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使用Spring Boot手写10万敏感词检查程序

本文将介绍如何使用Spring Boot构建一个高效的敏感词检查系统，能够处理多达10万个敏感词的检测需求。我们将使用DFA（Deterministic Finite Automaton）算法来实现高效匹配，并提供RESTful API接口。

实现步骤

1. 创建Spring Boot项目

首先使用Spring Initializr创建一个新的Spring Boot项目，添加Web依赖：

<dependencies><dependency><groupId>org.springframework.boot</groupId><artifactId>spring-boot-starter-web</artifactId></dependency>
</dependencies>

2. 实现DFA算法敏感词检测

创建敏感词检测服务类：

@Service
public class SensitiveWordFilter {private Map<Object, Object> sensitiveWordMap;@PostConstructpublic void init() {// 从文件或数据库加载敏感词Set<String> sensitiveWords = loadSensitiveWords();// 构建DFA模型sensitiveWordMap = buildDFAModel(sensitiveWords);}private Set<String> loadSensitiveWords() {// 这里可以从文件、数据库或其他存储加载敏感词// 示例代码中硬编码部分敏感词，实际应替换为从文件读取Set<String> sensitiveWords = new HashSet<>();sensitiveWords.add("敏感词1");sensitiveWords.add("敏感词2");// ... 添加更多敏感词return sensitiveWords;}private Map<Object, Object> buildDFAModel(Set<String> sensitiveWords) {Map<Object, Object> model = new HashMap<>(sensitiveWords.size());Map<Object, Object> currentMap;for (String word : sensitiveWords) {currentMap = model;for (int i = 0; i < word.length(); i++) {char c = word.charAt(i);Object wordMap = currentMap.get(c);if (wordMap == null) {wordMap = new HashMap<>();currentMap