Question

问题

我需要的是从网页运行本地Python脚本，然后让网页获取该Python脚本的输出。到目前为止，我一直试图使用“POST”请求向该Python脚本（来自网页）提供输入参数。如何解决以下错误？

http://localhost:8000/ 501 (Unsupported method ('POST'))
http://localhost:8000/py/scripts/dnds.py 501 (Unsupported method ('POST'))

到目前为止......

我有以下文件系统（为清晰起见，最小）：

./vb-genes.html               # Webpage
./py/scripts/dnds.py          # Script takes input args from the webpage
./py/scripts/start_server.py  # Starts the Python server

在打开vb-genes.html网页之前，我执行Python服务器（来自。）：

python ./py/scripts/start_server.py

应该从http://localhost:8000和代码

提供

#!/usr/bin/python
from SimpleHTTPServer import SimpleHTTPRequestHandler
import BaseHTTPServer

class CORSRequestHandler (SimpleHTTPRequestHandler):
    def end_headers (self):
        self.send_header('Access-Control-Allow-Origin', '*')
        self.send_header('Access-Control-Allow-Methods', 'GET, POST, PUT, DELETE, OPTIONS')
        self.send_header('Access-Control-Allow-Headers', '*')
        SimpleHTTPRequestHandler.end_headers(self)

if __name__ == '__main__':
    BaseHTTPServer.test(CORSRequestHandler, BaseHTTPServer.HTTPServer)

然后我打开网页vb-genes.html，从那里我有三个重要的功能：

createCORSRequest

 // Create the XHR object: 
function createCORSRequest(method, url) {
  var xhr = new XMLHttpRequest();
  if ("withCredentials" in xhr) {
    // XHR for Chrome/Firefox/Opera/Safari.
    xhr.open(method, url, true);
  } else if (typeof XDomainRequest != "undefined") {
    // XDomainRequest for IE.
    xhr = new XDomainRequest();
    xhr.open(method, url);
  } else {
    // CORS not supported.
    xhr = null;
  }
  return xhr;
}

通过runPy（）生成CORS请求以运行本地Python脚本：

// Make the actual CORS request.
function makeCorsRequest(qry_seq, ref_seq) {
    var url = 'http://localhost:8000/';  //not entirely sure what to put here, the 
    var xhr = createCORSRequest('POST', url);
    if (!xhr) {
        alert('CORS not supported');
        return;
    }
    // Response handlers. @xhr-body
    xhr.onload = function(qry_seq, ref_seq) {
        // Run the dnds.py calculator
        runPy(qry_seq, ref_seq);    # <--- AJAX request , see: 3.
    };
    xhr.onerror = function() {
        alert('Woops, there was an error making the request.');
    };
    xhr.send();
}

runPy（）是一个ajax请求，用于运行本地python脚本：dnds.py

// dnds.py calculator
function runPy(qry_seq, ref_seq) {
    $.ajax({
        type: 'POST', 
        url: 'http://localhost:8000/py/scripts/dnds.py', 
        dataType: 'text',
        success: function(response){
            output = response;
            alert(output);
        }
    }).done(function(data){
        console.log(data);
        alert(data);
    });
};

要重新讨论这个问题......我为什么会这样做？：

http://localhost:8000/ 501 (Unsupported method ('POST'))
http://localhost:8000/py/scripts/dnds.py 501 (Unsupported method ('POST'))

如何使用CORS请求'POST'到简单的Python服务器？

0 个答案: