ResponseTimerFilter.java Source code

Introduction

Here is the source code for ResponseTimerFilter.java

Source

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;

public class ResponseTimerFilter implements Filter {
    protected FilterConfig config;

    public void init(FilterConfig config) throws ServletException {
        this.config = config;
    }

    public void destroy() {
    }

    public void doFilter(ServletRequest request, ServletResponse response, FilterChain chain)
            throws ServletException, IOException {
        long startTime = System.currentTimeMillis();
        chain.doFilter(request, response);
        long elapsed = System.currentTimeMillis() - startTime;
        String name = "servlet";
        if (request instanceof HttpServletRequest) {
            name = ((HttpServletRequest) request).getRequestURI();
        }

        config.getServletContext().log(name + " took " + elapsed + " ms");
    }
}<filter><filter-name>Timing Filter</filter-name><filter-class>com.omh.filters.ResponseTimerFilter</filter-class></filter>

<filter-mapping><filter-name>
Timing Filter</filter-name><url-pattern>/*</url-pattern>
                                        </filter-mapping>
                                            
                                        */