RequestFilter.java Source code

Introduction

Here is the source code for RequestFilter.java

Source

import javax.servlet.Filter;
import javax.servlet.FilterChain;
import javax.servlet.FilterConfig;
import javax.servlet.ServletContext;
import javax.servlet.ServletException;
import javax.servlet.ServletRequest;
import javax.servlet.ServletResponse;
import javax.servlet.http.HttpServletRequest;

public class RequestFilter implements Filter {

    private FilterConfig config;

    /** Creates new RequestFilter */
    public RequestFilter() {
    }

    public void init(FilterConfig filterConfig) throws ServletException {

        this.config = filterConfig;
    }

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws java.io.IOException, ServletException {

        ReqWrapper wrapper = null;
        ServletContext context = null;

        if (request instanceof HttpServletRequest)
            wrapper = new ReqWrapper((HttpServletRequest) request);

        /*
         * use the ServletContext.log method to log param names/values
         */
        if (wrapper != null) {
            context = config.getServletContext();
            context.log("Query: " + wrapper.getQueryString());
        }

        //continue the request, response to next filter or servlet
        //destination
        if (wrapper != null)
            chain.doFilter(wrapper, response);
        else
            chain.doFilter(request, response);
    }

    public void destroy() {
        /*
         * called before the Filter instance is removed from service by the web
         * container
         */
    }
}