[JBoss Seam] - Re: Additional filter outside Seam-filter messes up encoding
by Toby451
Here it is (I can't see that it interfers with encoding in any way).
Application is being deployed on JBoss 4.2.1.GA.
| import org.apache.commons.lang.StringUtils;
|
| 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 java.io.IOException;
| import java.util.ArrayList;
| import java.util.Collections;
| import java.util.List;
| import java.util.Map;
|
| /**
| * TimingFilter messures requests times and should be placed
| * outside (in the filter/servlet chain) the thing to be meassured.
| */
| public class TimingFilter implements Filter {
|
| private FilterConfig config;
| private static final int MAX_ARRAYITEMS_PRINTED = 5;
|
| public void init(FilterConfig config) throws ServletException {
| this.config = config;
| }
|
| public void doFilter(ServletRequest req, ServletResponse res, FilterChain chain) throws IOException, ServletException {
| String name = "<non http request>";
| String method = "?";
| if (req instanceof HttpServletRequest) {
| HttpServletRequest servletRequest = (HttpServletRequest) req;
| name = servletRequest.getRequestURI();
| method = servletRequest.getMethod();
| }
| Map requestMap = req.getParameterMap();
|
| long t0 = System.nanoTime();
| chain.doFilter(req, res);
| long dt = System.nanoTime() - t0;
|
| config.getServletContext().log(
| StringUtils.leftPad(formatTime(dt), 10) +
| StringUtils.leftPad(method + " ", 6) +
| StringUtils.rightPad(name, 26) +
| StringUtils.rightPad(prettify(requestMap), 100)
| );
| }
|
|
| /**
| * Will format a nanosecond value as milliseconds with one decimal.
| */
| private String formatTime(long ns) {
| String ms = String.valueOf(ns / 100000);
| int pointPos = ms.length() - 1;
| return ms.substring(0, pointPos) + "." + ms.substring(pointPos) + " ms";
| }
|
|
| /**
| * Will convert the map into something readable
| */
| private String prettify(Map map) {
| StringBuilder sb = new StringBuilder();
|
| //noinspection unchecked
| List<String> keys = new ArrayList(map.keySet());
| Collections.sort(keys);
|
| for (String key : keys)
| sb.append(key).append("=").append(prettifyValue(map.get(key))).append(" ");
|
| return sb.length() > 0 ? sb.toString() : "<no parameters>";
| }
|
|
| /**
| * Will loop through array values and give pretty output.
| * (i.e. some widgets (grouped checkboxes) give multiple values)
| */
| private String prettifyValue(Object o) {
|
| // Non arrays we just convert to String.
| if (!(o instanceof Object[]))
| return o.toString();
|
| // For arrays we build a comma separated list.
| StringBuilder sb = new StringBuilder("");
| Object[] arr = (Object[]) o;
| int itemsToPrint = Math.min(arr.length, MAX_ARRAYITEMS_PRINTED);
| for (int i = 0; i < itemsToPrint; i++)
| sb.append(arr).append(i < (itemsToPrint - 1) ? ", " : "");
|
| if (itemsToPrint == 1)
| return sb.toString();
| else
| return "[" + sb.toString() + "]";
| }
|
| public void destroy() {
| config = null;
| }
| }
|
|
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18Â years, 7Â months