<响应 [200]> 不可 JSON 序列化

Question

按照文档转换 API 示例尝试使用 Flask 将 msword 文档转换为文本，但它不起作用。

这是代码

import os, json, requests
from flask import Flask, jsonify
from watson_developer_cloud import DocumentConversionV1
app = Flask(__name__) #create flask instance
@app.route('/')
def Welcome():
    v = json.loads(os.getenv('VCAP_SERVICES'))
    svcName = 'document_conversion'
    svc = v[svcName][0]['credentials']
    url = svc['url']
    user = svc['username']
    password = svc['password']
    document_conversion = DocumentConversionV1(username=user, password=password,version='2015-12-15')
    # Example of retrieving html or plain text
    with open('./doc.docx', 'rb') as document:
        config = {'conversion_target': DocumentConversionV1.NORMALIZED_TEXT}    
        print(json.dumps(document_conversion.convert_document(document=document, config=config),indent=2))  
if __name__ == "__main__":
    port = os.getenv('VCAP_APP_PORT', '5000')
    app.run(host='0.0.0.0', port=int(port),debug=True)

这是运行时日志

File "/home/vcap/app/.heroku/python/lib/python3.5/site-packages/flask/app.py", line 1836, in __call__
return self.wsgi_app(environ, start_response)
File "/home/vcap/app/.heroku/python/lib/python3.5/site-packages/flask/app.py", line 1820, in wsgi_app
response = self.make_response(self.handle_exception(e))
File "/home/vcap/app/.heroku/python/lib/python3.5/site-packages/flask/app.py", line 1403, in handle_exception
reraise(exc_type, exc_value, tb)
File "/home/vcap/app/.heroku/python/lib/python3.5/site-packages/flask/_compat.py", line 33, in reraise
raise value
File "/home/vcap/app/.heroku/python/lib/python3.5/site-packages/flask/app.py", line 1817, in wsgi_app
response = self.full_dispatch_request()
File "/home/vcap/app/.heroku/python/lib/python3.5/site-packages/flask/app.py", line 1477, in full_dispatch_request
rv = self.handle_user_exception(e)
File "/home/vcap/app/.heroku/python/lib/python3.5/site-packages/flask/app.py", line 1381, in handle_user_exception
reraise(exc_type, exc_value, tb)
File "/home/vcap/app/.heroku/python/lib/python3.5/site-packages/flask/_compat.py", line 33, in reraise
raise value
File "/home/vcap/app/.heroku/python/lib/python3.5/site-packages/flask/app.py", line 1475, in full_dispatch_request
rv = self.dispatch_request()
File "/home/vcap/app/.heroku/python/lib/python3.5/site-packages/flask/app.py", line 1461, in dispatch_request
return self.view_functions[rule.endpoint](**req.view_args)
File "/home/vcap/app/welcome.py", line 39, in Welcome
        password = svc['password']
        document_conversion = DocumentConversionV1(username=user, password=password,version='2015-12-15')
        # Example of retrieving html or plain text
        with open('./doc.docx', 'rb') as document:
                config = {'conversion_target': DocumentConversionV1.NORMALIZED_TEXT}
                print(json.dumps(document_conversion.convert_document(document=document, config=config),indent=2))



if __name__ == "__main__":
        port = os.getenv('VCAP_APP_PORT', '5000')
File "/home/vcap/app/.heroku/python/lib/python3.5/json/__init__.py", line 237, in dumps
**kw).encode(obj)
File "/home/vcap/app/.heroku/python/lib/python3.5/json/encoder.py", line 201, in encode
chunks = list(chunks)
File "/home/vcap/app/.heroku/python/lib/python3.5/json/encoder.py", line 436, in _iterencode
o = _default(o)
File "/home/vcap/app/.heroku/python/lib/python3.5/json/encoder.py", line 180, in default
raise TypeError(repr(o) + " is not JSON serializable")

Answer 1

文档似乎已过时。返回的对象是一个响应对象，如请求库中所示。根据我的经验，您可以使用 .text 来获取表示 JSON 的字符串。我应该说，你可能必须使用 .json 表示来获取可以调用 .dumps（） 的东西。