java 日志脱敏处理

package com.itheima.utils;

import org.apache.commons.lang3.StringUtils;

import java.util.function.Function;
import java.util.regex.Matcher;
import java.util.regex.Pattern;

public class AnonymityTools {
    // 邮箱正则
    private static Pattern emailPattern = Pattern.compile("(\\b[A-Za-z0-9._%+-]+@[A-Za-z0-9.-]+\\.[A-Z|a-z]{2,}\\b)");
    // 手机正则
    private static Pattern phonePattern = Pattern.compile("(\\b1[0-9]\\d{9}\\b)");

    public static String anonymize(Matcher matcher, Function<String, String> anonymizeFunction) {
        // 匹配正则
        StringBuffer result = new StringBuffer();
        while (matcher.find()) {
            int start = matcher.start();
            String hitResult = matcher.group(1);
            matcher.appendReplacement(result, anonymizeFunction.apply(hitResult));
        }
        matcher.appendTail(result);
        return result.toString();
    }

    public static String anonymizeEmail(String content) {
        if (StringUtils.isEmpty(content)) {
            return content;
        }
        return anonymize(emailPattern.matcher(content), new Function<String, String>() {
            @Override
            public String apply(String hitResult) {
                // todo email匿名化规则
                int atIndex = hitResult.indexOf('@');
                String username = hitResult.substring(0, atIndex);
                String domain = hitResult.substring(atIndex);
                return username.substring(0, 3) + "*****" + domain;
            }
        });
    }

    public static String anonymizePhone(String content) {
        if (StringUtils.isEmpty(content)) {
            return content;
        }
        // todo 手机号匿名化规则
        return anonymize(phonePattern.matcher(content), hitResult -> hitResult.substring(0, 3) + "****" + hitResult.substring(7));
    }

    public static void main(String[] args) {
        String content = "longlinji@huawei.com,longlinji@huawei.com,longlinji@huawei.com,This is 15361826615 test email: test@example.com and phone: 13812345678,12345678911-12345678911*12345678911+12345678911";
        String anonymizeEmail = anonymizeEmail(content);
        String anonymizePhone = anonymizePhone(anonymizeEmail);
        System.out.println(anonymizePhone);
    }
}

测试用例：
1.  输入空字符串
2.  输入不含邮箱和手机号的字符串
3.  输入仅含邮箱的字符串，包括多个邮箱，邮箱在字符串开始、中间、结尾，邮箱前后有其他字符等情况
4.  输入仅含手机号的字符串，包括多个手机号，手机号在字符串开始、中间、结尾，手机号前后有其他字符等情况
5.  输入既含手机号又含邮箱的字符串，包括多个手机号和邮箱，电话和邮箱在字符串开始、中间、结尾，前后有其他字符等情况
6.  输入邮箱和手机号混合，并且邮箱和手机号重叠在一起的情况
7.  输入邮箱或手机号含有特殊字符（如空格、货币符号等）的情况

单元测试：
@Test
public void testAnonymizeEmail() {
    String content = "longlinji@huawei.com,longlinji@huawei.com,longlinji@huawei.com,This is a test email: test@example.com and phone: 13812345678,12345678911-12345678911*12345678911 12345678911";
    String expected = "longl*****i@huawei.com,longl*****i@huawei.com,longl*****i@huawei.com,This is a test email: t*****@example.com and phone: 13812345678,12345678911-12345678911*12345678911 12345678911";
    String actual = AnonymityTools.anonymizeEmail(content);
    assertEquals(expected, actual);
}

@Test
public void testAnonymizePhone() {
    String content = "longlinji@huawei.com,longlinji@huawei.com,longlinji@huawei.com,This is a test email: test@example.com and phone: 13812345678,12345678911-12345678911*12345678911 12345678911";
    String expected = "longlinji@huawei.com,longlinji@huawei.com,longlinji@huawei.com,This is a test email: test@example.com and phone: 138****5678,123****8911-123****8911*123****8911 123****8911";
    String actual = AnonymityTools.anonymizePhone(content);
    assertEquals(expected, actual);
}

package com.itheima;

import com.itheima.utils.AnonymityTools;
import org.junit.Assert;
import org.junit.Test;

public class AnonymityToolsTest {
    @Test
    public void testAnonymizeEmail() {
        String expected = "123*****@test.com";
        String actual = AnonymityTools.anonymizeEmail("1234567890@test.com");
        Assert.assertEquals(expected, actual);
    }

    @Test
    public void testAnonymizePhone() {
        String expected = "138****1234";
        String actual = AnonymityTools.anonymizePhone("13812341234");
        Assert.assertEquals(expected, actual);
    }
}