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@Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { /* resp.setHeader("Location","/response_war/img"); resp.setStatus(302); */ resp.sendRed...

public class ImageServlet extends HttpServlet { @Override protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { //如何让浏览器3秒自动刷新一次 resp.setHeader("refresh","3"); //在内存中创

public class FileServlet extends HttpServlet { @Override protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException { } @Override protected void doGet(HttpServletRequest req, HttpServl

EB容器在启动时，它会为每个Web应用程序都创建一个对应的ServletContext，它代表当前Web应用。并且它被所有客户端共享。 作用 共享数据 设置数据 import javax.servlet.ServletContext; import javax.servlet.ServletException; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.s