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常用一些jar的引用、常用的返回异常分页的实体类
There is a newer version: 1.3.2
package top.doudou.core.util;

import org.apache.commons.lang3.StringUtils;

import java.util.Arrays;

/**
 * @Description 日志工具类
 *   给日志上色
 *   适用于这种日志的格式 %date{yyyy-MM-dd HH:mm:ss}  [%-5level]  [%thread]  %logger{96}  [%line] - %msg%n
 * @Author 傻男人 <[email protected]>
 * @Date 2020-10-22 11:03
 * @Version V1.0
 */
public class LogUtil {

    private static final String TIME_FORMAT = "[\\d+][\\d+][\\d+][\\d+]-[\\d+][\\d+]-[\\d+][\\d+] [\\d+][\\d+]:[\\d+][\\d+]:[\\d+][\\d+]";
    private static final String DEBUG = "";
    private static final String INFO = "";
    private static final String WARN = "";
    private static final String ERROR = "";
    private static final String BLACK = "";
    private static final String SPACE = " ";
    private static final String SHORT_SPACE = "   ";
    private static final String LONG_SPACE = "        ";
    private static final String SPAN_OVER = "";
    private static final int FIRST_MAX = 400;
    private static final String STDOUT_CONSOLE = "StdoutListener$$EnhancerBySpringCGLIB$$";
    private static final String STDOUT_CONSOLE_SPLIT = "StdoutListener\\$\\$EnhancerBySpringCGLIB\\$\\$";
    private static final String REG_EXP = "\\w+\\s*\\[\\d+\\]\\s*-\\s*";
    private static final String SPLIT = "  ";

    /**
     * 将日志上色，方便前端展示时，为不同的颜色的日志
     * @param line
     * @return
     */
    public static String toColor(String line){
        if(line.contains(STDOUT_CONSOLE)){
            String result = line.split(STDOUT_CONSOLE_SPLIT)[1].replaceFirst(REG_EXP,"");
            return "
"+result;
        }

        //先转义
        line = line.replaceAll("&", "&")
                .replaceAll("<", "<")
                .replaceAll(">", ">")
                .replaceAll("\"", """);

        //处理等级
        line = line.replace("DEBUG", DEBUG + "DEBUG"+SPAN_OVER);
        line = line.replace("INFO", INFO + "INFO"+SPAN_OVER);
        line = line.replace("WARN", WARN + "WARN"+SPAN_OVER);
        line = line.replace("ERROR", ERROR + "ERROR"+SPAN_OVER);
        StringBuffer sb = new StringBuffer("
");
        //处理类名
        String[] split = line.split(SPLIT);
        if(split.length >= 5 ){
            sb.append(split[0]).append(SHORT_SPACE)
                    .append(split[1]).append(SHORT_SPACE)
                    .append(split[2]).append(SHORT_SPACE)
                    .append(BLACK).append(split[3]).append(SPAN_OVER).append(SHORT_SPACE);
            String[] temp = split[4].split("-");
            if(temp.length > 1){
                sb.append(temp[0]).append(messageColor(sb.toString(),temp,1));
            }else {
                sb.append(split[4]);
            }
            if(split.length > 5){
                sb.append(messageColor(sb.toString(),split,5));
            }
        }
        if(sb.length() <= 5){
            if(line.startsWith("\tat ")){
                sb.append(ERROR).append(LONG_SPACE).append(line).append(SPAN_OVER);
            }else {
                sb.append(line);
            }
        }
        // 匹配日期开头加换行，2019-08-12 14:15:04
//        Pattern r = Pattern.compile(TIME_FORMAT);
//        Matcher m = r.matcher(line);
//        if (m.find( )) {
//            //找到下标
//            int start = m.start();
//            sb.insert(start,"
");
//        }
        return sb.toString();
    }

    public static void main(String[] args) {
        System.out.println(toColor("2020-10-23 10:37:19  [INFO ]  [Thread-34]  top.doudou.core.config.StdoutListener$$EnhancerBySpringCGLIB$$633c4e2e  [24] - 2020-10-23 10:37:19"));
    }

    /**
     * 将后面的日志上色
     * @param line
     * @param temp
     * @param startLen
     * @return
     */
    private static String messageColor(String line,String[] temp,int startLen){
        if(temp.length <= 1 ){
            return "";
        }
        StringBuilder sb = new StringBuilder();
        for (int i = startLen; i < temp.length; i++) {
            sb.append(SPLIT+temp[i]);
        }
        StringBuilder message = new StringBuilder();
        message.append(SHORT_SPACE);
        if(line.contains(DEBUG)){
            message.append(DEBUG);
        }else if(line.contains(INFO)){
            message.append(INFO);
        }else if(line.contains(WARN)){
            message.append(WARN);
        }else if(line.contains(ERROR)){
            message.append(ERROR);
        }
        message.append(sb);
        message.append(SPAN_OVER);
        return message.toString();
    }

    /**
     * 日志的处理
     * @param lines
     * @param first
     * @return
     */
    public static String handler(Object[] lines,boolean first){
        //对日志进行着色，更加美观  PS：注意，这里要根据日志生成规则来操作
        for (int i = 0; i < lines.length; i++) {
            lines[i] = LogUtil.toColor((String) lines[i]);
        }

        //第一次如果太大，截取最新的200行就够了，避免传输的数据太大
        if(first && lines.length > FIRST_MAX){
            lines = Arrays.copyOfRange(lines, lines.length - FIRST_MAX, lines.length);
            first = false;
        }
        return StringUtils.join(lines, "");
    }

}