Question

可执行jar怎么读取外部配置文件

Answer 1

先看代码目录结构： 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： 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：META-INFMANIFEST.MFweatherQueryWeather.class weather.xml 用下面的方法就可以找到weather.xml 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 = "";