1
我在for循环中做异步调用,我知道响应即将到来的异步,但我怎样才能得到我的反应总是在同一顺序。这里是我的代码:异步回调for循环响应不按顺序
setInterval(function() {
callback = function (response)
{
var temp2 = '';
var str = "";
test = [];
console.log('STATUS: ' + response.statusCode);
response.setEncoding('utf8');
response.on('data', function (chunk)
{
str += chunk;
});
response.on('end', function()
{
console.log("end found");
temp2 = JSON.parse(str);
for (var i in temp2['build'])
{
test.push(temp2['build'][i]['id']);
var req3 = http.request({
host: host, // here only the domain name
auth: auth,
port: 8111,
path: '/httpAuth/app/rest/builds/id:' + test[i] + '/statistics/', // the rest of the url with parameters if needed
method: 'GET', // do GET
headers: { "Accept": "application/json" }
}, callback2);
req3.end();
}
});
}
var req4 = http.request(options4, callback);
req4.end();
callback2 = function (response) {
//console.log('STATUS: ' + response.statusCode);
//console.log('HEADERS: ' + JSON.stringify(response.headers));
response.setEncoding('utf8');
var str2 = "";
response.on('data', function (chunk) {
str2 += chunk;
});
response.on('end', function() {
points.push(parseInt(JSON.parse(str2)["property"][2]["value"]));
});
j++;
if (j == test.length) {
var sumTotal = 0;
var sumThree = 0;
var status = '';
for (var i in points) {
sumTotal += points[i];
}
var averageTotal = parseInt(Math.round(sumTotal/points.length));
for (var i = 0; i < 3; i++) {
sumThree += points[i];
}
var averageThree = parseInt(Math.round(sumThree/3));
/*if(averageThree>averageTotal)
{
status='warning';
}
else
{
status='ok';
}*/
console.log('average: ' + averageThree + ' average 100 ' + averageTotal + ' status ' + status);
//send_event('speed', {current: averageThree/*, status: status*/, last: averageTotal});
j = 0;
points = [];
}
}
}, 15 * 1000);
所以我的问题是我怎么能肯定我的反应“点的”始终以相同的顺序。我试着发送变种我到回调函数,但不能让它工作
编辑: 改变格式。 第一回调的输出:
{
"count":100,
"nextHref":"/httpAuth/app/rest/builds/?locator=buildType:bt2,count:100,status:SUCCESS,start:100",
"build":[
{
"id":17469,
"number":"5075",
"status":"SUCCESS",
"buildTypeId":"bt2",
"startDate":"20140224T183152+0100",
"href":"/httpAuth/app/rest/builds/id:17469",
"webUrl":"http://x.x.x.x:8111/viewLog.html?buildId=17469&buildTypeId=bt2"
},
{
"id":17464,
"number":"5074",
"status":"SUCCESS",
"buildTypeId":"bt2",
"startDate":"20140224T165758+0100",
"href":"/httpAuth/app/rest/builds/id:17464",
"webUrl":"http://x.x.x.x:8111/viewLog.html?buildId=17464&buildTypeId=bt2"
},
{
"id":17461,
"number":"5073",
"status":"SUCCESS",
"buildTypeId":"bt2",
"startDate":"20140224T161852+0100",
"href":"/httpAuth/app/rest/builds/id:17461",
"webUrl":"http://x.x.x.x:8111/viewLog.html?buildId=17461&buildTypeId=bt2"
},
此输出包含100个项目。从这个输出中我得到了id号,并用这个id数组发出了一个新的请求。这个新的回调给了我构建持续时间,但问题是因为这是异步发生的,我得到的响应不是来自最新的构建,而是来自第一响应。所以我的问题是我怎样才能以正确的顺序得到这些生成速度数组
您目前的和预期的输出在这里很有用。此外,您的代码的格式将使它更易于阅读。 **注意'for..in'代表一个对象的属性,而不是一个数组迭代器(就像在C#或类似的代码中一样)。**我看到你使用了很多,并考虑['Array.prototype.forEach )'](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Array/forEach)在迭代数组时(或者只是一个普通的'for-loop',而不是' for..in'循环) – clay