用apache的configuration实现实时配置

apache下commons有一个configeration包，对于做配置很方便，尤其是实时热配置。可以自动监测到配置文件的更改而reload配置文件。在项目中使用所以进行了一下封装。

java 代码

public class DefaultRealTimeXMLConfiger {

    private static Log logger = LogFactory.getLog(DefaultRealTimeXMLConfiger.class);

    private String fileName;

    private long reloadPeriod;

    private XMLConfiguration config;

    public void init()
    {
        String filePath = GlobalConfigerImpl.getConfDir()+"/"+fileName;
        logger.debug("will config with XML file["+filePath+"]");

        File file = new File(filePath);
        if (!file.exists() || !file.isFile()) {
            logger.error(" can't find file[" + filePath + "]");
            throw new IllegalArgumentException("config error! can't find file[" + filePath + "]");
        }
        this.init(file);
    }

    public void init(File file) {
        try {
            config = new XMLConfiguration(file);
            FileChangedReloadingStrategy fs = new FileChangedReloadingStrategy();
            fs.setConfiguration(config);

            if(this.reloadPeriod>0)
            {
                fs.setRefreshDelay(this.reloadPeriod);
            }
            config.setReloadingStrategy(fs);

        } catch (ConfigurationException e) {
            logger.error("error! configer error["+file.getPath()+"]");
            logger.error(e);
            e.printStackTrace();
        }
    }

    public Object getProperty(String name) {
        Object s = this.config.getProperty(name);
        return s;
    }

    public String getString(String name) {
        Object s = this.config.getProperty(name);
        String result = null;
        if (s != null)
            result = (String) s;

        return result;
    }

    public String[] getStringArray(String name) {
        String[] target = this.config.getStringArray(name);

        return target;
    }


    /**
     * @return Returns the fileName.
     */
    public String getFileName() {
        return fileName;
    }

    /**
     * @param fileName The fileName to set.
     */
    public void setFileName(String fileName) {
        this.fileName = fileName;
    }

    /**
     * @return Returns the reloadPeriod.
     */
    public long getReloadPeriod() {
        return reloadPeriod;
    }

    /**
     * @param reloadPeriod The reloadPeriod to set.
     */
    public void setReloadPeriod(long reloadPeriod) {
        this.reloadPeriod = reloadPeriod;
    }
}

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异常处理

• 2006-03-24 06:34
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