Question

我在这里有这个示例日志文件：

LOG FILE: 
Jan 1 22:54:17 drop   %LOGSOURCE% >eth1 rule: 7; rule_uid: {C1336766-9489-4049-9817-50584D83A245};
Jan 1 22:54:22 drop   %LOGSOURCE% >eth1 rule: 7; rule_uid: {C1336766-9489-4049-9817-50584D83A245};
Jan 1 22:54:23 drop   %LOGSOURCE% >eth1 rule: 7; rule_uid: {C1336766-9489-4049-9817-50584D83A245};
Jan 1 22:54:41 drop   %LOGSOURCE% >eth1 rule: 7; rule_uid: {C1336766-9489-4049-9817-50584D83A245};

默认分隔符是分号（;），我想分隔时间戳和“drop”，以及带有该分隔符的“drop”和“％LOGSOURCE％”。我运行了代码（见下文，它是成功的，但我没有得到我预期的结果。整个代码是插入分隔符。）

我的代码：公共类LogParser {

    List<String> temps = new ArrayList<String>();

    // while loop
    while (inFile1.hasNext()) {
        // find next line
        String token1 = inFile1.next();
        temps.add(token1);
    }
    inFile1.close();

    String[] tempsArray = temps.toArray(new String[0]);

    for (String s : tempsArray) {
        Pattern p = Pattern.compile("([a-zA-Z]{3}\\s\\d{1,2}\\s\\d{2}:\\d{2}:\\d{2})(\\s)(drop)");
        Matcher matcher = p.matcher(s);
        while (matcher.find()) {
            //System.out.println(matcher.group(0));
        }
        //System.out.println(s);
    }

Answer 1

如果您想使用正则表达式，可以使用：

([a-zA-Z]{3}\\s\\d{1,2}\\s\\d{2}:\\d{2}:\\d{2})(\s)(drop)

作为正则表达式replaceAll，替换为$1; $3。

如果您没有在java中运行正则表达式而不需要转义\，请尝试：

([a-zA-Z]{3}\s\d{1,2}\s\d{2}:\d{2}:\d{2})(\s)(drop)

输出：

LOG FILE: 
Jan 1 22:54:17; drop   %LOGSOURCE% >eth1 rule: 7; rule_uid: {C1336766-9489-4049-9817-50584D83A245};
Jan 1 22:54:22; drop   %LOGSOURCE% >eth1 rule: 7; rule_uid: {C1336766-9489-4049-9817-50584D83A245};
Jan 1 22:54:23; drop   %LOGSOURCE% >eth1 rule: 7; rule_uid: {C1336766-9489-4049-9817-50584D83A245};
Jan 1 22:54:41; drop   %LOGSOURCE% >eth1 rule: 7; rule_uid: {C1336766-9489-4049-9817-50584D83A245};

如何在Java中的字符串之间添加分隔符？

1 个答案: