properties屬性檔案工具類，properties工具類

properties屬性檔案工具類，properties工具類

package xxx.business.utils;import org.apache.commons.configuration.ConfigurationException;import org.apache.commons.configuration.PropertiesConfiguration;import org.apache.commons.configuration.reloading.FileChangedReloadingStrategy;import org.slf4j.Logger;import org.slf4j.LoggerFactory;/** * Created by windwant on 2016/7/19. */public class ConfigUtils {    private static final Logger logger = LoggerFactory.getLogger(ConfigUtils.class);    private static PropertiesConfiguration config = null;    static {        try {            if (config == null) {                config = new PropertiesConfiguration("config.properties");                //自動重新載入                config.setReloadingStrategy(new FileChangedReloadingStrategy());                //自動儲存                config.setAutoSave(true);            }        } catch (ConfigurationException e) {            logger.error("load config.properties error", e);            throw new RuntimeException(e);        }    }    private ConfigUtils(){}    public static String get(String key) {        if (config != null) {            String value = config.getString(key);            return value == null ? "" : value;        }        return "";    }    public static Integer getInteger(String key) {        int result = -1;        if (config != null) {            try {                result = Integer.parseInt(config.getString(key));            } catch (NumberFormatException e) {                result = -1;            }        }        return result;    }}