HttpServletResponse: sendRedirect(String arg0)

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

public class GoTo extends HttpServlet {

  public void doGet(HttpServletRequest req, HttpServletResponse res) throws ServletException,
      IOException {
    // Determine the site where they want to go
    String site = req.getPathInfo();
    String query = req.getQueryString();

    // Handle a bad request
    if (site == null) {
      res.sendError(res.SC_BAD_REQUEST, "Extra path info required");
    }

    // Cut off the leading "/" and append the query string
    // We're assuming the path info URL is always absolute
    String url = site.substring(1) + (query == null ? "" : "?" + query);

    // Log the requested URL and redirect
    log(url); // or write to a special file
    res.sendRedirect(url);
  }
}

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HttpServletResponse: sendRedirect(String arg0) : HttpServletResponse « javax.servlet.http « Java by API

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