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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 property;
static {
// 配置文件路径
String filename = "config.properties";
property = new Properties();
try {
// 加载配置文件
property.load(new InputStreamReader(PropertiesUtil.class.getClassLoader().getResourceAsStream(filename)));
} catch (IOException e) {
logger.error("配置文件读取异常", e);
}
}
// trim()方法=>去掉字符串两边到空格
public static String getProperty(String key) {
String value = property.getProperty(key.trim());
if (StringUtils.isBlank(value)) {
return null;
}
return value.trim();
}
// 默认值
public static String getProperty(String key, String defaultValue) {
String value = property.getProperty(key.trim());
if (StringUtils.isBlank(value)) {
value = defaultValue;
}
return value.trim();
}
}