java 从Properties文件读取工具

import java.io.InputStream;
import java.util.Properties;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;

public class InterPropertiesUtils {
       public static final String DEFAULT_CONFIG = "/inter.properties" ;
       private static Properties config;
       private static final Log logger = LogFactory.getLog(InterPropertiesUtils .class );
                  
       static {
             config = new Properties();
             try {
                  InputStream is = InterPropertiesUtils. class.getResourceAsStream( DEFAULT_CONFIG );
            if (is != null) {
                config .load(is);
                logger .debug("获取接口配置文件" + DEFAULT_CONFIG+ "信息:\n"+ config );
            } else {
                   logger .error("未配置接口配置文件" + DEFAULT_CONFIG+ " !webservice接口可能调用不正确" );
            }
            } catch (Exception e){
                   logger .error("接口配置文件" + DEFAULT_CONFIG+ " 读取异常!webservice接口可能调用不正确" ,e);
            }
      }
      
       public static String getProperty(String key) {
            String value = config .getProperty(key);
        return value == null ? value : value.trim();
      }
}