package yangfan.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 EncodingFilter implements Filter {
private FilterConfig config;
String encoding="ISO8859_1";
public void destroy() {
config=null;
}
public void doFilter(ServletRequest request, ServletResponse response,
FilterChain chain) throws IOException, ServletException {
request.setCharacterEncoding(encoding);
chain.doFilter(request,response);
}
public void init(FilterConfig config) throws ServletException {
this.config=config;
String s=config.getInitParameter("encoding");
if(s!=null){
encoding=s;
}
}
}