connection.setRequestProperty and excplicitly writing to the urloutputstream are they same?
-
23-09-2019 - |
Question
URL url = new URL("http://www.example.com/comment");
HttpURLConnection connection = (HttpURLConnection) url.openConnection();
connection.setDoOutput(true);
connection.setRequestMethod("POST");
Is
connection.setRequestProperty(key, value);
the same as
OutputStreamWriter writer = new OutputStreamWriter(connection.getOutputStream());
writer.write("key=" + value);
writer.close();
?
If not, please correct me.
Solution
No, it is not. The URLConnection#setRequestProperty()
sets a request header. For HTTP requests you can find all possible headers here.
The writer
just writes the request body. In case of POST
with urlencoded content, you'd normally write the query string into the request body instead of appending it to the request URI like as in GET
.
That said, connection.setDoOutput(true);
already implicitly sets the request method to POST
in case of a HTTP URI (because it's implicitly required to write to the request body then), so doing an connection.setRequestMethod("POST");
afterwards is unnecessary.
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