读取WEB-INF/classes目录下文件，及读取其key-value
package com.ui.version.config;import java.io.IOException;import java.io.InputStream;import java.util.Properties;import java.util.logging.Level;import java.util.logging.Logger;public class Config {private static Logger log = Logger.getLogger(Config.class.getName());private static final String fileName = "xiu-ui.properties";private static final String fileName2 = "com/ui/version/resources/xiu-ui.properties";private static Properties properties = new Properties();;static{boolean ready = false;InputStream is = Config.class.getClassLoader().getResourceAsStream(fileName);if(is != null){try {properties.load(is);ready = true;log.log(Level.INFO, "加载classpath:"+fileName+"成功！");} catch (IOException e) {log.log(Level.WARNING, "加载classpath:"+fileName+"失败", e);}}if(!ready){is = Config.class.getClassLoader().getResourceAsStream(fileName2);if(is != null){try {properties.load(is);ready = true;log.log(Level.INFO, "加载classpath:"+fileName2+"成功！");} catch (IOException e) {log.log(Level.WARNING, "加载classpath:"+fileName2+"失败", e);}}}if(!ready){log.log(Level.SEVERE, "未能找到资源，请将"+fileName+"文件放到classes目录下");}}public static String getConfigValue(String key){return properties.getProperty(key,null);}public static Properties getProperties(){return properties;}}