(1)I designed a API application. Some arguments in API expected it will receive Boolean datas.
Example:
def hello(request):
# request.POST.viewitems()
# {u'is_logined': u'False', u'user': u'hello'}
user_name = request.POST.get("user", "") # "hello"
is_logined = request.POST.get("is_logined", "") # "False"
This is my sending:
url = "http://127.0.0.1:8000/test"
aaa= {"user": "hello",
"is_logined": False}
res = requests.post(url, data=aaa)
I suppose I get the argument is a boolean data but it's Unicode format.
Anyone know why it is Unicode format.
(2)I have another question. If java program will access my API, I know boolean in java is false and true.
When my API receive the boolean data, is it still false and true of Unicode string?
When you use the POST method, in which the browser bundles up the form data, encodes it for transmission, sends it back to the server, and then receives its response.
I guess you use form to send data. The data type of sending provides Text and File formats. So, this is why you receive is Text. If you know a app it's name postman, you can try it.
Not an straightforward answer to you question, but this is one of the reasons why you should use forms to process posted data. Through forms api you will have the "right" python object type.
Other reasons are mainly security.
Related
I am writing a program (python Python 3.5.2) that uses a HTTPSConnection to get a JSON object as a response. I have it working using some example code, but am not sure where a method comes from.
My question is this: In the code below, the decode('utf-9') method doesn't exist in the documentation at https://docs.python.org/3.4/library/http.client.html#http.client.HTTPResponse under "21.12.2. HTTPResponse Objects". How would I know that the return value from the method "response.read()" has the method "decode('utf-8')" available?
Do Python objects inherit from a base class like C# objects do or am I missing something?
http = HTTPSConnection(get_hostname(token))
http.request('GET', uri_path, headers=get_authorization_header(token))
response = http.getresponse()
print(response.status, response.reason)
feed = json.loads(response.read().decode('utf-8'))
Thank you for your help.
The read method of the response object always returns a byte string (in Python 3, which I presume you are using as you use the print function). The byte string does indeed have a decode method, so there should be no problem with this code. Of course it makes the assumption that the response is encoded in UTF-8, which may or may not be correct.
[Technical note: email is a very difficult medium to handle: messages can be made up of different parts, each of which is differently encoded. At least with web traffic you stand a chance of reading the Content-Type header's charset attribute to find the correct encoding].
I'm trying to send a POST request with params that contain null values and None just gets ignored. Besides that, I'm unsure about whether or not False is sent as false.
For example:
requests.post("http://myurl.com/address/", data = {"parentValue":{"value1":False,"value2":None}})
and the required params server-side are
{"parentValue":{"value1":false, "value2":null}}
tl;dr: I need false and null on the server side as params from a POST request, how do I send them using Python requests?
rather than using data=simplejson.dumps({"parentValue":{"value1":False,"value2":None}}) you should use
json = {"parentValue":{"value1":False,"value2":None}}
As roganjosh suggested, json.dumps() on the object needed, works.
I'm newbie in python and trying to parse data in my application using these lines of codes
json_str = request.body.decode('utf-8')
py_str = json.loads(json_str)
But I'm getting this error on json.loads
Expecting value: line 1 column 1 (char 0)
this is json formatted data that I send from angular app (Updated)
Object { ClientTypeId: 6, ClientName: "asdasd", ClientId: 0, PhoneNo: "123", FaxNo: "123", NTN: "1238", GSTNumber: "1982", OfficialAddress: "sads", MailingAddress: "asdasd", RegStartDate: "17-Aug-2016", 15 more… }
these are the values that I get in json_str
ClientTypeId=5&ClientName=asdasd&ClientId=0&PhoneNo=123&FaxNo=123&NTN=123&GSTNumber=12&OfficialAddress=adkjh&MailingAddress=adjh&RegStartDate=09-Aug-2016&RegEndDate=16-Aug-2016&Status=1&CanCreateUser=true&UserQuotaFor=11&UserQuotaType=9&MaxUsers=132123&ApplyUserCharges=true&ApplyReportCharges=true&EmailInvoice=true&BillingType=1&UserCharges=132&ReportCharges=123&MonthlyCharges=123&BillingDate=16-Aug-2016&UserSessionId=324
I don't know what's wrong in it.. can anyone mention what's the mistake is??
