设置重定向不缓存

response.setHeader(“Cache-Control”, “no-cache, no-store, must-revalidate”);
response.setHeader(“Pragma”, “no-cache”);response.setHeader(“Expires”, “0”);response.sendRedirect(newURL);

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

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

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