loggerfactory.java.svn-base

日志组件,添加到应用中,可在数据库中查询日志

package com.gisinfo.common.log;

import java.util.*;

/**
 * User: Ken
 * Date: 2008-5-20
 * Time: 17:01:26
 */
public class LoggerFactory {
    private static Map<String, Logger> logs = new HashMap<String, Logger>();
    private static Map<String, LogWriter> writers = new HashMap<String, LogWriter>();

    public static Logger getLogger(String str) {
        Logger log = logs.get(str);
        if (log != null) return log;
        log = new Logger(str, false);

        logs.put(str, log);
        return log;
    }

    public static Logger getCustomLogger(String str) {
        if (!LoggerConfig.customLoggers.contains(str)) {
            LoggerConfig.writeInfo("找不到自定义Logger:" + str + ",该Logger将被自动转为系统Logger!");
        }
        Logger log = logs.get(str);
        if (log != null) return log;
        log = new Logger( str, true);
        logs.put("custom$" +str, log);
        return log;
    }

    //      fileWriter,com.gisinfo.common.log.FileLogWriter
    public static LogWriter getLogWriter(String name, String className) {
        try {
            String key = name + "$" + className;
            Object o = writers.get(key);
            if (o != null) return (LogWriter) o;
            o = Class.forName(className).newInstance();
            if (!(o instanceof LogWriter)) {
                LoggerConfig.writeInfo("类" + className + "应该继承com.gisinfo.common.log.LogWriter");
                return null;
            }
            writers.put(key, (LogWriter) o);
            return (LogWriter) o;
        } catch (InstantiationException e) {
            LoggerConfig.writeInfo(e);
        } catch (IllegalAccessException e) {
            LoggerConfig.writeInfo(e);
        } catch (ClassNotFoundException e) {
            LoggerConfig.writeInfo(e);
        }
        return null;
    }

    public static synchronized void write() {
        /*for (Logger log : logs.values()) {
            log.write();
        }*/
        for (LogWriter lw : writers.values()) {
            try {
                if (!lw.isWriteImmediately()) lw.writeLog(lw.getEvents());
            } catch (LogException e) {
                LoggerConfig.writeInfo(e);
            }
            lw.clearAllEvent();
        }

    }

    public static synchronized List<Logger> getAllLoggers() {
        return new ArrayList<Logger>(logs.values());
    }

}