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httpdStatistics statsこのクラスがあり、そのクラスの外部（別のクラス）に、そのクラスで作成されたオブジェクトをエクスポートしたいと思います。これを作るための最良の方法はどれですか？

package org.w3c.jigsaw.status ;

import java.util.Date;

import org.w3c.tools.resources.Attribute;
import org.w3c.tools.resources.AttributeHolder;
import org.w3c.tools.resources.AttributeRegistry;
import org.w3c.tools.resources.FramedResource;
import org.w3c.tools.resources.IntegerAttribute;
import org.w3c.tools.resources.Resource;

import org.w3c.tools.resources.store.ResourceStoreManager;

import org.w3c.www.http.HTTP;
import org.w3c.www.http.HttpMessage;

import org.w3c.jigsaw.frames.HTTPFrame;

import org.w3c.jigsaw.http.Reply;
import org.w3c.jigsaw.http.Request;
import org.w3c.jigsaw.http.httpd;
import org.w3c.jigsaw.http.httpdStatistics;

import org.w3c.jigsaw.html.HtmlGenerator;

/**
 * This class exports the server statistics.
 * It makes available a bunch of various parameters about the current
 * server, and uses the Refresh meta-tag (as the ThreadStat) to 
 * make them redisplay.
 * <p>This would benefit from being an applet.
 */

public class StatisticsFrame extends HTTPFrame {
    private static int REFRESH_DEFAULT = 5;

    /**
     * Attribute index - Our refresh interval.
     */
    protected static int ATTR_REFRESH = -1 ;

    static {
    Attribute a   = null ;
    Class     cls = null ;
    try {
        cls = Class.forName("org.w3c.jigsaw.status.StatisticsFrame");
    } catch (Exception ex) {
        ex.printStackTrace() ;
        System.exit(1) ;
    }
    // The refresh interval attribute:
    a = new IntegerAttribute("refresh"
                 , new Integer(5)
                 , Attribute.EDITABLE) ;
    ATTR_REFRESH = AttributeRegistry.registerAttribute(cls, a) ;
    }

    static String time_tbl = ("<table border=\"1\" class=\"time\">"
                  + "<caption>Request processing times"
                  + "</caption><tr>"
                  + "<th>min"
                  + "<th>avg"
                  + "<th>max"
                  + "</tr><tr>") ;

    static String dyn_time_tbl = ("<table border=\"1\" class=\"time\">"
                  + "<caption>Dynamic request processing times"
                  + "</caption><tr>"
                  + "<th>min"
                  + "<th>avg"
                  + "<th>max"
                  + "</tr><tr>") ;

    static String sta_time_tbl = ("<table border=\"1\" class=\"time\">"
                  + "<caption>Static request processing times"
                  + "</caption><tr>"
                  + "<th>min"
                  + "<th>avg"
                  + "<th>max"
                  + "</tr><tr>") ;

    public void registerResource(FramedResource resource) {
    super.registerOtherResource(resource);
    }

    /**
     * Get the current set of statistics.
     * Display the collected statistics in an HTML table.
     * @param request The request to process.
     */

