Dom4j_demo.rar_DEMO_dom4j de_dom4j demo_dom4j demo project_xml读

package com.dress.common.util; import java.io.FileInputStream; import java.io.InputStream; import java.util.Hashtable; import java.util.Properties; public class PropertiesUtil { private static Hashtable hash = new Hashtable(); private final static String FILENAME = "upload.properties"; private PropertiesUtil() { } /** * 得到文件内容 * * @param fileName * @return */ public static Properties getProperties(String fileName) { InputStream input = null; Properties prop = null; try { prop = (Properties) hash.get(fileName); if (prop == null) { try { input = new FileInputStream(fileName);// 全路径 } catch (Exception ex) { if (fileName.startsWith("/")) { input = PropertiesUtil.class .getResourceAsStream(fileName);// 只有/+文件名字 } else { input = PropertiesUtil.class.getResourceAsStream("/" + fileName);// 只有文件名字的 } } prop = new Properties(); prop.load(input); if (input != null) { input.close(); } } } catch (Exception e) { // logger.error(e); return null; } return prop; } /** *通过key 和文件名称得到文件内容 * * @param fileName * @return */ public static String getProperties(String fileName,String key) { Properties prop = null; try { prop=getProperties(fileName); return prop.getProperty(key); } catch (Exception e) { // logger.error(e); return ""; } } /** * 通过key得到值 * * @param key * @return */ public static String getProperty(String key) { try { Properties prop = PropertiesUtil.getProperties(FILENAME); if (null == prop) return null; return prop.getProperty(key); } catch (Exception ex) { return null; } } /** * 通过key得到拥有默认的值 * * @param key * @return */ public static String getProperty(String key, String defaultValue) { try { Properties prop = PropertiesUtil.getProperties(FILENAME); if (null == prop) return null; return prop.getProperty(key, defaultValue); } catch (Exception ex) { return null; } } /** * 通过key得到数组值 * * @param key * @return */ public static String getProperty(String key, String[] array) { try { Properties prop = PropertiesUtil.getProperties(FILENAME); if (null == prop) return null; String str = prop.getProperty(key); for (int i = 0; i < array.length; i++) { str = str.replaceAll("\\{" + (i + 1) + "\\}", array[i]); } return str; } catch (Exception ex) { return null; } } }