读取资源文件

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
public class Config {
	private static Properties prop = null;
         //web项目下的路径
	private static String propFileName = "resource/mailResource.properties";
	private synchronized static void loadProperties() {
		prop = new Properties();
		try {
                           //读取文件			InputStream input = Config.class.getClassLoader().getResourceAsStream(propFileName);
			prop.load(input);
		} catch (IOException e) {
			e.printStackTrace();
		}
	}
	public static String getProperty(String propName) {
		loadProperties();
		return prop.getProperty(propName);
	}
	public static String getPropFileName() {
		return propFileName;
	}
	public static void setPropFileName(String propFileName) {
		Config.propFileName = propFileName;
	}
}