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request.getSession().setAttribute("searchItemListSession", form.getSearchItemList());
request.getSession().removeAttribute();
package filterPackage;
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.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
public class SecurityFilter implements Filter {
public void destroy() {
// TODO Auto-generated method stub
}
public void doFilter(ServletRequest req, ServletResponse res,
FilterChain chain) throws IOException, ServletException {
HttpServletRequest request = (HttpServletRequest) req;
HttpServletResponse response = (HttpServletResponse) res;
if (request.getSession().getAttribute("userIdSession") == null) {
response.sendRedirect(request.getContextPath() + "/login.jsp");
}
chain.doFilter(request, response);
}
public void init(FilterConfig arg0) throws ServletException {
// TODO Auto-generated method stub
}
}
<filter>
<filter-name>securityFilter</filter-name>
<filter-class>filterPackage.SecurityFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>securityFilter</filter-name>
<url-pattern>/page/*</url-pattern> <!--page是一个包含几个jsp页面的文件夹-->
</filter-mapping>
<session-config>
<session-timeout>30</session-timeout>
</session-config>