Your data is not JSON-formatted, not even the one you included in your updated answer. Your data is a JavaScript-object, not an encoded string. Please note the "N" in JSON: Notation -- it is a format inspired from how data is written in JavaScript code, but runtime JavaScript data is not represented in JSON. The "JSON" you pasted is how your browser represents the object to you, it is not proper JSON (that would be {"ClientTypeId": 6, ...} -- note the quotes around the property name).
When sending this data to the server, you have to encode it. You think you are sending it JSON-encoded, but you aren't. You are sending it "web form encoded" (data of type application/x-www-form-urlencoded).
Now either you have to learn how to send the data in JSON format from Angular, or use the correct parsing routine in Python: urllib.parse.parse_qs. Depending on the library you are using, there might be a convenience method to access the data as well, as this is a common use case.
I am trying to use the requests library in Python to push data (a raw value) to a firebase location.
Say, I have urladd (the url of the location with authentication token). At the location, I want to push a string, say International. Based on the answer here, I tried
data = {'.value': 'International'}
p = requests.post(urladd, data = sjson.dumps(data))
I get <Response [400]>. p.text gives me:
u'{\n "error" : "Invalid data; couldn\'t parse JSON object, array, or value. Perhaps you\'re using invalid characters in your key names."\n}\n'
It appears that they key .value is invalid. But that is what the answer linked above suggests. Any idea why this may not be working, or how I can do this through Python? There are no problems with connection or authentication because the following works. However, that pushes an object instead of a raw value.
data = {'name': 'International'}
p = requests.post(urladd, data = sjson.dumps(data))
Thanks for your help.
The answer you've linked is a special case for when you want to assign a priority to a value. In general, '.value' is an invalid name and will throw an error.
If you want to write just "International", you should write the stringified-JSON version of that data. I don't have a python example in front of me, but the curl command would be:
curl -X POST -d "\"International\"" https://...
Andrew's answer above works. In case someone else wants to know how to do this using the requests library in Python, I thought this would be helpful.
import simplejson as sjson
data = sjson.dumps("International")
p = requests.post(urladd, data = data)
For some reason I had thought that the data had to be in a dictionary format before it is converted to stringified JSON version. That is not the case, and a simple string can be used as an input to sjson.dumps().
Is there a way to easily extract the json data portion in the body of a POST request?
For example, if someone posts to www.example.com/post with the body of the form with json data, my GAE server will receive the request by calling:
jsonstr = self.request.body
However, when I look at the jsonstr, I get something like :
str: \r\n----------------------------8cf1c255b3bd7f2\r\nContent-Disposition: form-data;
name="Actigraphy"\r\n Content-Type: application/octet-
stream\r\n\r\n{"Data":"AfgCIwHGAkAB4wFYAZkBKgHwAebQBaAD.....
I just want to be able to call a function to extract the json part of the body which starts at the {"Data":...... section.
Is there an easy function I can call to do this?
there is a misunderstanding, the string you show us is not json data, it looks like a POST body. You have to parse the body with something like cgi.parse_multipart.
Then you could parse json like answered by aschmid00. But instead of the body, you parse only the data.
Here you can find a working code that shows how to use cgi.FieldStorage for parsing the POST body.
This Question is also answered here..
It depends on how it was encoded on the browser side before submitting, but normally you would get the POST data like this:
jsonstr = self.request.POST["Data"]
If that's not working you might want to give us some info on how "Data" was encoded into the POST data on the client side.
you can try:
import json
values = 'random stuff .... \r\n {"data":{"values":[1,2,3]}} more rnandom things'
json_value = json.loads(values[values.index('{'):values.rindex('}') + 1])
print json_value['data'] # {u'values': [1, 2, 3]}
print json_value['data']['values'] # [1, 2, 3]
but this is dangerous and takes a fair amount of assumptions, Im not sure which framework you are using, bottle, flask, theres many, please use the appropriate call to POST
to retrieve the values, based on the framework, if indeed you are using one.
I think you mean to do this self.request.get("Data") If you are using the GAE by itself.
https://developers.google.com/appengine/docs/python/tools/webapp/requestclass#Request_get
https://developers.google.com/appengine/docs/python/tools/webapp/requestclass#Request_get_all