    public Reply get (Request request) {
    HtmlGenerator g = new HtmlGenerator("Statistics") ;
    int refresh = getInt(ATTR_REFRESH, REFRESH_DEFAULT);
    if (refresh > 0) {
        g.addMeta("Refresh", Integer.toString(refresh));
    }
    addStyleSheet(g);
    // Dump the statistics:
    httpdStatistics stats = ((httpd)getServer()).getStatistics() ;
    // Uptime:
    g.append("<h1>Server Statistics</h1>");
    long start_time = stats.getStartTime();
    long uptime     = (System.currentTimeMillis() - start_time) / 1000;
    g.append("<p>Your server was started on <span class=\"date\">");
    g.append(new Date(start_time).toString());
    long duptime = uptime / (3600L*24L);
    long htemp   = uptime % (3600L*24L);
    long huptime = htemp / 3600L;
    long mtemp   = htemp % 3600L;
    long muptime = mtemp / 60L;
    long suptime = mtemp % 60L;
    g.append("</span>\n<p>It has now been running for <span "+
         "class=\"uptime\">");
    g.append(Long.toString(duptime));
    g.append(" days, ");
    g.append(Long.toString(huptime));
    g.append(" hours, ");
    g.append(Long.toString(muptime));
    g.append(" minutes and ");
    g.append(Long.toString(suptime));
    g.append(" seconds.</span>\n");
    // Hits and bytes:
    long  nb_hits      = stats.getHitCount();
    long  dyn_hits     = stats.getDynamicHitCount();
    long  static_hits  = stats.getStaticHitCount();
    float static_pcent = 0;
    float dyn_pcent    = 0;
    if (nb_hits > 0) {
        static_pcent = ((float) static_hits / (float) nb_hits) * 100;
        dyn_pcent = ((float) dyn_hits / (float) nb_hits) * 100;
    }
    g.append("<ul><li>hits: ", Long.toString(nb_hits));
    g.append("  <ul>\n    <li>static: ",Long.toString(static_hits));
    g.append(" (", Float.toString(static_pcent));
    g.append("%)</li>\n    <li>dynamic: ", Long.toString(dyn_hits));
    g.append(" (", Float.toString(dyn_pcent));
    g.append("%)</li>\n  </ul>\n");
    long bytes = stats.getEmittedBytes();
    long kbytes = bytes / 1024;
    long mbytes = kbytes / 1024;
    long gbytes = mbytes / 1024;
        long tbytes = gbytes / 1024;
    if (tbytes != 0) {
        g.append("</li>\n<li>bytes: ", Long.toString( tbytes),"TB, ");
        g.append(Long.toString(gbytes % 1024), "GB, ");
        g.append(Long.toString(mbytes % 1024), "MB, ");
        g.append(Long.toString(kbytes % 1024), "KB, ");
        g.append(Long.toString(bytes % 1024));
    } else if (gbytes != 0) {
        g.append("</li>\n<li>bytes: ", Long.toString(gbytes), "GB, ");
        g.append(Long.toString(mbytes % 1024), "MB, ");
        g.append(Long.toString(kbytes % 1024), "KB, ");
        g.append(Long.toString(bytes % 1024));
    } else if (mbytes != 0) {
        g.append("</li>\n<li>bytes: ", Long.toString(mbytes), "MB, ");
        g.append(Long.toString(kbytes % 1024), "KB, ");
        g.append(Long.toString(bytes % 1024));
    } else if (kbytes != 0) {
        g.append("</li>\n<li>bytes: ", Long.toString(kbytes), "KB, ");
        g.append(Long.toString(bytes % 1024));
    } else {
        g.append("</li>\n<li>bytes: ", Long.toString(bytes));
    }
    // avg hit/sec
    float avghits = 0;
    float avghitsday = 0;
    if (uptime > 0) {
        avghits = ((float) nb_hits) / ((float) uptime);
        avghitsday = ((float) nb_hits * 86400) / ((float) uptime); 
    }
    g.append("</li>\n<li>Average hits per second: ");
    g.append(Float.toString(avghits));
    g.append("</li>\n<li>Average hits per day: ");
    g.append(Integer.toString((int) avghitsday));
    // avg bytes/hit
    long avgbph;

