• htmlFormat


    import java.text.SimpleDateFormat;   
    
    import org.apache.log4j.HTMLLayout;   
    import org.apache.log4j.Layout;   
    import org.apache.log4j.Level;   
    import org.apache.log4j.helpers.Transform;   
    import org.apache.log4j.spi.LocationInfo;   
    import org.apache.log4j.spi.LoggingEvent;   
      
      
    public class HtmlLogFormat extends HTMLLayout {   
      
        public HtmlLogFormat() {   
        }   
      
        protected final int BUF_SIZE = 256;   
      
        protected final int MAX_CAPACITY = 1024;   
      
        static String TRACE_PREFIX = "<br>&nbsp;&nbsp;&nbsp;&nbsp;";   
      
        private StringBuffer sbuf = new StringBuffer(BUF_SIZE);   
           
        String title="Automation Log";   
      
        /**  
         * A string constant used in naming the option for setting the the HTML  
         * document title. Current value of this string constant is <b>Title</b>.  
         */  
        public static final String TITLE_OPTION = "Title";   
      
        // Print no location info by default   
        boolean locationInfo = true;   
           
        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>");   
            sbuf.append(new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(new java.util.Date()));   
            sbuf.append("</td>" + Layout.LINE_SEP);   
      
            sbuf.append("<td title="Level">");   
            if (event.getLevel().equals(Level.FATAL)) {   
                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("<font color="green">");   
                sbuf.append(Transform.escapeTags(String.valueOf(event.getLevel())));   
                sbuf.append("</font>");   
            }   
            sbuf.append("</td>" + Layout.LINE_SEP);   
               
       if (locationInfo) {   
                LocationInfo locInfo = event.getLocationInformation();   
                sbuf.append("<td title="Source">");  
                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="4">");   
                appendThrowableAsHTML(s, sbuf);   
                sbuf.append("</td></tr>" + Layout.LINE_SEP);   
            }   
            return sbuf.toString();   
        }   
       
        private void appendThrowableAsHTML(String[] s,StringBuffer sbuf){   
            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);   
                }   
            }   
        }   
      
        /**  
         * Returns appropriate HTML headers.  
         */  
        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("<meta http-equiv="Content-Type" content="text/html; charset=utf-8">" + Layout.LINE_SEP);   
            sbuf.append("<title>" + title + "</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: 12px;}" + 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("<table cellspacing="0" cellpadding="4" border="1" bordercolor="#224466" width="100%">" + Layout.LINE_SEP);   
            sbuf.append("<tr>" + Layout.LINE_SEP);   
           
            sbuf.append("<th width='120'>Time</th>" + Layout.LINE_SEP);   
            sbuf.append("<th>Level</th>" + Layout.LINE_SEP);   
          
            if (locationInfo) {   
                sbuf.append("<th>Source</th>" + Layout.LINE_SEP);   
            }   
       
            sbuf.append("<th>Message</th>" + Layout.LINE_SEP);   
            sbuf.append("</tr>" + Layout.LINE_SEP);   
            sbuf.append("<br></br>" + Layout.LINE_SEP);   
            return sbuf.toString();   
        }   
      
    }  
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  • 原文地址:https://www.cnblogs.com/lgm1999/p/6233090.html
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