Problem In Decoding Parameters In Get Method, Jsp

Here how jsp page is called. eventMap.jsp?venue=%C4%B0ndigo This is the line in eventMap.jsp which I get venue parameter: var venue='<%= URLDecoder.decode(request.getParameter(

Solution 1:

Decoding of the GET query string is handled by the servletcontainer, not by the Servlet API. It's unclear which servletcontainer you're using, so I can't give a detailed answer. In for example Tomcat, it's configureable by URIEncoding attribute in the <Connector> element in /conf/server.xml.

<ConnectorURIEncoding="UTF-8">

Configuration is similar in other servletcontainers.

Then you can remove the unnecessary URLDecoder line. The getParameter() already returns the decoded parameter.

See also:

• Unicode - How to get the characters right? - JSP/Servlet request

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Unrelated to the actual problem, I strongly recommend to replace scriptlets by EL and use JSTL fn:escapeXml to prevent XSS attacks.

var lat = ${fn:escapeXml(param.lat)};
var lng = ${fn:escapeXml(param.lng)};
var venue = "${fn:escapeXml(param.venue)}";

See also:

• How to avoid Java code in JSP files?

Solution 2:

What does your JSP header look like?

Make sure it says something like:

<%@ page contentType="text/xhtml;charset=UTF-8"%>

You can also check HTTP headers you are getting when invoking your JSP. Make sure your response is UTF-8 encoded.

Solution 3:

Maybe this method is overriding the wrong encoding: request.setCharacterEncoding("UTF-8")

Probably you should check the encoding to be used in your JSP header or in the request header.

Charlie