Question

我试图从一系列HTML页面中抓取数据。对于访问，有一些参数包含查询。这些参数保存到json中。和儿子这样写的。

[
{"NM":"bla", "Code":"a12312"},
{"NM":"blabla", "Code":"a11231"},
{"NM":"dog", "Code":"b12311"},
...]

，下一个是parsing1.js的代码

var jsdom = require("jsdom");
var schCD = require('./ggElemCD.json');

for(i in schCD){
jsdom.env("http://www.~~skipped~~&HG_CD="+schCD[i].HG_CD+"~~skipped~~", ["http://code.jquery.com/jquery.js"],
       function(errors, window){
    var tObj= window.$('.TableType1 tbody tr:last td');
    console.log( "Name : "+schCD[i].HG_NM);
    console.log( "Code : "+schCD[i].HG_CD);

    var completeObj = {
        "HG_name": schCD[i],
        "HG_CD": schCD[i].HG_CD,
        "G1st_m" : tObj.get(0).innerHTML,
        "G1st_f" : tObj.get(1).innerHTML,
        "G2nd_m" : tObj.get(3).innerHTML,
        "G2nd_f" : tObj.get(4).innerHTML,
        "G3rd_m" : tObj.get(6).innerHTML,
        "G3rd_f" : tObj.get(7).innerHTML,
        "G4th_m" : tObj.get(9).innerHTML,
        "G4th_f" : tObj.get(10).innerHTML,
        "G5th_m" : tObj.get(12).innerHTML,
        "G5th_f" : tObj.get(13).innerHTML,
        "G6th_m" : tObj.get(15).innerHTML,
        "G6th_f" : tObj.get(16).innerHTML,
        "sp_m" : tObj.get(18).innerHTML,
        "sp_f" : tObj.get(19).innerHTML
    }
    console.log("value1 : "+completeObj.G1st_m);
    console.log("value2 : "+completeObj.G1st_f);
});
}

如果删除了for-syntax并且手动将HG_CD放入此代码，则它可以正常工作。但是，当我插入for-syntax时，节点打印出错误消息。

/Users/Snark/Dev/parsing/parsing1.js:8
    var tObj= window.$('.TableType1 tbody tr:last td');
                    ^

TypeError: Cannot read property '$' of undefined
    at Object.done (/Users/Snark/Dev/parsing/parsing1.js:8:18)
    at reportInitError (/Users/Snark/node_modules/jsdom/lib/jsdom.js:384:12)
    at /Users/Snark/node_modules/jsdom/lib/jsdom.js:220:9
    at Request._callback (/Users/Snark/node_modules/jsdom/lib/jsdom/browser/resource-loader.js:159:64)
    at self.callback (/Users/Snark/node_modules/jsdom/node_modules/request/request.js:198:22)
    at emitOne (events.js:77:13)
    at Request.emit (events.js:169:7)
    at Request.onRequestError (/Users/Snark/node_modules/jsdom/node_modules/request/request.js:820:8)
    at emitOne (events.js:77:13)
    at ClientRequest.emit (events.js:169:7)

Answer 1

您的问题与并发请求有关，因为您似乎拥有高数量的请求，您应该在向同一服务器发出另一个请求之前等待您的请求完成。以下是如何完成它using the async library：

Dim wshShell
Set wshShell = CreateObject("WScript.Shell")
wshShell.Run wshShell.ExpandEnvironmentStrings( "%SystemRoot%\system32\cmd.exe /c rd """ & fullTempName & """" ), 0

带循环的node-jsdom不起作用

1 个答案: