How to get parameters out of a url encoded string (not a URL) in java

Question

I have a url encoded string that is returned from an API I am using. I want to do something request.getParameter("paramname") on the string. What I'm looking for is something like str.request.getParameter("paramname"). There's gotta be something like this right?

clarification the api returns something like: name1=val1&name2=val2&name3=val3

I know i could do a split on "&" and then go through each element but that seems stupid. Please advise. Thanks!

"There's gotta be something like this right?" unfortunately, no. Split and again. — Nishant
– Nishant, Commented Mar 22, 2011 at 18:28
Probable duplicate with: stackoverflow.com/questions/1667278/… . There are a couple of very good answers in there. — Aleadam
– Aleadam, Commented Mar 22, 2011 at 21:18

Shamit Verma · Accepted Answer · 2011-03-22 18:32:24Z

2

Use URLEncodedUtils from Apache httpclient library.

API : http://hc.apache.org/httpcomponents-client-ga/httpclient/apidocs/org/apache/http/client/utils/URLEncodedUtils.html

You will have to call this method to get name value pairs:

static List<NameValuePair>  parse(HttpEntity entity)
          Returns a list of NameValuePairs as parsed from an HttpEntity.

answered Mar 22, 2011 at 18:32

Shamit Verma

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Community · Accepted Answer · 2017-05-23 11:48:56Z

0

See this question

One answer there:

import org.eclipse.jetty.util.*;

MultiMap<String> params = new MultiMap<String>();
UrlEncoded.decodeTo("foo=bar&bla=blub", params, "UTF-8");

assert params.getString("foo").equals("bar");
assert params.getString("bla").equals("blub");

edited May 23, 2017 at 11:48

CommunityBot

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answered Mar 22, 2011 at 18:27

moritz

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6 Comments

Lye Over a year ago

that question doesn't seem to address my problem. I said I didn't want to do the splits.

Nishant Over a year ago

basically you're saying, "no".

moritz Over a year ago

There are a lot of answers, as for example using the apache libs or the jetty libs, then they will split and encode for you.

Nishant Over a year ago

uh oh, yeah you're right. there is this one can look into: hc.apache.org/httpcomponents-client-ga/httpclient/apidocs/org/…

Lye Over a year ago

apparently that package doesn't exist?

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