Java 敏感词检测工具的实现
作者:一名技术极客
使用步骤
引入 Maven 依赖
引入最新的版本即可,见附录开源地址。
<dependency> <groupId>com.github.houbb</groupId> <artifactId>sensitive-word</artifactId> <version>0.18.0</version> </dependency>
核心方法使用实例
包含了主要的一些功能和方法,如下所示:
- 常规用法 查找替换;
- 指定替换字符串;
- 检测忽略大小写,特殊字符,重复字符,简繁体,中英文等;
- 自定义替换检测策略示例;
package com.example.demo; import com.github.houbb.sensitive.word.api.IWordContext; import com.github.houbb.sensitive.word.api.IWordReplace; import com.github.houbb.sensitive.word.api.IWordResult; import com.github.houbb.sensitive.word.bs.SensitiveWordBs; import com.github.houbb.sensitive.word.core.SensitiveWordHelper; import com.github.houbb.sensitive.word.support.result.WordResultHandlers; import com.github.houbb.sensitive.word.utils.InnerWordCharUtils; import java.util.List; public class SensitiveWordTestDemo { public static void main(String[] args) { //testNormal(); //testDefineReplace(); //testSensitiveWordResultHandler(); //testOtherFeatures(); testMoreFeatures(); } // 常规使用案例:替换敏感词 public static void testNormal() { final String text = "五星红旗迎风飘扬,毛主席的画像屹立在天安门前。"; System.out.println("是否包含铭感词:" + SensitiveWordHelper.contains(text)); System.out.println("查找第一个铭感词:" + SensitiveWordHelper.findFirst(text)); System.out.println("查找所有铭感词:" + SensitiveWordHelper.findAll(text)); System.out.println("替换所有铭感词:" + SensitiveWordHelper.replace(text)); System.out.println("替换所有铭感词(指定替换符号):" + SensitiveWordHelper.replace(text, '⭐')); } /** * 此案例讲解:IWordResultHandler 可以对敏感词的结果进行处理,允许用户自定义。 */ public static void testSensitiveWordResultHandler() { final String text = "五星红旗迎风飘扬,毛主席的画像屹立在天安门前。"; List<String> wordList = SensitiveWordHelper.findAll(text); //Assert.assertEquals("[五星红旗, 毛主席, 天安门]", wordList.toString()); System.out.println("1.查找到所有铭感词:" + wordList); List<String> wordList2 = SensitiveWordHelper.findAll(text, WordResultHandlers.word()); //Assert.assertEquals("[五星红旗, 毛主席, 天安门]", wordList2.toString()); System.out.println("2.默认内置处理(同直接查找到所有敏感词):" + wordList2); List<IWordResult> wordList3 = SensitiveWordHelper.findAll(text, WordResultHandlers.raw()); //Assert.assertEquals("[WordResult{startIndex=0, endIndex=4}, WordResult{startIndex=9, endIndex=12}, WordResult{startIndex=18, endIndex=21}]", wordList3.toString()); System.out.println("3.查找敏感词单词本身的起始位置到终止位置:" + wordList3); } // 实例:常规忽略检测特性 public static void testOtherFeatures() { System.out.println("\n其他属性\n"); String text = "fuCK the bad words."; String word = SensitiveWordHelper.findFirst(text); //Assert.assertEquals("fuCK", word); System.out.println("忽略大小写:" + word); System.out.println("替换大小写字符:" + SensitiveWordHelper.replace(text)); text = "fuck the bad words."; word = SensitiveWordHelper.findFirst(text); //Assert.assertEquals("fuck", word); System.out.println("忽略半圆角:" + word); System.out.println("替换半圆角字符:" + SensitiveWordHelper.replace(text)); text = "这个是我的微信:9⓿二肆⁹₈③⑸⒋➃㈤㊄"; List<String> wordList = SensitiveWordBs.newInstance().enableNumCheck(true).init().findAll(text); //Assert.assertEquals("[9⓿二肆⁹₈③⑸⒋➃㈤㊄]", wordList.toString()); System.out.println("忽略数字的写法:" + wordList.toString()); System.out.println("替换数字字符:" + SensitiveWordBs.newInstance().enableNumCheck(true).init().replace(text)); text = "我爱我的祖国和五星紅旗。"