尝试使用Python请求将xml文件发送到OpenStreetMap Overpass API

Question

I have an .xml request that can succesfully retrieve data from the OpenStreetMap Overpass API. 我有一个.xml请求，可以成功地从OpenStreetMap Overpass API检索数据。

<?xml version="1.0" encoding="UTF-8"?>
<osm-script>
<query type="node">
    <has-kv k="name" v="Bethesda"/>
    <has-kv k="network" v="Washington Metro"/>
</query>
<query type="way">
    <around radius="800"/>
    <has-kv k="building"/>
</query>
<union>
    <item/>
    <recurse type="down"/>
</union>
<print/>
</osm-script>

All I'm trying (and failing) to do now is send this xml via the Python requests library (i'm open to other python solutions). 我现在正在尝试（并且失败）的是通过Python请求库发送这个xml（我对其他python解决方案开放）。 I send the request below: 我发送以下请求：

files = {'file': ('Bethesda.xml', open('Bethesda.xml', 'rb'))}
r = requests.post('http://overpass-api.de/api/interpreter', data=files)
print r.text

but get the following error message: 但得到以下错误消息：

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
"http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd">
<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
  <meta http-equiv="content-type" content="text/html; charset=utf-8" lang="en"/>
  <title>OSM3S Response</title>
</head>
<body>

<p>The data included in this document is from www.openstreetmap.org. The data is made available under ODbL.</p>
<p><strong style="color:#FF0000">Error</strong>: line 1: parse error: Unknown type "file" </p>
<p><strong style="color:#FF0000">Error</strong>: line 1: parse error: An empty query is not allowed </p>
<p><strong style="color:#FF0000">Error</strong>: line 1: parse error: Unknown type "=" </p>
<p><strong style="color:#FF0000">Error</strong>: line 1: parse error: An empty query is not allowed </p>
<p><strong style="color:#FF0000">Error</strong>: line 1: parse error: Unknown type "Bethesda" </p>
<p><strong style="color:#FF0000">Error</strong>: line 1: parse error: ';' expected - '&' found. </p>
<p><strong style="color:#FF0000">Error</strong>: line 2: parse error: Unexpected end of input. </p>

Which indicates the request successfully reaches the Overpass API and gets back an xml file, but it seems like the xml request wasn't successfully transferred. 这表示请求成功到达Overpass API并获取了一个xml文件，但似乎没有成功传输xml请求。 I've tried a few variations but can't do much better than this. 我尝试了一些变化，但不能比这更好。 Clearly, I'm not much with Python... 显然，我对Python并不多...

Answer 1

You want the xml to be the body of the POST. 您希望xml成为POST的主体。 When you pass in the dict, requests turns it into a url query string that isn't encoded correctly and isn't what the api wants anyway. 当您传入dict时，请求将其转换为未正确编码的url查询字符串，而不是api想要的。 Its very annoying in my opinion. 在我看来它非常烦人。 Query strings and bodies are different beasts - they shouldn't be smooshed into a single parameter and automagically guestimated. 查询字符串和正文是不同的野兽 - 它们不应该被压缩成单个参数并自动地估计。

This works: 这有效：

import requests
r = requests.post('http://overpass-api.de/api/interpreter',
    data=open('Bethesda.xml', 'rb'))
print(r.text)

尝试使用Python请求将xml文件发送到OpenStreetMap Overpass API

问题描述

1 个解决方案

解决方案1
4 已采纳 2013-05-18 16:57:51

尝试使用Python请求将xml文件发送到OpenStreetMap Overpass API

问题描述

1 个解决方案

解决方案1 4 已采纳 2013-05-18 16:57:51

解决方案1
4 已采纳 2013-05-18 16:57:51