Properties类使用

package com.emolay.util;

import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;

public class PropertiesUtils {

    private static final Properties properties = new Properties();

    static {
        try {
            load();
        } catch (Exception e) {
        }
    }
    private static void load(){
        InputStream input = null;
        try {
            input = PropertiesUtils.class.getResourceAsStream("/application.properties");
            properties.load(input);
        }  catch (IOException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        }
    }

    public static String getProperty(String key){
        String value = "";
        if (properties.containsKey(key)) {
            value = properties.getProperty(key);
        }
        return value;
    }

}