    if (nb_hits > 0) {
        avgbph = bytes / nb_hits;
    } else {
        avgbph = 0;
    }
    kbytes = avgbph / 1024;
    mbytes = kbytes / 1024;
    gbytes = mbytes / 1024;
    if (gbytes != 0) {
        g.append("</li>\n<li>Average bytes per hit: ");
        g.append(Long.toString(gbytes), "GB, ");
        g.append(Long.toString(mbytes % 1024), "MB, ");
        g.append(Long.toString(kbytes % 1024), "KB, ");
        g.append(Long.toString(avgbph % 1024));
    } else if (mbytes != 0) {
        g.append("</li>\n<li>Average bytes per hit: ");
        g.append(Long.toString(mbytes), "MB, ");
        g.append(Long.toString(kbytes % 1024), "KB, ");
        g.append(Long.toString(avgbph % 1024));     
    } else if (kbytes != 0) {
        g.append("</li>\n<li>Average bytes per hit: ");
        g.append(Long.toString(kbytes), "KB, ");
        g.append(Long.toString(avgbph % 1024));
    } else {
        g.append("</li>\n<li>Average bytes per hit: ",
             Long.toString(avgbph));
    }
    // avg throughput
    long avgbps = 0;
    if (uptime > 0) {
        avgbps = bytes / uptime;
    }
    kbytes = avgbps / 1024;
    mbytes = kbytes / 1024;
    gbytes = mbytes / 1024;
    if (gbytes != 0) {
        g.append("</li>\n<li>Average bytes per second: ");
        g.append(Long.toString(gbytes),  "GB, ");
        g.append(Long.toString(mbytes % 1024), "MB, ");
        g.append(Long.toString(kbytes % 1024), "KB, ");
        g.append(Long.toString(avgbps % 1024));
    } else if (mbytes != 0) {
        g.append("</li>\n<li>Average bytes per second: ");
        g.append(Long.toString(mbytes), "MB, ");
        g.append(Long.toString(kbytes % 1024), "KB, ");
        g.append(Long.toString(avgbps % 1024));
    } else if (kbytes != 0) {
        g.append("</li>\n<li>Average bytes per second: ");
        g.append(Long.toString(kbytes), "KB, ");
        g.append(Long.toString(avgbps % 1024));
    } else {
        g.append("</li>\n<li>Average bytes per second: ", 
             Long.toString(avgbps));
    }    
    g.append("</li>\n</ul>");
    // Request times:
    g.append(time_tbl) ;
    g.append("<td>"
         , Long.toString(stats.getMinRequestTime())
         , " <span class=\"unit\">ms</span>") ;
    g.append("</td>\n<td>"
         , Long.toString(stats.getMeanRequestTime())
         , " <span class=\"unit\">ms</span>") ;
    g.append("</td>\n<td>"
         , Long.toString(stats.getMaxRequestTime())
         , " <span class=\"unit\">ms</span>") ;
    g.append("</td>\n</table>\n") ;

    // static
    if (static_hits>0) {
        g.append(sta_time_tbl) ;
        g.append("<td>"
             , Long.toString(stats.getMinStaticRequestTime())
             , " <span class=\"unit\">ms</span>") ;
        g.append("</td>\n<td>"
             , Long.toString(stats.getMeanStaticRequestTime())
             , " <span class=\"unit\">ms</span>") ;
        g.append("</td>\n<td>"
             , Long.toString(stats.getMaxStaticRequestTime())
             , " <span class=\"unit\">ms</span>") ;
        g.append("</td>\n</table>\n") ;
    }

    // dynamic 
    if (dyn_hits>0) {
        g.append(dyn_time_tbl) ;
        g.append("<td>"
             , Long.toString(stats.getMinDynamicRequestTime())
             , " <span class=\"unit\">ms</span>") ;
        g.append("</td>\n<td>"
             , Long.toString(stats.getMeanDynamicRequestTime())
             , " <span class=\"unit\">ms</span>") ;
        g.append("</td>\n<td>"
             , Long.toString(stats.getMaxDynamicRequestTime())
             , " <span class=\"unit\">ms</span>") ;
        g.append("</td>\n</table>\n") ;
    }

    // Get Server internal Stats
    try {
        g.append(((httpd)getServer()).getHTMLStatus());
    } catch (Exception ex) {
        ex.printStackTrace();
    }
    Reply reply = request.makeReply(HTTP.OK) ;
    reply.setNoCache();
    reply.setStream (g) ;
    reply.setDynamic(true);
    return reply ;
    }
}
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1 に答える 1

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現在、すべてのデータをオブジェクトに抽出しhttpdStatistics、HtmlGeneratorそれを使用してを構築しているようReplyです。httpdStatisticsまた、このクラスの外部からオブジェクト自体にアクセスできるようにしたいのですが、そうですか？

内部で何が起こっているのかわかりませんがgetServer().getStatistics()、それを返す「getter」メソッドを追加していただけませんか。get()次に、コードの重複を避けるために、の内部でゲッターを使用することもできます。何かのようなもの：

public httpdStatistics getStats() {
  return ((httpd)getServer()).getStatistics();
}

とでget()：

httpdStatistics stats = getStats();
于 2012-07-06T21:34:04.063 に答える