package com.accp.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.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
public class MyFilter extends HttpServlet implements Filter {
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
HttpServletRequest arg0 =(HttpServletRequest)request;
arg0.getSession().setAttribute("eurl", arg0.getRequestURI());
chain.doFilter(request, response);
/***
* 类需要继承HttpServlet 和 实现接口 Filter (过滤器)
* 添加一个doFilter 方法（右击选择 Source---- Override/mplement Methods）
* 定义HttpServletRequest,变量arg0 接收 request （需要转换类型）
* arg0.getSession().setAttribute("ErrorUrl", arg0.getRequestURI());
*/
}
public void init(FilterConfig filterConfig) throws ServletException {
// TODO Auto-generated method stub
}
}
------------------Web.Xml的配置
<filter>
<filter-name>names</filter-name>
<filter-class>com.accp.filter.MyFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>names</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
<error-page>
<error-code>500</error-code>
<location>/Error.jsp</location>
</error-page>
方法一、在Web.config中配置,具体做法为:在Web.config文件的System.web节中添加如下代码
1<pages>
2 <controls>
3 <add assembly="ServerControl" namespace="ServerControl" tagPrefix="sc"/>
4 </controls>
5</pages>
说明：assembly表示控件所在的程序集名称，nam ......