; List<String> wordList1 = SensitiveWordHelper.findAll(text); //Assert.assertEquals("[五星紅旗]", wordList1.toString()); System.out.println("检测敏感词简繁体格式是否存在:" + wordList1.toString()); text = "Ⓕⓤc⒦ the bad words"; List<String> wordList2 = SensitiveWordHelper.findAll(text); //Assert.assertEquals("[Ⓕⓤc⒦]", wordList2.toString()); System.out.println("检测敏感词是否存在英文的书写格式:" + wordList2.toString()); text = "ⒻⒻⒻfⓤuⓤ⒰cⓒ⒦ the bad words"; List<String> wordList3 = SensitiveWordBs.newInstance() .ignoreRepeat(true) .init() .findAll(text); //Assert.assertEquals("[ⒻⒻⒻfⓤuⓤ⒰cⓒ⒦]", wordList3.toString()); System.out.println("检测重复词每个字符是否重复:" + wordList3.toString()); } // 实例:更多检测特性 public static void testMoreFeatures() { // 1.邮箱检测(邮箱等个人信息,默认未启用。) String text = "楼主好人,邮箱 sensitiveword@xx.com"; List<String> wordList = SensitiveWordBs.newInstance().enableEmailCheck(true).init().findAll(text); //Assert.assertEquals("[sensitiveword@xx.com]", wordList.toString()); System.out.println("是否存在邮箱:" + wordList.toString()); // 2.连续数字检测(一般用于过滤手机号/QQ等广告信息,默认未启用。) text = "你懂得:12345678"; // 默认检测 8 位 List<String> wordList1 = SensitiveWordBs.newInstance() .enableNumCheck(true) .init().findAll(text); //Assert.assertEquals("[12345678]", wordList.toString()); System.out.println("是否存在连续数字字符串:" + wordList1); // 指定数字的长度,避免误杀 List<String> wordList2 = SensitiveWordBs.newInstance() .enableNumCheck(true) .numCheckLen(9) .init().findAll(text); //Assert.assertEquals("[]", wordList2.toString()); System.out.println("是否存在连续数字字符串2:" + wordList2.toString()); // 3.网址检测(用于过滤常见的网址信息,默认未启用, v0.18.0 优化 URL 检测,更加严格,降低误判率) text = "点击链接 https://www.baidu.com 查看答案"; SensitiveWordBs sensitiveWordBs = SensitiveWordBs.newInstance().enableUrlCheck(true).init(); List<String> wordList3 = sensitiveWordBs.findAll(text); //Assert.assertEquals("[https://www.baidu.com]", wordList3.toString()); //Assert.assertEquals("点击链接 ********************* 查看答案", sensitiveWordBs.replace(text)); System.out.println("是否存在网址信息:" + wordList3.toString()); System.out.println("是否存在网址信息2并替换:" + sensitiveWordBs.replace(text)); // 4.IPv4 检测: 避免用户通过 ip 绕过网址检测等,默认未启用。 text = "个人网站,如果网址打不开可以访问 127.0.0.1。"; SensitiveWordBs sensitiveWordBs2 = SensitiveWordBs.newInstance().enableIpv4Check(true).init(); List<String> wordList4 = sensitiveWordBs2.findAll(text); //Assert.assertEquals("[127.0.0.1]", wordList4.toString()); System.out.println("是否存在 IPv4:" + wordList4.toString()); } // 实例:自定义检测替换策略 public static void testDefineReplace() { System.out.println("自定义敏感词替换策略:(策略:指定敏感词替换)"); final String text = "五星红旗迎风飘扬,毛主席的画像屹立在天安门前。"