?? adminfilter.java
字號:
package com.yhcms.manage.admin.biz;
import java.io.IOException;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.RequestDispatcher;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpSession;
import org.apache.log4j.Logger;
import com.yhcms.manage.admin.bean.AdminUser;
/**
* <p>Title:系統(tǒng)管理過濾器</p>
* <li>用來檢查在用戶在執(zhí)行操作系統(tǒng)后臺(tái)時(shí),session是否失效.</li>
* <li>如果用戶沒有登錄或者session失效,則跳轉(zhuǎn)到登錄界面.</li>
* <br><b>CopyRight: yyhweb[由由華網(wǎng)]</b>
* @author stephen
* @version YH-2.0
*/
public class AdminFilter implements Filter {
protected FilterConfig filterConfig;
public void destroy() {
filterConfig = null;
}
public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain) throws IOException, ServletException {
// 從session取得當(dāng)前用戶
HttpSession session = ((HttpServletRequest) request).getSession();
AdminUser curUser = (AdminUser) session.getAttribute("yhcmsuser");
if (curUser == null) {
Logger yhlog = Logger.getLogger(AdminFilter.class.getName());
yhlog.info("Admin user session invalidate!");
RequestDispatcher rd = request.getRequestDispatcher("/admin/Login.html");
rd.forward(request, response);
return;
}
chain.doFilter(request, response);
}
public void init(FilterConfig filterConfig) throws ServletException {
this.filterConfig = filterConfig;
}
}
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