看一看有什么解决方法

    private final static String MATCH_LEVEL = "ERROR|error|INFO|info|DEBUG|debug|WARN|warn|FATAL|fatal";

    private static Logger logger = Logger.getLogger("com.huawei.mediax");
 
    public Integer32 getHwLogLevel() throws SnmpException
    {
        Level Level = logger.getLevel();
        if (Level.isGreaterOrEqual(Priority.DEBUG))
        {
            this.hwLogLevel = new Integer32(1);
        }
        if (Level.isGreaterOrEqual(Priority.INFO))
        {
            this.hwLogLevel = new Integer32(2);
        }
        if (Level.isGreaterOrEqual(Priority.WARN))
        {
            this.hwLogLevel = new Integer32(3);
        }
        if (Level.isGreaterOrEqual(Priority.ERROR))
        {
            this.hwLogLevel = new Integer32(4);
        }
        if (Level.isGreaterOrEqual(Priority.FATAL))
        {
            this.hwLogLevel = new Integer32(5);
        }
        return hwLogLevel;
    }
    
 
    public void modifyLogfile(final Integer32 newValue)
    {
        
        //读取配置并组装日志文件log4j.xml的文件路径
        String filePath = "";
        //mdxdb模块存放log4j.xml文件目录与其他目录不一致
        if (ConfigKit.getMoudleType().equals(MDXDBTYPE))
        {
            filePath = System.getenv("SNMP_HOME") + File.separatorChar + "conf"
                    + File.separatorChar + "log4j.xml";
        }
        else
        {
            filePath = System.getenv("SNMP_HOME") + File.separatorChar + "conf"
                    + File.separatorChar + "server" + File.separatorChar
                    + "log4j.xml";
            
        }
        
        if (logger.isDebugEnabled())
        {
            logger.debug("The log4j.xml file path is <" + filePath + ">");
        }
        
        StringBuilder builder = new StringBuilder();
        try
        {
            //读写文件
            File logfile = new File(filePath);
            BufferedReader reader = new BufferedReader(new FileReader(logfile));
            
            if (reader.ready())
            {
                String tmp = null;
                while (null != (tmp = reader.readLine()))
                {
                    builder.append(tmp).append("\r\n");
                    if (-1 != tmp.indexOf("com.huawei.mediax"))
                    {
                        
                        String loglevel = reader.readLine();
                        //把匹配MATCH_LEVEL中的字符串，修改为传入的字符串
                        builder.append(
                                loglevel.replaceAll(MATCH_LEVEL,
                                        getLogLevelStr(newValue.getValue())))
                                .append("\r\n");
                    }
                    
                }
                BufferedWriter write = new BufferedWriter(new FileWriter(
                        logfile));
                write.write(builder.toString());
                write.close();
                reader.close();
                
                if (logger.isDebugEnabled())
                {
                    logger.debug("Changed the content :\r\n" + builder);
                }
                
            }
            else
            {
                logger.error("reader is not ready");
            }
            
        }
        catch (FileNotFoundException e)
        {
            logger.error("Reade log4j file error", e);
        }
        catch (IOException e)
        {
            logger.error("Writer log4j file error", e);
        }
    }
    public void setHwLogLevel(final Integer32 newValue) throws SnmpException
    {
        this.hwLogLevel = newValue;
        logger.setLevel(getLogLevel(newValue.getValue()));
        if (logger.isDebugEnabled())
        {
            logger.debug("set Log Level =" + getLogLevel(newValue.getValue()));
        }
        //修改日志文件
        modifyLogfile(newValue);
        
        if (logger.isDebugEnabled())
        {
            logger.debug("set Log Level success");
        }
    }
}