过滤器第一次使用

xiachaochao · xiachaochao · commit e24d16101b2b · 2017-05-19T16:26:45.000+08:00
diff --git a/JavaWeb/WebContent/WEB-INF/web.xml b/JavaWeb/WebContent/WEB-INF/web.xml
@@ -16,7 +16,7 @@
   <servlet-mapping>
     <servlet-name>ServletDemo</servlet-name>
     <url-pattern>/ServletDemo</url-pattern>
-    <url-pattern>/ServletDemo1</url-pattern><!--测试多个url-pattern访问同一个资源         -->
+    <url-pattern>/ServletDemo1</url-pattern>
   </servlet-mapping>
   <servlet>
     <servlet-name>MyLoginServletDemo</servlet-name>
diff --git a/JavaWeb/src/com/crazyjava/filter/SimpleFilter.java b/JavaWeb/src/com/crazyjava/filter/SimpleFilter.java
@@ -0,0 +1,51 @@
+package com.crazyjava.filter;
+
+import java.io.IOException;
+import javax.servlet.Filter;
+import javax.servlet.FilterChain;
+import javax.servlet.FilterConfig;
+import javax.servlet.ServletException;
+import javax.servlet.ServletRequest;
+import javax.servlet.ServletResponse;
+import javax.servlet.annotation.WebFilter;
+
+/**
+ * Servlet Filter implementation class SimpleFilter
+ */
+@WebFilter("/SimpleFilter")
+public class SimpleFilter implements Filter {
+
+	/**
+	 * @see Filter#init(FilterConfig)
+	 */
+	public void init(FilterConfig fConfig) throws ServletException {
+		// TODO Auto-generated method stub
+		String initParam=fConfig.getInitParameter("ref"); 
+	}
+    /**
+     * Default constructor. 
+     */
+    public SimpleFilter() {
+        // TODO Auto-generated constructor stub
+    }
+
+	/**
+	 * @see Filter#destroy()
+	 */
+	public void destroy() {
+		// TODO Auto-generated method stub
+	}
+
+	/**
+	 * @see Filter#doFilter(ServletRequest, ServletResponse, FilterChain)
+	 */
+	public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
+		// TODO Auto-generated method stub
+		// place your code here
+
+		// pass the request along the filter chain
+		chain.doFilter(request, response);
+	}
+
+
+}