; MySensitiveWordReplace replace = new MySensitiveWordReplace(); String result = SensitiveWordHelper.replace(text, replace); System.out.println("自定义替换策略结果:" + result); } } class MySensitiveWordReplace implements IWordReplace { @Override public void replace(StringBuilder stringBuilder, char[] chars, IWordResult wordResult, IWordContext iWordContext) { String sensitiveWord = InnerWordCharUtils.getString(chars, wordResult); // 自定义不同的敏感词替换策略,可以从数据库等地方读取 if ("五星红旗".equals(sensitiveWord)) { stringBuilder.append("国家旗帜"); } else if ("毛主席".equals(sensitiveWord)) { stringBuilder.append("教员"); } else { // 其他默认使用 * 代替 int wordLength = wordResult.endIndex() - wordResult.startIndex(); for (int i = 0; i < wordLength; i++) { stringBuilder.append('*'); } } } }
输出结果展示:
是否包含铭感词:true
查找第一个铭感词:五星红旗
查找所有铭感词:[五星红旗, 毛主席, 天安门]
替换所有铭感词:****迎风飘扬,***的画像屹立在***前。
替换所有铭感词(指定替换符号):⭐⭐⭐⭐迎风飘扬,⭐⭐⭐的画像屹立在⭐⭐⭐前。
自定义敏感词替换策略:(策略:指定敏感词替换)
自定义替换策略结果:国家旗帜迎风飘扬,教员的画像屹立在***前。
1.查找到所有铭感词:[五星红旗, 毛主席, 天安门]
2.默认内置处理(同直接查找到所有敏感词):[五星红旗, 毛主席, 天安门]
3.查找敏感词单词本身的起始位置到终止位置:[WordResult{startIndex=0, endIndex=4, type='WORD'}, WordResult{startIndex=9, endIndex=12, type='WORD'}, WordResult{startIndex=18, endIndex=21, type='WORD'}]其他属性
忽略大小写:fuCK
替换大小写字符:**** the bad words.
忽略半圆角:fuck
替换半圆角字符:**** the bad words.
忽略数字的写法:[9⓿二肆⁹₈③⑸⒋➃㈤㊄]
替换数字字符:这个是我的微信:************
检测敏感词简繁体格式是否存在:[五星紅旗]
检测敏感词是否存在英文的书写格式:[Ⓕⓤc⒦]
检测重复词每个字符是否重复:[ⒻⒻⒻfⓤuⓤ⒰cⓒ⒦]
是否存在邮箱:[sensitiveword@xx.com]
是否存在连续数字字符串:[12345678]
是否存在连续数字字符串2:[]
是否存在网址信息:[https://www.baidu.com]
是否存在网址信息2并替换:点击链接 ********************* 查看答案
是否存在 IPv4:[127.0.0.1]
核心方法:查找 / 替换
更多的检测策略(自定义)
邮箱-网址-IPV4-连续字符检测
// 实例:更多检测特性 public static void testMoreFeatures() { // 1.邮箱检测(邮箱等个人信息,默认未启用。) String text = "楼主好人,邮箱 sensitiveword@xx.com"; List<String> wordList = SensitiveWordBs.newInstance().enableEmailCheck(true).init().findAll(text); //Assert.assertEquals("[sensitiveword@xx.com]", wordList.toString()); System.out.println("是否存在邮箱:" + wordList.toString()); // 2.连续数字检测(一般用于过滤手机号/QQ等广告信息,默认未启用。) text = "你懂得:12345678"; // 默认检测 8 位 List<String> wordList1 = SensitiveWordBs.newInstance() .enableNumCheck(true) .init().findAll(text); //Assert.assertEquals("[12345678]", wordList.toString()); System.out.println("是否存在连续数字字符串:" + wordList1); // 指定数字的长度,避免误杀 List<String> wordList2 = SensitiveWordBs.newInstance() .enableNumCheck(true) .numCheckLen(9) .init().findAll(text); //Assert.assertEquals("[]", wordList2.toString()); System.out.println("是否存在连续数字字符串2:" + wordList2.toString()); // 3.网址检测(用于过滤常见的网址信息,默认未启用, v0.18.0 优化 URL 检测,更加严格,降低误判率) text = "点击链接 https://www.baidu.com 查看答案"; SensitiveWordBs sensitiveWordBs = SensitiveWordBs.newInstance().enableUrlCheck(true).init(); List<String> wordList3 = sensitiveWordBs.findAll(text); //Assert.assertEquals("[https://www.baidu.com]", wordList3.toString()); //Assert.assertEquals("点击链接 ********************* 查看答案", sensitiveWordBs.replace(text)); System.out.println("是否存在网址信息:" + wordList3.toString()); System.out.println("是否存在网址信息2并替换:" + sensitiveWordBs.replace(text)); // 4.IPv4 检测: 避免用户通过 ip 绕过网址检测等,默认未启用。 text = "个人网站,如果网址打不开可以访问 127.0.0.1。"; SensitiveWordBs sensitiveWordBs2 = SensitiveWordBs.newInstance().enableIpv4Check(true).init(); List<String> wordList4 = sensitiveWordBs2.findAll(text); //Assert.assertEquals("[127.0.0.1]", wordList4.toString()); System.out.println("是否存在 IPv4:" + wordList4.toString()); }
