WSGI with python eve [Errno 32] Broken pipe... Ajax 调用

Question

我正在运行一个简单的 wsgi 服务器，

from run import app

if __name__ == "__main__":
    app.run(threaded=True, debug=True)

我正在使用 get 请求访问服务器，服务器返回 200 消息，但不返回任何数据。我收到以下错误消息

Error on request:
Traceback (most recent call last):
  File "/Library/Python/2.7/site-packages/werkzeug/serving.py", line 209, in run_wsgi
execute(self.server.app)
  File "/Library/Python/2.7/site-packages/werkzeug/serving.py", line 200, in execute
write(data)
  File "/Library/Python/2.7/site-packages/werkzeug/serving.py", line 175, in write
self.send_header('Server', self.version_string())
 File "/System/Library/Frameworks/Python.framework/Versions/2.7/lib/python2.7/BaseHTTPServer.py", line 401, in send_header
self.wfile.write("%s: %s\r\n" % (keyword, value))
IOError: [Errno 32] Broken pipe

我在几个地方读到过，使用 threading 选项应该可以绕过损坏的管道错误，但在我的情况下似乎没有帮助。有没有人有任何想法？

Flask 版本为 0.12.2。

!!!编辑！！！

所以我正在开发的页面的重点是从传单地图中获取用户定义的坐标并调用数据库，在本例中为 neo4j。查询运行良好，API 也运行良好，因为它在邮递员中运行良好。所以问题一定出在我的网络应用程序的某个地方。这是我的网页服务器应用程序。也许在 Ajax 调用中？

from flask import Flask, render_template
from flask_cors import CORS

app = Flask(__name__)
CORS(app)
@app.route('/demo')
def webMap():
    return render_template('demo3.html')

if __name__ == '__main__':
    app.config['DEBUG'] = True
    app.run(host='localhost', port=8090)

这里是 JS：

var map = L.map('map1').setView([51.506725, -0.076486], 12);

    L.tileLayer('https://api.tiles.mapbox.com/v4/{id}/{z}/{x}/{y}.png?access_token={accessToken}', {
    attribution: 'Map data &copy; <a href="http://openstreetmap.org">OpenStreetMap</a> contributors, <a href="http://creativecommons.org/licenses/by-sa/2.0/">CC-BY-SA</a>, Imagery © <a href="http://mapbox.com">Mapbox</a>',
    maxZoom: 18,
    id: 'mapbox.streets',
    accessToken: '*************************'
}).addTo(map);


//add start marker to map and delete old marker
var startmarker = null;

map.on('click', function (e) {
    if (startmarker !== null) {
        map.removeLayer(startmarker);
    }
     startmarker = L.marker(e.latlng, {
         title: "Start Point",
     }).addTo(map);
    startcoords = e.latlng.lng.toString() + "&" + e.latlng.lat.toString();
    startmarker.bindPopup("Start " + startcoords);
});


//add end marker to map and delete old marker

var endmarker = null;
map.on('contextmenu', function (e) {
    if (endmarker !== null) {
        map.removeLayer(endmarker);
    }
     endmarker = L.marker(e.latlng, {
         title: "End Point",
     }).addTo(map);
    endcoords = e.latlng.lng.toString() + "&" + e.latlng.lat.toString();
    endmarker.bindPopup("End " + endcoords);
    coords = startcoords+"&"+endcoords;
});

// choose query type, click button & Ajax call to API server

$("#button").click(function() {
    var val = $('input[name=query]:checked').val()
    if (val == 'route') {
        stuff = $.ajax({
            url: "http://127.0.0.1:5000/route&"+coords,
            type: "GET",
            dataType: "json" ,      
        })
        .done(function( json ) {
            alert(JSON.stringify(stuff));  // trying to JSON back will work out how to display it after I get some data returned 
        })
        .fail(function( xhr, status, errorThrown ) {
            alert( "Sorry, there was a problem!");
            console.log( "Error: " + errorThrown );
            console.log( "Status: " + status );
            console.dir( xhr );
        })
        .always(function( xhr, status ) {
            alert( "The request is complete!" );
        });

Answer 1

“Broken pipe 表示您的烧瓶进程想要与之通信的套接字或管道的另一端已经死亡。考虑到您正在与数据库交互，很可能数据库已经终止了连接，或者连接因其他原因死亡”(Source)