Java 过滤器

来源：互联网发布：c语言什么书好编辑：程序博客网时间：2024/06/05 23:45

web.xml文件中

  <filter>  <filter-name>filterTest1</filter-name>  <filter-class>filter.FilterTest</filter-class>  <init-param>      <param-name>encoding</param-name>      <param-value>utf8</param-value>  </init-param></filter><filter-mapping>  <filter-name>filterTest1</filter-name>  <url-pattern>/index.jsp</url-pattern></filter-mapping>

//FilterTest.java

public class FilterTest implements Filter {          private FilterConfig conf = null;    public void destroy() {        // TODO Auto-generated method stub                  System.out.println("filter destroy");    }    public void doFilter(ServletRequest arg0, ServletResponse arg1,            FilterChain arg2) throws IOException, ServletException {        // TODO Auto-generated method stub        System.out.println("in filter");        arg2.doFilter(arg0, arg1);        System.out.println(arg0.getParameter("encoding"));    }    public void init(FilterConfig arg0) throws ServletException {        // TODO Auto-generated method stub        conf = arg0;        System.out.println("init filter");        System.out.println("Param: " + conf.getInitParameter("encoding"));    }}

本文出自 “just2012” 博客，请务必保留此出处http://just2012.blog.51cto.com/7435167/1348408

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