filterencoding.java

sql+struts+jsp 提供考试的一般需求

package exambk;
import javax.servlet.Filter;
import javax.servlet.FilterConfig;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.FilterChain;
import java.io.IOException;

public class filterEncoding implements Filter{
    protected String encoding;
    protected FilterConfig filterConfig;
    public void init(FilterConfig filterConfig) throws ServletException {
        this.filterConfig=filterConfig;
        this.encoding=filterConfig.getInitParameter("encoding");
    }

    public void doFilter(ServletRequest request, ServletResponse response,
                         FilterChain chain) throws IOException,ServletException {
        HttpServletRequest hrequest=(HttpServletRequest)request;
        hrequest.setCharacterEncoding(encoding);
    }

    public void setFilterConfig(FilterConfig filterConfig){
        this.filterConfig=filterConfig;
    }

    public void destroy() {
        this.filterConfig=null;
    }
}