import java.io.BufferedInputStream;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStream;
import java.util.Enumeration;
import java.util.HashMap;
import java.util.Map;
import java.util.Properties;

/**
 * 读取Properties综合类
 * @author
 */
public class PropertiesUtil {
   
    /**
     * 配置文件对象
     */
    private Properties props=null;
   
    /**
     * 构造函数
     * @param fileName 配置文件名称
     */
    public PropertiesUtil(String fileName){
        String filePath=getPath(PropertiesUtil.class) + fileName;
        props = new Properties();
        try {
            InputStream in = new BufferedInputStream(new FileInputStream(filePath));
            props.load(in);
            //关闭资源
            in.close();
        } catch (FileNotFoundException e) {
            e.printStackTrace();
        } catch (IOException e) {
            e.printStackTrace();
        }
    }
   
    /**
     * 根据key值读取配置的值
     * Jun 26, 2010 9:15:43 PM
     * @author 
     * @param key key值
     * @return key 键对应的值
     * @throws IOException
     */
    public String readValue(String key) throws IOException {
        return  props.getProperty(key);
    }
   
    /**
     * 读取properties的全部信息
     * Jun 26, 2010 9:21:01 PM
     * @author 
     * @throws FileNotFoundException 配置文件没有找到
     * @throws IOException 关闭资源文件，或者加载配置文件错误
     *
     */
    public Map<String,String> readAllProperties() throws FileNotFoundException,IOException  {
        //保存所有的键值
        Map<String,String> map=new HashMap<String,String>();
        Enumeration en = props.propertyNames();
        while (en.hasMoreElements()) {
            String key = (String) en.nextElement();
            String Property = props.getProperty(key);
            map.put(key, Property);
        }
        return map;
    }

    /**
     * 得到某一个类的路径
     * @param name
     * @return
     */
    private String getPath(Class name) {
        String strResult = null;
        if (System.getProperty("os.name").toLowerCase().indexOf("window") > -1) {
            strResult = name.getResource("/").toString().replace("file:/", "")
                    .replace("%20", " ");
        } else {
            strResult = name.getResource("/").toString().replace("file:", "")
                    .replace("%20", " ");
        }
        return strResult;
    }
}

?请大家多提宝贵意见，谢谢！

public class PropetiesUtil {
	
	private  Properties properties;
	/**
	 * 
	 * @param name 配置文件名字
	 * @param clazz 使用这个方法的类
	 * @throws IOException
	 */
	public PropetiesUtil(String name,Class clazz) throws IOException {
		properties=new Properties();
		InputStream in=clazz.getResourceAsStream("/"+name);
		properties.load(in);
		in.close();
	}
	
	/**
	 * 
	 * @param key
	 * @return
	 * @throws IOException
	 */
    public  String readValue(String key) throws IOException {
        return  properties.getProperty(key);
    }
}