
query.
starttime)).
toDate()));
var
endtime =
moment(
moment.
unix(
parseInt(
req.
query.
endtime)).
toDate());
console.
log(
moment(
moment.
unix(
parseInt(
req.
query.
endtime)).
toDate()));
console.
log(
endtime.
diff(
starttime,
'hour'));
console.
log(
endtime.
diff(
starttime,
'months'));
console.
log(
endtime.
diff(
starttime,
'months'));
/**
* 查询小于1天的数据
*/
if(
endtime.
diff(
starttime,
'hour') <=
24) {
console.
log(
"flowrank1");
flowrank1.
find({
ip:req.
query.
ip,
time:{
$gt:moment.
unix(
req.
query.
starttime).
toDate(),
$lte:moment.
unix(
req.
query.
endtime).
toDate()}},{
_id:
0,
ip:
1,
flow:
1,
time:
1},
function(
err,
doc) {
if(
err) {
console.
log(
"err!!!!!")
console.
log(
err);
return
res.
end(
JSON.
stringify(
retcode.
operateDbErr));
}
var
result =
retcode.
res_ok;
result.
data =
doc;
console.
log(
doc)
res.
end(
JSON.
stringify(
result));
})
}
else
if(
endtime.
diff(
starttime,
'months') ==
0) {
console.
log(
"flowrank2!!!!");
flowrank2.
find({
ip:req.
query.
ip,
time:{
$gt:moment.
unix(
req.
query.
starttime).
toDate(),
$lte:moment.
unix(
req.
query.
endtime).
toDate()}},{
_id:
0,
ip:
1,
flow:
1,
time:
1},
function(
err,
doc) {
if(
err) {
console.
log(
"err!!!!!")
console.
log(
err);
return
res.
end(
JSON.
stringify(
retcode.
operateDbErr));
}
var
result =
retcode.
res_ok;
result.
data =
doc;
console.
log(
doc)
res.
end(
JSON.
stringify(
result));
})
}
else
if(
endtime.
diff(
starttime,
'months') >=
1) {
console.
log(
"in flowrank3");
flowrank3.
find({
ip:req.
query.
ip,
time:{
$gt:moment.
unix(
req.
query.
starttime).
toDate(),
$lte:moment.
unix(
req.
query.
endtime).
toDate()}},{
_id:
0,
ip:
1,
flow:
1,
time:
1},
function(
err,
doc) {
if(
err) {
console.
log(
"err!!!!!")
console.
log(
err);
return
res.
end(
JSON.
stringify(
retcode.
operateDbErr));
}
var
result =
retcode.
res_ok;
result.
data =
doc;
console.
log(
doc)
res.
end(
JSON.
stringify(
result));
})
}
else {
return
res.
end(
JSON.
stringify(
retcode.
res_err));
}