java - How to handle special chars in parameter values?

Question

I've some issues with my Java Servlet if it's called with special chars (like ?, ? og ?) in the GET-parameters: http://localhost:8080/WebService/MyService?test=?st.

I than have this code in my doGet:

protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
    System.out.println(request.getParameterValues("test")[0]);
}

The messages printed in the console is: ??st.

The Web Service should be able to handle calls like this. How can I encode the parameter values in a proper way?

Answer 1

This needs to be configured at servet level. It's not clear which one you're using, so I'll give examples for Tomcat and Glassfish only.

Tomcat: add URIEncoding attribute to <Connector> element in /conf/server.xml:

<Connector ... URIEncoding="UTF-8">

Glassfish: add <parameter-encoding> to /WEB-INF/glassfish-web.xml (or sun-web.xml for older versions):

<parameter-encoding default-charset="UTF-8" />

See also:

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