有两种方法，但是这两种方法都是基于Struts2.0的
方法1：
在web点xml中插入
<filter> <filter-name>UserFilter</filter-name> <filter-class>xxx.xxx.xxx.UserValidateFilter</filter-class> </filter> <filter-mapping> <filter-name>UserFilter</filter-name> <url-pattern>/admin/*</url-pattern> </filter-mapping>
然后创建一个包（包名自取）遇上面的filter-class相互统一，在包内创建UserValidateFilter.java文件
package xxx.xxx.xxx.; import java.io.IOException; import javax.servlet.FilterChain; import javax.servlet.ServletException; import javax.servlet.ServletRequest; import javax.servlet.ServletResponse; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import javax.servlet.http.HttpSession; import org.apache.struts2.dispatcher.ng.filter.StrutsPrepareAndExecuteFilter; import xxx.xxx.xxx.Admin; public class UserValidateFilter extends StrutsPrepareAndExecuteFilter{ public void doFilter(ServletRequest req, ServletResponse resp, FilterChain chain) throws IOException, ServletException { HttpServletRequest request = (HttpServletRequest) req; HttpServletResponse response = (HttpServletResponse) resp; HttpSession session = request.getSession(); Admin admin = null; try{ admin = (Admin) session.getAttribute("admin"); }catch(java.lang.ClassCastException e){ response.sendRedirect("/xxxxx); return; } if(null == admin){ //request.getRequestDispatcher("/").forward(request, response); response.sendRedirect("/xxxxx"); return; }else{ super.doFilter(req, resp, chain); } } }
方法2：
在页面上的basePath下面添加这段代码，在页面上来判断用户是否是管理员，如果不是管理员，则跳转到login页面
