读取配置文件工具类

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;
/**
* 读取配置文件工具类
*
* @auther Dennis
* @date 2018/8/15
*/
public class PropertiesUtil {

private static Logger logger = LoggerFactory.getLogger(PropertiesUtil.class);

private static Properties props;

static {
    String fileName = "mmall.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);
    }
}

public static String getProperty(String key) {
    String value = props.getProperty(key.trim());
    if (StringUtils.isBlank(value)) {
        return null;
    }
    return value.trim();
}

public static String getProperty(String key, String defaultValue) {
    String value = props.getProperty(key.trim());
    if (StringUtils.isBlank(value)) {
        value = defaultValue;
    }
    return value.trim();
}

}