PropertiesUtil 读取配置文件工具类

 package org.konghao.basic.util;

 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.Map.Entry;
 import java.util.Properties;

 import org.apache.wicket.util.file.File;
 import org.junit.Test;

 public class PropertiesUtil {

     private static Properties properties;

     private String proper_resource;
     public void setProper_resource(String proper_resource) {
         this.proper_resource = proper_resource;
     }

     public PropertiesUtil(String proper_resource) {
         this.proper_resource = proper_resource;
     }

     public Map<String,String> getProperties(){
         properties = getInstance();
         try {
             InputStream inputStream = PropertiesUtil.class.getClassLoader().getResourceAsStream(proper_resource);
             properties.load(inputStream);
         } catch (IOException e) {
             e.printStackTrace();
         }
         Map<String,String> regMap = new HashMap<String, String>();
         regMap.put("appId", properties.getProperty("appId"));
         regMap.put("appsecret", properties.getProperty("appsecret"));
         regMap.put("base_url", properties.getProperty("base_url"));
         regMap.put("weixin_token", properties.getProperty("weixin_token"));
         return regMap;
     }

     public static Properties getInstance(){
         if(null == properties){
             properties = new Properties();
         }
         return properties;
     }

     public static Properties loadResource(String file){
         properties = getInstance();
         try {
             InputStream inputStream = PropertiesUtil.class.getClassLoader().getResourceAsStream(file);
             System.out.println(inputStream);
             if(properties != null){
                 properties.load(inputStream);
             }
         } catch (IOException e) {
             e.printStackTrace();
         }
         return properties;
     }

     public static void main(String[] args) {
         PropertiesUtil pu = new PropertiesUtil("weixin_basic.properties");
         Map<String, String> propsMap = pu.getProperties();

         for(Entry<String, String> entry : propsMap.entrySet()) {
             System.out.println(("key: " + entry.getKey() + ", value: " + entry.getValue()));
         }

         Properties properties = loadResource("weixin_basic.properties");
         System.out.println(properties.getProperty("appId"));
     }
 }