Java正则——正则表达式打印异常栈信息

需要用到hutool工具包

测试用例代码,输出异常栈前3行代码:

String str = "java.lang.StringIndexOutOfBoundsException: String index out of range: 299\n" +
        "\tat java.lang.String.substring(String.java:1963)\n" +
        "\tat com.zenxton.exception.BusinessException.test1(BusinessException.java:32)\n" +
        "\tat com.zenxton.exception.BusinessException.test2(BusinessException.java:45)\n" +
        "\tat com.zenxton.exception.BusinessException.test2(BusinessException.java:45)\n" +
        "\tat com.zenxton.exception.BusinessException.test2(BusinessException.java:45)\n" +
        "\tat com.zenxton.exception.BusinessException.test2(BusinessException.java:45)\n" +
        "\tat com.zenxton.exception.BusinessException.test2(BusinessException.java:45)\n" +
        "\tat com.zenxton.exception.BusinessException.main(BusinessException.java:20)";

String resultExtractMulti = ReUtil.extractMulti("([\\S\\s]*?\n)([\\S\\s]*?\n)([\\S\\s]*?\n)", str, "$1-$2-$3");
System.out.println(resultExtractMulti);