javascript - 循环访问 http 方法数组

Question

继续我之前的post ，我遇到了另一个问题:我试图插入一个数组(包含 GET、POST 等)作为 http 方法属性的值，对其进行循环，并测试多个请求。但是通过数组，我得到了 5 个元素(请求方法)并出现 501 错误。我已经尝试了几种解决方案，包括针对数组的特定位置，但没有一个有效......任何帮助将不胜感激。代码:

var http = require('http');


const options = {
    hostname: 'www.google.com',
    protocol: 'http:',
    method: ['GET', 'POST', 'DELETE', 'PUT', 'STARDUST']
}


var callback = function (response) {
    var exportJson = JSON.stringify(response.headers);
    var arrayData = [];
    response.on('data', function (data) {
        arrayData += data;

    });

    response.on('end', function () {
        console.log('THE DATA IS ' + arrayData);


    });

}

var x;
var req;

function test() {

    x = options.method;  
    console.log(x[0]); //This works, I can read the GET

    for (var i = 0; i < x.length; i++) {

        req = http.request(x, callback);
        //req.x[0]; The console says that doesn't know the 0 property...
        req.x;
        req.end();

    }
}

test();

编辑:控制台错误:

<h2>HTTP Error 500.19 - Internal Server Error</h2>
  <h3>The requested page cannot be accessed because the related configuration da
ta for the page is invalid.</h3>

Answer 1

这里有一个错误:

x = options.method;  
console.log(x[0]); //This works, I can read the GET
for (var i = 0; i < x.length; i++) {
   req = http.request(x, callback);
   //req.x[0]; The console says that doesn't know the 0 property...
   req.x;
   req.end();
}

x 是一个数组，您尝试将数组作为参数传递给 request 方法，但文档声明它必须是键值对对象或字符串。那么你试图获取 req 的字段 x，但该字段不存在，因此出现异常。

https://nodejs.org/api/http.html#http_http_request_options_callback