logback用java代码创建logger

直接贴代码

import ch.qos.logback.classic.Level;
import ch.qos.logback.classic.Logger;
import ch.qos.logback.classic.LoggerContext;
import ch.qos.logback.classic.encoder.PatternLayoutEncoder;
import ch.qos.logback.core.rolling.RollingFileAppender;
import ch.qos.logback.core.rolling.TimeBasedRollingPolicy;
import org.slf4j.LoggerFactory;

import java.nio.charset.Charset;

class LogbackUtils {
    private static Logger logger = null;
    static  {

        String path = System.getProperty("log.path");
        if (StringUtils.isEmpty(path)) {
            path = ".";
        }
        String logFile = path + "/my_log_file.log";
        System.out.println(logFile);

        LoggerContext context = (LoggerContext) LoggerFactory.getILoggerFactory();

        // 编码器
        PatternLayoutEncoder encoder = new PatternLayoutEncoder();
        encoder.setContext(context);
        encoder.setPattern("%m%n");
        encoder.setCharset(Charset.forName("UTF-8"));
        encoder.start();

        // 滚动策略
        TimeBasedRollingPolicy rollingPolicy = new TimeBasedRollingPolicy();
        rollingPolicy.setContext(context);
        rollingPolicy.setFileNamePattern(logFile + ".%d{yyyy-MM-dd}");
        rollingPolicy.setMaxHistory(2);

        // appender
        RollingFileAppender appender = new RollingFileAppender();
        appender.setContext(context);
        appender.setEncoder(encoder);
        appender.setFile(logFile);
        appender.setRollingPolicy(rollingPolicy);
        rollingPolicy.setParent(appender);
        rollingPolicy.start();
        appender.start();

        // logger
        logger = (Logger) LoggerFactory.getLogger("my_logger");
        logger.setLevel(Level.DEBUG);
        logger.addAppender(appender);
    }

    static void info(String sql) {
        logger.info(sql);
    }


}