下載csv檔案，其中包含帶有請求的javascript點擊下載-有解無憂

我正在嘗試從此處下載 csv 檔案：單擊“Acesse todos os negócios realizados até o momento”后的下載 csv 檔案，其中包含帶有請求的 javascript 點擊下載

onclick 就是這樣：<a href="#" onclick="carregarDownloadArquivo('')">

carregarDownloadArquivo（我不懂java，試圖只提取js里面的這個特定函式）：

function carregarDownloadArquivo(n){var t;
t=n!=null&&n!=""?n:getParameterByName("data")==null?"":getParameterByName("data");
$("#divloadArquivo").show();
$.ajax({url:"/NegociosRealizados/Registro/DownloadArquivoDiretorio?data=" t}).then(function(t,i,r){var u;
if(t!="null"&&t!=""){var f=convertBase64(t),e=window.navigator.userAgent,o=e.indexOf("MSIE ");
(n==null||n=="")&&(n=retornaDataHoje());
u=n "_NEGOCIOSBALCAO.CSV";
o>0||!!navigator.userAgent.match(/Trident.*rv\:11\./)?DownloadArquivoIE(u,f,r.getAllResponseHeaders()):DownloadArquivo(u,f,r.getAllResponseHeaders())}$("#divloadArquivo").hide()})}

了解 carregardownload 的額外功能：

function DownloadArquivoIE(n,t,i){var r=new Blob(t,{type:i});
navigator.msSaveBlob(r,n)}function DownloadArquivo(n,t,i){var r=new Blob(t,{type:i});
saveAs(r,n)}function getParameterByName(n,t){t||(t=window.location.href);
n=n.replace(/[\[\]]/g,"\\$&");
var r=new RegExp("[?&]" n "(=([^&#]*)|&|#|$)"),i=r.exec(t);
return i?i[2]?decodeURIComponent(i[2].replace(/\ /g," ")):"":null}

不太確定 ajax 和發送呼叫。另外我不知道他們的代碼是如何下載 csv 檔案的

uj5u.com熱心網友回復：

嘗試解碼來自服務器的 base64 編碼回應：

import base64
import requests

url = "https://bvmf.bmfbovespa.com.br/NegociosRealizados/Registro/DownloadArquivoDiretorio?data="

t = base64.b64decode(requests.get(url).text)
print(t.decode("utf-8"))

印刷：

Data/Hora da ultima atualizacao: 11/11/2022 16:38:20
Instrumento Financeiro;Emissor;Codigo IF;Quantidade Negociada;Preco Negocio;Volume Financeiro R$;Taxa Negocio;Origem Negocio;Horario Negocio;Data Negocio;Cod. Identificador do Negocio;Cod. Isin;Data Liquidacao
DEB;STAGENEBRA;MSGT23;2200;980,96524400;2158123,54;7,8701;Pre-registro - Voice;16:34:56;11/11/2022;#97441063;BRMSGTDBS050;12/11/2022
CRA;VERTSEC;CRA022006N5;306;972,49346900;297583,00;,0000;Pre-registro - Voice;16:34:49;11/11/2022;#97441055;BRVERTCRA2S9;11/11/2022
CRI;VIRGOSEC;21L0823062;96;1012,81900600;97230,62;,0000;Pre-registro - Voice;16:33:21;11/11/2022;#97441034;BRIMWLCRIAF2;11/11/2022
CRI;VIRGOSEC;21L0823062;356;1012,81900600;360563,57;,0000;Pre-registro - Voice;16:32:55;11/11/2022;#97441028;BRIMWLCRIAF2;11/11/2022
COE;;IT5322K6C2H;10;1000,00000000;10000,00;;Registro;16:31:52;11/11/2022;#2022111113338428;;11/11/2022

...and so on.

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