[Java]sendRedirectリダイレクトのサンプル

2021年6月14日

書式
response.sendRedirect(xxx)
使用例

public class ResponseDemo extends HttpServlet {
  public void doGet(HttpServletRequest request, HttpServletResponse response)
    throws IOException, ServletException{

    response.setContentType("text/html; charset=UTF-8");
    PrintWriter out = response.getWriter();

    String md;
    String adr = "";
    md = request.getParameter("url");
      
      
    if (md == null || md.length() == 0){
       adr = "xxxx";
    }else{
       adr = "http://" + md;
    }

    response.sendRedirect(adr);
  }
}