SSM框架中，写一个读取配置文件的工具类

Dear 丶 2023-10-07 18:38 22阅读 0赞

## 1、配置文件 ##

ftp.server.ip=
    ftp.user=
    ftp.pass=
    ftp.server.http.prefix=/upload/
    ftp.remotepath=

## 2、工具类 ##

import org.apache.commons.lang3.StringUtils;
    import org.slf4j.Logger;
    import org.slf4j.LoggerFactory;
    
    import java.io.IOException;
    import java.io.InputStreamReader;
    import java.util.Properties;
    
    /**
     * Created by geely
     */
    public class PropertiesUtil {
        
    
        private static Logger logger = LoggerFactory.getLogger(PropertiesUtil.class);
    
        private static Properties props;
    
        static {
        
            String fileName = "ppmall.properties";
            props = new Properties();
            try {
        
                props.load(new InputStreamReader(PropertiesUtil.class.getClassLoader().getResourceAsStream(fileName),"UTF-8"));
            } catch (IOException e) {
        
                logger.error("配置文件读取异常",e);
            }
        }
    
        //如果key对应有值，则取出
        public static String getProperty(String key){
        
            String value = props.getProperty(key.trim());
            if(StringUtils.isBlank(value)){
        
                return null;
            }
            return value.trim();
        }
    
        //如果key对应有值，则取出，如果无值，则用默认值
        public static String getProperty(String key,String defaultValue){
        
    
            String value = props.getProperty(key.trim());
            if(StringUtils.isBlank(value)){
        
                value = defaultValue;
            }
            return value.trim();
        }
    }

## 3、其他 ##

1、下面代码得到的是 /upload/

PropertiesUtil.getProperty("ftp.server.http.prefix")