?? firstfilter.java
字號:
package filter;
import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.*;
//import dao.AccessBean;
import po.Toperator;
/**
* @author 趙昌峻
*
* TODO 判斷用戶是否有進入系統的權限
*/
public class FirstFilter implements Filter {
public void init(FilterConfig cong) {
// do nothing
}
public void doFilter(ServletRequest srequest, ServletResponse sresponse,
FilterChain chain) {
try {
HttpServletRequest requst = (HttpServletRequest) srequest;
HttpServletResponse response = (HttpServletResponse) sresponse;
HttpSession session = requst.getSession();
//從session從取出操作員對象,如果為空說明沒有登錄,將其轉到登錄頁面.
Toperator operator = (Toperator) session.getAttribute("operator");
if (operator == null) {
response.sendRedirect("/chinamobile/index.html");
} else {
chain.doFilter(srequest, sresponse);
}
} catch (Exception e) {
e.printStackTrace();
}
}
public void destroy() {
//do nothing
}
}
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