常规检测:大小写-特殊字符-重复字符-简繁体等
// 实例:常规忽略检测特性 public static void testOtherFeatures() { System.out.println("\n其他属性\n"); String text = "fuCK the bad words."; String word = SensitiveWordHelper.findFirst(text); //Assert.assertEquals("fuCK", word); System.out.println("忽略大小写:" + word); System.out.println("替换大小写字符:" + SensitiveWordHelper.replace(text)); text = "fuck the bad words."; word = SensitiveWordHelper.findFirst(text); //Assert.assertEquals("fuck", word); System.out.println("忽略半圆角:" + word); System.out.println("替换半圆角字符:" + SensitiveWordHelper.replace(text)); text = "这个是我的微信:9⓿二肆⁹₈③⑸⒋➃㈤㊄"; List<String> wordList = SensitiveWordBs.newInstance().enableNumCheck(true).init().findAll(text); //Assert.assertEquals("[9⓿二肆⁹₈③⑸⒋➃㈤㊄]", wordList.toString()); System.out.println("忽略数字的写法:" + wordList.toString()); System.out.println("替换数字字符:" + SensitiveWordBs.newInstance().enableNumCheck(true).init().replace(text)); text = "我爱我的祖国和五星紅旗。"; List<String> wordList1 = SensitiveWordHelper.findAll(text); //Assert.assertEquals("[五星紅旗]", wordList1.toString()); System.out.println("检测敏感词简繁体格式是否存在:" + wordList1.toString()); text = "Ⓕⓤc⒦ the bad words"; List<String> wordList2 = SensitiveWordHelper.findAll(text); //Assert.assertEquals("[Ⓕⓤc⒦]", wordList2.toString()); System.out.println("检测敏感词是否存在英文的书写格式:" + wordList2.toString()); text = "ⒻⒻⒻfⓤuⓤ⒰cⓒ⒦ the bad words"; List<String> wordList3 = SensitiveWordBs.newInstance() .ignoreRepeat(true) .init() .findAll(text); //Assert.assertEquals("[ⒻⒻⒻfⓤuⓤ⒰cⓒ⒦]", wordList3.toString()); System.out.println("检测重复词每个字符是否重复:" + wordList3.toString()); }
自定义检测替换策略
自定义检测替换
class MySensitiveWordReplace implements IWordReplace { @Override public void replace(StringBuilder stringBuilder, char[] chars, IWordResult wordResult, IWordContext iWordContext) { String sensitiveWord = InnerWordCharUtils.getString(chars, wordResult); // 自定义不同的敏感词替换策略,可以从数据库等地方读取 if ("五星红旗".equals(sensitiveWord)) { stringBuilder.append("国家旗帜"); } else if ("毛主席".equals(sensitiveWord)) { stringBuilder.append("教员"); } else { // 其他默认使用 * 代替 int wordLength = wordResult.endIndex() - wordResult.startIndex(); for (int i = 0; i < wordLength; i++) { stringBuilder.append('*'); } } } }
使用实例:
// 实例:自定义检测替换策略 public static void testDefineReplace() { System.out.println("自定义敏感词替换策略:(策略:指定敏感词替换)"); final String text = "五星红旗迎风飘扬,毛主席的画像屹立在天安门前。"; MySensitiveWordReplace replace = new MySensitiveWordReplace(); String result = SensitiveWordHelper.replace(text, replace); System.out.println("自定义替换策略结果:" + result); }
开源地址
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