读JAR包中的配置文件

jar包里面的代码如何读取jar包中的配置文件？
先看代码目录结构：
Java代码
src/weather/  
   QueryWeather.java  
   weather.xml 

src/weather/
   QueryWeather.java
   weather.xml

程序里面可以直接读取到weather.xml文件，代码如下：
Java代码
private static String getXmlContent()throws IOException {  
        FileReader f = new FileReader("src/weather/weather.xml");  
        BufferedReader fb = new BufferedReader(f);  
        StringBuffer sb = new StringBuffer("");  
        String s = "";  
        while((s = fb.readLine()) != null) {  
            sb = sb.append(s);  
        }  
        return sb.toString();  
    } 

private static String getXmlContent()throws IOException {
FileReader f = new FileReader("src/weather/weather.xml");
BufferedReader fb = new BufferedReader(f);
StringBuffer sb = new StringBuffer("");
String s = "";
while((s = fb.readLine()) != null) {
sb = sb.append(s);
}
return sb.toString();
}

但是一旦把这个class文件和xml文件打成jar包再运行，对不起，报错，QueryWeather.class字节码根本找不到weather.xml

在看打成jar包的结构：
Java代码
META-INF  
   MANIFEST.MF  
weather  
   QueryWeather.class 
   weather.xml 

META-INF
   MANIFEST.MF
weather
   QueryWeather.class
   weather.xml

用下面的方法就可以找到weather.xml
Java代码
private static String getXmlContent()throws IOException {  
    Reader f = new InputStreamReader(QueryWeather.class.getClass().getResourceAsStream("/weather/weather.xml"));          
    BufferedReader fb = new BufferedReader(f);  
    StringBuffer sb = new StringBuffer("");  
    String s = "";  
    while((s = fb.readLine()) != null) {  
        sb = sb.append(s);  
    }  
    return sb.toString();  
}