getQueryString returns empty string when queryParameter has no value

Question

I have URL like http://example.com/foo/?locale=en_US&xyz, when i do a getQueryString() on the URL i get back an empty String

I am doing "request.getQueryString()" on the URL

Maybe you are doing a POST (like in a form) or you URL encoded the entire URL so ? is actually %3F (sometimes shown URL decoded in some browsers). — Joop Eggen
– Joop Eggen, Commented Oct 4, 2017 at 7:25

user8654079 · Accepted Answer · 2017-10-04 07:18:28Z

1

getQuery() works for me:

     String str = "http://example.com/foo/?locale=en_US&xyz";
     URL url = new URL(str);
     System.out.println(url.getQuery());

Output: locale=en_US&xyz

answered Oct 4, 2017 at 7:18

user8654079

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2 Comments

Thanks for the answer , but this did not work for me.

Very odd... What output did you get? Which Java version do you have?

Tnadev · Accepted Answer · 2017-10-04 07:28:33Z

1

Doc says

Returns: a String containing the query string or null if the URL contains no query string. The value is not decoded by the container.

The value is not decoded by the container.

String queryString = URLDecoder.decode(request.getQueryString(), "UTF-8");

This will make getQueryString() work.

Recommend to get params using getParameter()

answered Oct 4, 2017 at 7:28

Tnadev

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