cn.dreampie.common.util.properties.Proper Maven / Gradle / Ivy
/**
* Copyright (c) 2011-2015, James Zhan 詹波 ([email protected]).
*
* Licensed 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 cn.dreampie.common.util.properties;
import cn.dreampie.common.Constant;
import java.io.File;
import java.util.Map;
import java.util.concurrent.ConcurrentHashMap;
/**
* Proper. Proper can load properties file from CLASSPATH or File object.
*/
public class Proper {
private static final Map map = new ConcurrentHashMap();
private static Prop prop = null;
private Proper() {
}
/**
* Using the properties file. It will loading the properties file if not loading.
*
* @see #use(String, String)
*/
public static Prop use(String fileName) {
return use(fileName, Constant.encoding);
}
/**
* Using the properties file. It will loading the properties file if not loading.
*
* Example:
* Proper.use("config.txt", "UTF-8");
* Proper.use("other_config.txt", "UTF-8");
* String userName = Proper.get("userName");
* String password = Proper.get("password");
*
* userName = Proper.use("other_config.txt").get("userName");
* password = Proper.use("other_config.txt").get("password");
*
* Proper.use("com/jfinal/config_in_sub_directory_of_classpath.txt");
*
* @param fileName the properties file's name in classpath or the sub directory of classpath
* @param encoding the encoding
*/
public static Prop use(String fileName, String encoding) {
Prop result = map.get(fileName);
if (result == null) {
result = new Prop(fileName, encoding);
map.put(fileName, result);
if (Proper.prop == null)
Proper.prop = result;
}
return result;
}
/**
* Using the properties file bye File object. It will loading the properties file if not loading.
*
* @see #use(java.io.File, String)
*/
public static Prop use(File file) {
return use(file, Constant.encoding);
}
/**
* Using the properties file bye File object. It will loading the properties file if not loading.
*
* Example:
* Proper.use(new File("/var/config/my_config.txt"), "UTF-8");
* Strig userName = Proper.use("my_config.txt").get("userName");
*
* @param file the properties File object
* @param encoding the encoding
*/
public static Prop use(File file, String encoding) {
Prop result = map.get(file.getName());
if (result == null) {
result = new Prop(file, encoding);
map.put(file.getName(), result);
if (Proper.prop == null)
Proper.prop = result;
}
return result;
}
public static Prop useless(String fileName) {
Prop previous = map.remove(fileName);
if (Proper.prop == previous)
Proper.prop = null;
return previous;
}
public static void clear() {
prop = null;
map.clear();
}
public static Prop getProp() {
if (prop == null)
throw new IllegalStateException("Load propties file by invoking Proper.use(String fileName) method first.");
return prop;
}
public static Prop getProp(String fileName) {
return map.get(fileName);
}
public static String get(String key) {
return getProp().get(key);
}
public static String get(String key, String defaultValue) {
return getProp().get(key, defaultValue);
}
public static Integer getInt(String key) {
return getProp().getInt(key);
}
public static Integer getInt(String key, Integer defaultValue) {
return getProp().getInt(key, defaultValue);
}
public static Long getLong(String key) {
return getProp().getLong(key);
}
public static Long getLong(String key, Long defaultValue) {
return getProp().getLong(key, defaultValue);
}
public static Boolean getBoolean(String key) {
return getProp().getBoolean(key);
}
public static Boolean getBoolean(String key, Boolean defaultValue) {
return getProp().getBoolean(key, defaultValue);
}
public static boolean containsKey(String key) {
return getProp().containsKey(key);
}
}