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<!-- LoginFilter -->
<filter>
<filter-name>LoginFilter</filter-name>
<filter-class>com.web.LoginFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>LoginFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
package com.web;
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 LoginFilter implements Filter {
private String encoding;
@Override
public void init(FilterConfig filterconfig) throws ServletException {
encoding = "utf-8";
}
@Override
public void destroy() {
}
@Override
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
request.setCharacterEncoding(encoding);
response.setCharacterEncoding(encoding);
HttpServletRequest req=(HttpServletRequest)request;
HttpServletResponse res=(HttpServletResponse)response;
HttpSession session=req.getSession();
if(session.getAttribute("jobNumber")!=null){
chain.doFilter(request, response);
}else{
res.sendRedirect(req.getContextPath()+"/login.jsp");
}
}
}