properties读取

package com.itcast;

import java.util.Hashtable;
import java.util.Properties;

public class ConfigUtil {

    public  static final String DEFAULT_CONFIGNAME="viewConfig.properties";
   
   
    private static Hashtable property = new Hashtable();
     private static Properties defPro=loadProperty(DEFAULT_CONFIGNAME);
     static
     {
       if(defPro==null)
       {
         throw new RuntimeException("Can't Load " +DEFAULT_CONFIGNAME);
       }
     }
   
  public static String getProperty(String key)
     {
       String str = defPro.getProperty(key);
       if (str != null)
       {
         return str.trim();
       }
       else
       {
         return null;
       }
     }
 
   private static Properties loadProperty(String filename)
     {
       try
       {
      
         Properties filePro = new Properties();
         filePro.load(new ConfigUtil().getClass().getClassLoader().getResourceAsStream(filename));
         property.put(filename,filePro);
         return filePro;
       }
       catch (Exception ex)
       {
         return null;
       }
     }
}
test:

package com.itcast.test;

import com.itcast.ConfigUtil;

public class TestInfo {

 /**
  * @param args
  */
 public static void main(String[] args) {
 String ss= ConfigUtil.getProperty("broadCastSendHostIp");
 System.out.println(ss);
 }

}