el&use bead&getProperty&setProperty

Author: HelloListen

src/servletsAndJSP/CookieTest.java

@@ -0,0 +1,44 @@
+package servletsAndJSP;
+
+import javax.servlet.RequestDispatcher;
+import javax.servlet.ServletException;
+import javax.servlet.http.Cookie;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.IOException;
+import java.io.PrintWriter;
+
+/**
+ * Created by zhangbin on 16/3/1.
+ */
+public class CookieTest extends HttpServlet {
+    @Override
+    public void doPost(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
+        response.setContentType("text/html");
+        String name = request.getParameter("username");
+        Cookie cookie = new Cookie("username", name);
+        cookie.setMaxAge(30 * 60);
+        response.addCookie(cookie);
+
+        RequestDispatcher view = request.getRequestDispatcher("cookieresult.jsp");
+        view.forward(request, response);
+    }
+
+    @Override
+    public void doGet(HttpServletRequest request, HttpServletResponse response) throws IOException, ServletException {
+        response.setContentType("text/html");
+        PrintWriter out = response.getWriter();
+
+        Cookie cookies[] = request.getCookies();
+        if (cookies != null) {
+            for (Cookie c : cookies) {
+                if (c.getName().equals("username")) {
+                    String userName = c.getValue();
+                    out.println("Hello " + userName);
+                    break;
+                }
+            }
+        }
+    }
+}