配置文件Properties读取类 ResourceBundle

ResourceBundle

默认只加载classpath下的配置文件，也就是普通java项目src下的配置文件

要加载其他目录下配置文件，可以先用流加载，再用ResourceBundle读取。

conf.one 也可以写成conf/one   都是指向conf目录下one.peroperties 

package p1;import java.io.BufferedInputStream;import java.io.FileInputStream;import java.io.FileNotFoundException;import java.io.IOException;import java.util.HashMap;import java.util.Map;import java.util.PropertyResourceBundle;import java.util.ResourceBundle;public class T1 {public static void main(String[] args) throws IOException {//加载classpath下的资源文件ResourceBundle bundle = ResourceBundle.getBundle("conf.one");Map<Object, Object> map = new HashMap<>();for(String s:bundle.keySet()){Object object = bundle.getObject(s);map.put(s, object.toString());}System.out.println(map);//加载非classpath下的资文件//String userdir = System.getProperty("user.dir");//String path=userdir+"/conf1/one.properties";//BufferedInputStream bis = new BufferedInputStream(new FileInputStream(path));//ResourceBundle bundle = new PropertyResourceBundle(bis);////Map<Object, Object> map = new HashMap<>();//for(String s:bundle.keySet()){//Object object = bundle.getObject(s);//map.put(s, object.toString());//}////System.out.println(map);//}}