公共类 Log4jHTMLlayout 扩展 HTMLLayout { protected final int BUF_SIZE = 256; 受保护的最终 int MAX_CAPACITY = 1024; 静态字符串 TRACE_PREFIX = "
"; 私有 StringBuffer sbuf = new StringBuffer(BUF_SIZE); 公共静态最终字符串 LOCATION_INFO_OPTION = "LocationInfo";
public String format(LoggingEvent event) {
if (sbuf.capacity() > MAX_CAPACITY) {
sbuf = new StringBuffer(BUF_SIZE);
} else {
sbuf.setLength(0);
}
sbuf.append(Layout.LINE_SEP + "<tr>" + Layout.LINE_SEP);
sbuf.append("<td>");
Calendar cal=Calendar.getInstance();
//sbuf.append(event.timeStamp - LoggingEvent.getStartTime());
Timestamp stmp=new Timestamp(cal.getTimeInMillis());
sbuf.append(stmp.toString());
sbuf.append("</td>" + Layout.LINE_SEP);
String escapedThread = Transform.escapeTags(event.getThreadName());
sbuf.append("<td title=\"" + escapedThread + " thread\">");
sbuf.append(escapedThread);
sbuf.append("</td>" + Layout.LINE_SEP);
sbuf.append("<td title=\"Level\">");
if (event.getLevel().equals(Level.DEBUG)) {
sbuf.append("<font color=\"#339933\">");
sbuf.append(Transform.escapeTags(String.valueOf(event.getLevel())));
sbuf.append("</font>");
} else if (event.getLevel().isGreaterOrEqual(Level.WARN)) {
sbuf.append("<font color=\"#993300\"><strong>");
sbuf.append(Transform.escapeTags(String.valueOf(event.getLevel())));
sbuf.append("</strong></font>");
} else {
sbuf.append(Transform.escapeTags(String.valueOf(event.getLevel())));
}
sbuf.append("</td>" + Layout.LINE_SEP);
String escapedLogger = Transform.escapeTags(event.getLoggerName());
sbuf.append("<td title=\"" + escapedLogger + " category\">");
sbuf.append(escapedLogger);
sbuf.append("</td>" + Layout.LINE_SEP);
if (getLocationInfo()) {
LocationInfo locInfo = event.getLocationInformation();
sbuf.append("<td>");
sbuf.append(Transform.escapeTags(locInfo.getFileName()));
sbuf.append(':');
sbuf.append(locInfo.getLineNumber());
sbuf.append("</td>" + Layout.LINE_SEP);
}
sbuf.append("<td title=\"Message\">");
sbuf.append(Transform.escapeTags(event.getRenderedMessage()));
sbuf.append("</td>" + Layout.LINE_SEP);
sbuf.append("</tr>" + Layout.LINE_SEP);
if (event.getNDC() != null) {
sbuf.append("<tr><td bgcolor=\"#EEEEEE\" style=\"font-size : xx-small;\" colspan=\"6\" title=\"Nested Diagnostic Context\">");
sbuf.append("NDC: " + Transform.escapeTags(event.getNDC()));
sbuf.append("</td></tr>" + Layout.LINE_SEP);
}
String[] s = event.getThrowableStrRep();
if (s != null) {
sbuf.append("<tr><td bgcolor=\"#993300\" style=\"color:White; font-size : xx-small;\" colspan=\"6\">");
appendThrowableAsHTML(s, sbuf,true);
sbuf.append("</td></tr>" + Layout.LINE_SEP);
}
return sbuf.toString();
}
public void appendThrowableAsHTML(String[] s, StringBuffer sbuf,boolean isAppend) {
if(s != null) {
int len = s.length;
if(len == 0)
return;
sbuf.append(Transform.escapeTags(s[0]));
sbuf.append(Layout.LINE_SEP);
for(int i = 1; i < len; i++) {
sbuf.append(TRACE_PREFIX);
sbuf.append(Transform.escapeTags(s[i]));
sbuf.append(Layout.LINE_SEP);
}
}
}
public String getHeader() {
StringBuffer sbuf = new StringBuffer();
sbuf.append("<!DOCTYPE HTML PUBLIC \"-//W3C//DTD HTML 4.01 Transitional//EN\" \"http://www.w3.org/TR/html4/loose.dtd\">" + Layout.LINE_SEP);
sbuf.append("<html>" + Layout.LINE_SEP);
sbuf.append("<head>" + Layout.LINE_SEP);
sbuf.append("<title>" + getTitle() + "</title>" + Layout.LINE_SEP);
sbuf.append("<style type=\"text/css\">" + Layout.LINE_SEP);
sbuf.append("<!--" + Layout.LINE_SEP);
sbuf.append("body, table {font-family: arial,sans-serif; font-size: x-small;}" + Layout.LINE_SEP);
sbuf.append("th {background: #336699; color: #FFFFFF; text-align: left;}" + Layout.LINE_SEP);
sbuf.append("-->" + Layout.LINE_SEP);
sbuf.append("</style>" + Layout.LINE_SEP);
sbuf.append("</head>" + Layout.LINE_SEP);
sbuf.append("<body bgcolor=\"#FFFFFF\" topmargin=\"6\" leftmargin=\"6\">" + Layout.LINE_SEP);
sbuf.append("<hr size=\"1\" noshade>" + Layout.LINE_SEP);
sbuf.append("Log session start time " + new java.util.Date() + "<br>" + Layout.LINE_SEP);
sbuf.append("<br>" + Layout.LINE_SEP);
sbuf.append("<table cellspacing=\"0\" cellpadding=\"4\" border=\"1\" bordercolor=\"#224466\" width=\"100%\">" + Layout.LINE_SEP);
sbuf.append("<tr>" + Layout.LINE_SEP);
sbuf.append("<th>Time</th>" + Layout.LINE_SEP);
sbuf.append("<th>Thread</th>" + Layout.LINE_SEP);
sbuf.append("<th>Level</th>" + Layout.LINE_SEP);
sbuf.append("<th>Category</th>" + Layout.LINE_SEP);
if (getLocationInfo()) {
sbuf.append("<th>File:Line</th>" + Layout.LINE_SEP);
}
sbuf.append("<th>Message</th>" + Layout.LINE_SEP);
sbuf.append("</tr>" + Layout.LINE_SEP);
return sbuf.toString();
}
}
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