Question

我有一个带有rest-api路径的数组：

var paths = ['path1','path2','path3'];

我想创建一个包含每个路径结果的数组。在这种情况下，我改为使用“http://www.google.com/index.html”代替“路径”

exports.test = function(req, res){

  var paths = ['path1','path2','path3'];

  var resultArr = [];
  async.each(paths, function(path, cb){

    console.log('collecting data from: ' + path);
    http.get('http://www.google.com/index.html', function(result){

      resultArr.push(result);
      console.log('Done collecting data from: ' + path);
      cb();
    });

  }, function(){
    console.log('Done collecting data from all paths');
    res.status(200).send('hello');
  });
};

此日志：

Starting server at 127.0.0.1:5000
collecting data from: path1
collecting data from: path2
collecting data from: path3
Done collecting data from: path2
Done collecting data from: path1
Done collecting data from: path3
Done collecting data from all paths
GET /test 304 128.752 ms - -

它不是在等待呼叫完成。我希望逐个获得系列结果。我做错了什么？

Answer 1

将每个更改为 eachSeries 。

exports.test = function(req, res){

  var paths = ['path1','path2','path3'];

  var resultArr = [];
  async.eachSeries(paths, function(path, cb){

    console.log('collecting data from: ' + path);
    http.get('http://www.google.com/index.html', function(result){

      resultArr.push(result);
      console.log('Done collecting data from: ' + path);
      cb();
    });

  }, function(){
    console.log('Done collecting data from all paths');
    res.status(200).send('hello');
  });
};

此日志：

collecting data from: path1
Done collecting data from: path1
collecting data from: path2
Done collecting data from: path2
collecting data from: path3
Done collecting data from: path3
Done collecting data from all paths

使用与http.get的异步，节点js

1 个答案: