我有一个页面，需要定期更新文件位置，以便链接指向新文件。尝试通过使用requests.

我已经通过“应用程序密码”插件设置了身份验证，并且我能够从api中为所讨论的页面下载json。我有一个包含新文件位置的预构建字符串，可以使用了。我将页面内容，特别是“呈现”版本，提取为字符串。我做了一个快速replace() 在两个已知标记之间的字符串上(<h4>) 然后将修改后的“呈现”页面内容重新加载回json，并将其上载回端点，再次使用requests().

当这一切都说了又做了，我没有从脚本中得到任何错误，状态代码为200。。。但页面上没有任何变化。

此外，我在错误日志中发现以下内容：

[2019年8月21日00:12:51 UTC]PHP警告：在/home1/example/public\\u html/wp includes/rest api/class wp rest请求中为foreach（）提供的参数无效。php在线778

不太清楚那是什么意思，但我想这不好。

import base64, json, requests

user = \'admin\'
pythonapp = \'QUDM PYFn xfyK 9Hhe Ayf2 hk6k\'
url = \'https://example.com/wp-json/wp/v2\'

data_string = user + \':\' + pythonapp

token = base64.b64encode(data_string.encode())

headers = {\'Authorization\':\'Basic \' + token.decode(\'utf8\')}

newsletterURL = \'http://www.example.com/wp-content/uploads/2019/08/lorem-ipsum.pdf\'
oldH4 = \'<h4><a href="http://www.example.com/wp-content/uploads/2019/08/NCWGC-2019-8.pdf" target="_blank" rel="noreferrer noopener" aria-label=" (opens in a new tab)">Click here to download the newsletter!!!</a></h4>\'
newH4 = \'<h4><a href="\' + newsletterURL + \'" target="_blank" rel="noreferrer noopener" aria-label=" (opens in a new tab)">Click here to download the newsletter!!!</a></h4>\'

#  Download the current Newsletter page
r = requests.get(url + \'/pages/6\', headers=headers)

tmp = r.json()

非常确定到目前为止的代码按照预期/预期工作；显然，它经过了一些修改，成为了一个独立的示例，而不是更大脚本的一部分。

oldPageContent = tmp[\'content\'][\'rendered\']
# print(oldPageContent.partition(\'</h4>\')[0])

newPageContent = oldPageContent.replace(oldH4, newH4)
# print(newPageContent.partition(\'</h4>\')[0])

tmp[\'content\'][\'rendered\'] = newPageContent
# print(tmp[\'content\'][\'rendered\'].partition(\'</h4>\')[0])

r = requests.post(url + \'/pages/6\', headers=headers, json=tmp)

# print(json.loads(r.content.decode(\'utf8\'))[\'content\'][\'rendered\'].partition(\'</h4>\')

在这里，我试图替换正文内容中的特定URL，重新组合内容，并将整个内容上传回

"content": {
    "rendered": "\\n<h4><a href=\\"http://www.example.com/wp-content/uploads/2019/08/NCWGC-2019-8.pdf\\" target=\\"_blank\\" rel=\\"noreferrer noopener\\" aria-label=\\" (opens in a new tab)\\">Click here to download the newsletter!!!</a></h4>\\n\\n\\n\\n<p>Submissions for the newsletter are always welcome. Space is somewhat limited so keep \\u2019em short and sweet!",
    "protected": false
}

这是我试图从页面内容中提取、更新和上载的特定字段的一个示例。

我在想也许我应该json.dumps/loads 获取[\'content\'][\'rendered\'] 而不仅仅是r.json()? 虽然当我打印出结果字符串时，它们看起来确实像是对的。。。

有没有关于通过REST api更新页面的想法/建议？还是我完全错了？

Update:

在@SallyCJ的出色帮助下，这是我最终得到的东西的最终形式，以防它能帮助其他人：

<小时>

import base64, json, re, requests

user = \'admin\'
pythonapp = \'QUDM PYFn xfyK 9Hhe Ayf2 hk6k\'
url = \'https://example.com/wp-json/wp/v2\'

data_string = user + \':\' + pythonapp

token = base64.b64encode(data_string.encode())

headers = {\'Authorization\':\'Basic \' + token.decode(\'utf8\')}

#  Temporary URL for the sake of testing
newsletterURL = \'http://www.example.com/wp-content/uploads/2019/08/lorem-ipsum.pdf\'

#  Download the current Newsletter page
r = requests.get(url + \'/pages/6\', headers=headers)

#  Extract the actual page content from all the rest of the API data
data = r.json()
content = data[\'content\'][\'rendered\']

#  Find the URL for the download in \'content\', and replace it with the new URL
regex = r"(http(s)?)://(www.)?(example.com\\/wp-content/uploads\\/).+(pdf)"
newContent = re.sub(regex, newsletterURL,content)

#  Create a new data payload using the updated \'content\'
data = {"content": newContent}

#  Upload it back to the site
r = requests.post(url + \'/pages/6\', headers=headers, json=data)

curl -d "title=New%20Title!&content=New%20Content%3F" -X POST https://example.com/wp-json/wp/v2/pages/9 --user "admin:QUDM PYFn xfyK 9Hhe Ayf2 hk6k"

curl -H "Content-Type: application/json" -d "{\\"title\\":\\"New Title!\\",\\"content\\":\\"New Content?\\"}" -X POST https://example.com/wp-json/wp/v2/pages/9 --user "admin:QUDM PYFn xfyK 9Hhe Ayf2 hk6k"

tmp[\'content\'][\'rendered\'] = newPageContent

tmp = { \'content\': newPageContent }

import base64, json, requests

user = \'admin\'
pythonapp = \'QUDM PYFn xfyK 9Hhe Ayf2 hk6k\'
url = \'https://example.com/wp-json/wp/v2\'

data_string = user + \':\' + pythonapp
token = base64.b64encode( data_string.encode() )
headers = { \'Authorization\': \'Basic \' + token.decode( \'utf8\' ) }

# Create a Page.
data = { \'title\': \'Testing from Python\' }
r = requests.post( url + \'/pages/\', headers=headers, json=data )
data = r.json()
page_id = str( data[\'id\'] )
print \'Page created. ID: \' + page_id

# Retrieve the Page.
r = requests.get( url + \'/pages/\' + page_id, headers=headers )
data = r.json()
title = data[\'title\'][\'rendered\']
print \'Page #\' + page_id + \' retrieved. The title is: \' + title

# Update the Page.
data = { \'content\': \'New content here\' }
r = requests.post( url + \'/pages/\' + page_id, headers=headers, json=data )
data = r.json()
content = data[\'content\'][\'rendered\']
print \'Page #\' + page_id + \' updated. Content set to: \' + content

# Delete the Page.
r = requests.delete( url + \'/pages/\' + page_id, headers=headers )
data = r.json()
print \'Page #\' + page_id + \' moved to the Trash. (Well, it should be...)\'
print \'The Page "status" is \' + data[\'status\']