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The spring component framework is used to setup a plugin based, micro-kernel, standalone application (today, we will support webapp in later releases) which is based on SpringFramework. It can help you decouple your application into several components clearly with zero invasion and keep your application consistent between develop time and runtime.

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/**
 * @author XiongJie, Date: 13-10-23
 */
package net.happyonroad.util;

/** a simple log utils */
public class LogUtils {
    private LogUtils() {
    }

    /**
     * 输出一条Banner消息
     *
     * @param format    Banner消息格式，内嵌 {}作为占位符，语法应该与Slf4j的一样
     * @param alignLeft 左边对其的宽度
     * @param total     总宽度，在保证左对齐宽度的前提下，总的字符串宽度，如果内容超过，则进行截断
     * @param args      日志的参数
     * @return 可以输出的日志
     */
    public static String banner(String format, int alignLeft, int total, Object... args) {
        String message = format;
        for (Object arg : args) {
            message = message.replaceFirst("\\{\\}", arg == null ? "null" : arg.toString());
        }
        StringBuilder builder = new StringBuilder();
        for (int i = 0; i < alignLeft - 1; i++)
            builder.append("*");
        builder.append(" ");
        if (total > alignLeft + message.length()) {
            builder.append(message);
            builder.append(" ");
            for (int i = 0; i < total - 1 - alignLeft - message.length(); i++)
                builder.append("*");
        } else {
            builder.append(message.substring(0, total - alignLeft));
        }
        return builder.toString();
    }

    /**
     * 按照左对齐9个*号 + 1个空格，总长度为140进行默认banner格式化
     *
     * @param format Banner消息格式，内嵌 {}作为占位符，语法应该与Slf4j的一样
     * @param args   日志的参数
     * @return 可以输出的日志
     */
    public static String banner(String format, Object... args) {
        return banner(format, 10, 120, args);
    }
}