Java tutorial
/* * Licensed to the Apache Software Foundation (ASF) under one * or more contributor license agreements. See the NOTICE file * distributed with this work for additional information * regarding copyright ownership. The ASF licenses this file * to you under the Apache License, Version 2.0 (the * "License"); you may not use this file except in compliance * with the License. You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ package com.glaf.core.xml; import java.io.File; import java.io.FileInputStream; import java.io.InputStream; import java.util.Enumeration; import java.util.Properties; import java.util.concurrent.atomic.AtomicBoolean; import org.apache.commons.lang3.StringUtils; import com.alibaba.fastjson.JSON; import com.alibaba.fastjson.JSONObject; import com.glaf.core.config.SystemProperties; import com.glaf.core.util.IOUtils; import com.glaf.core.util.PropertiesUtils; public class XmlProperties { private static volatile Properties properties = new Properties(); protected static AtomicBoolean loading = new AtomicBoolean(false); static { try { reload(); } catch (Exception ex) { } } public static boolean eq(String key, String value) { if (key != null && value != null) { String x = properties.getProperty(key); if (StringUtils.equals(value, x)) { return true; } } return false; } public static boolean getBoolean(String key) { if (hasObject(key)) { String value = properties.getProperty(key); return Boolean.valueOf(value).booleanValue(); } return false; } public static double getDouble(String key) { if (hasObject(key)) { String value = properties.getProperty(key); return Double.parseDouble(value); } return 0; } public static int getInt(String key) { if (hasObject(key)) { String value = properties.getProperty(key); return Integer.parseInt(value); } return 0; } public static JSONObject getJSONObject(String key) { if (hasObject(key)) { String value = properties.getProperty(key); if (value == null) { value = properties.getProperty(key.toUpperCase()); } return JSON.parseObject(value); } return null; } public static long getLong(String key) { if (hasObject(key)) { String value = properties.getProperty(key); return Long.parseLong(value); } return 0; } public static Properties getProperties() { Properties p = new Properties(); Enumeration<?> e = properties.keys(); while (e.hasMoreElements()) { String key = (String) e.nextElement(); String value = properties.getProperty(key); p.put(key, value); } return p; } public static String getString(String key) { if (hasObject(key)) { String value = properties.getProperty(key); if (value == null) { value = properties.getProperty(key.toUpperCase()); } return value; } return null; } public static boolean hasObject(String key) { if (key == null || properties == null) { return false; } String value = properties.getProperty(key); if (value != null) { return true; } return false; } public static void reload() { if (!loading.get()) { InputStream inputStream = null; try { loading.set(true); String config = SystemProperties.getConfigRootPath() + "/conf/templates/xml"; File directory = new File(config); if (directory.exists() && directory.isDirectory()) { String[] filelist = directory.list(); if (filelist != null) { for (int i = 0, len = filelist.length; i < len; i++) { String filename = config + "/" + filelist[i]; File file = new File(filename); if (file.isFile() && file.getName().endsWith(".properties")) { inputStream = new FileInputStream(file); Properties p = PropertiesUtils.loadProperties(inputStream); if (p != null) { Enumeration<?> e = p.keys(); while (e.hasMoreElements()) { String key = (String) e.nextElement(); String value = p.getProperty(key); properties.setProperty(key, value); properties.setProperty(key.toLowerCase(), value); properties.setProperty(key.toUpperCase(), value); } } IOUtils.closeStream(inputStream); } } } } } catch (Exception ex) { throw new RuntimeException(ex); } finally { loading.set(false); IOUtils.closeStream(inputStream); } } } private XmlProperties() { } }