java读取Properties配置文件

代码比较简单，平时也比较常用，直接上

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;


public class PropertiesUtil {

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

    private static Properties props;


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

    //获取配置文件中的key对呀的value
    public static String getProperty(String key) {
        String value = props.getProperty(key.trim());
        if (StringUtils.isBlank(value)) {
            return null;
        }
        return value.trim();
    }

    //获取配置文件中的key对呀的value，如果未空，返回默认值
    public static String getProperty(String key, String defaultValue) {

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