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"));

     }

 }