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package 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.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import javax.servlet.http.HttpSession;
public class newFilter implements Filter{
public void destroy(){
}
public void doFilter(ServletRequest request,ServletResponse response,
FilterChain filterChain) throws IOException,ServletException{
HttpServletRequest myrequest=(HttpServletRequest)request;
HttpServletResponse myresponse=(HttpServletResponse)response;
HttpSession session=myrequest.getSession();
if(session.getAttribute("name")==null){//判断是否有用户登陆
myresponse.sendRedirect("Newss/login.jsp");
}else{
filterChain.doFilter(request,response);
}
}
public void init(FilterConfig arg0) throws ServletException{
}
}
package 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;
public class chinaFilter implements Filter{
public void destroy(){
}
public void doFilter(ServletRequest request,ServletResponse response,
FilterChain filterChain) throws IOException,ServletException{
request.setCharacterEncoding("UTF-8");
response.setCharacterEncoding("UTF-8");
filterChain.doFilter(request, response);
}
public void init(FilterConfig arg0) throws ServletException{
}
}