PropertiesConfiguration处理properties

1.url:http://blog.csdn.net/majian_1987/article/details/11144335

2.

jar:它来自commons-configuration-1.6.jar。

import org.apache.commons.configuration.ConfigurationException;
import org.apache.commons.configuration.PropertiesConfiguration;
import org.apache.commons.io.FilenameUtils;
import org.apache.commons.lang3.StringUtils;

public class PropertiesUtils {
	private static String filePah = "";
	private final static String fileName = "jdbc.properties";
	
	static{
		filePah = PropertiesUtils.class.getClassLoader().getResource("").getPath();
		filePah += fileName;
	}
	
	public static boolean setProperty(final String key,final String value){
		return setProperty(fileName,key,value);
	}
	
	public static boolean setProperty(final String fileName,final String key,final String value){
		try {
			PropertiesConfiguration  config = null;
			if(StringUtils.isNotBlank(fileName)&&isValidExtension(fileName)){
				config = new PropertiesConfiguration(fileName);
				config.setProperty(key, value);
				config.save();
			}
			return true;
		} catch (ConfigurationException e) {
			e.printStackTrace();
		}
		return false;
	}
	
	
	public static String getProperty(final String key){
		return getProperty(fileName,key);
	}
	
	public static String getProperty(final String fileName,final String key){
		String value = "";
		
		PropertiesConfiguration  config = null;
		try {
			if(StringUtils.isNotBlank(fileName)&&isValidExtension(fileName)){
				config = new PropertiesConfiguration(fileName);
				value = config.getString(key);
			}
		} catch (ConfigurationException e) {
			e.printStackTrace();
		}
		return value;
	}
	
	private static boolean isValidExtension(final String fileName){
		String extension = FilenameUtils.getExtension(fileName);
		if(StringUtils.equalsIgnoreCase(extension, "properties")){
			return true;
		}else{
			return false;
		}
	}
	
	public static void main(final String[] args){
		System.out.println(PropertiesUtils.getProperty("key"));
	}
}

 3.PropertiesUtils.java