Question

I pass parameters to the server line

"login=testAva4&nick=testAvaNick&social=vk&saurl=http://domain.example?param1=1&param2=2&param3=3&maurl=1"

waiting as the value saurl=”http://domain.example?param1=1&param2=2&param3=3″

but i get http://domain.example?param1=1 and param2=2 param3=3

From Eclipse debug

req->_parameters

{maurl=1, nick=testAvaNick, param2=2, saurl=http://domain.example?param1=1, param3=3, social=vk, login=testAva4}

Gets the parameters in the code like this:

public class AddProfileServlet extends PlacerServlet {

    //Add new profile method
    @Override
    protected void doPost(HttpServletRequest req, HttpServletResponse resp)
            throws ServletException, IOException {

        //Receive variables from URL
        String login = req.getParameter("login");
        String nick = req.getParameter("nick");
        String social = req.getParameter("social");
        String saurl = req.getParameter("saurl");

Answer 1

You should use URLEncoding on the saurl parameter.
Look at URLCodec at the commons codec enter link description here project.
I don’t think you will need to encode the entire parameters part, but just the value for this specific parameter.
You can encode a string using:

URLCodec codec = new URLCodec();
String encodedValue = codec.encode(valueToEncode);

And you should use encodedValue as the value passed to the saurl parameter.