用java代码实现敏感字体检测

以下是一个简单的Java代码示例，用于实现敏感字体检测：

import java.util.*;

public class SensitiveWordFilter {
    private TrieNode rootNode;

    public SensitiveWordFilter(Set<String> sensitiveWords) {
        rootNode = new TrieNode();
        for (String word : sensitiveWords) {
            addWordToTrie(word);
        }
    }

    private void addWordToTrie(String word) {
        TrieNode node = rootNode;
        for (char c : word.toCharArray()) {
            node = node.addChild(c);
        }
        node.setEndOfWord(true);
    }

    public String filter(String text) {
        StringBuilder result = new StringBuilder();
        TrieNode node = rootNode;
        int start = 0;
        for (int i = 0; i < text.length(); i++) {
            char c = text.charAt(i);
            if (node.hasChild(c)) {
                node = node.getChild(c);
                if (node.isEndOfWord()) {
                    result.append("*".repeat(i - start + 1));
                    start = i + 1;
                    node = rootNode;
                }
            } else {
                result.append(text.charAt(start));
                start++;
                i = start - 1;
                node = rootNode;
            }
        }
        result.append(text.substring(start));
        return result.toString();
    }

    private static class TrieNode {
        private Map<Character, TrieNode> children;
        private boolean endOfWord;

        public TrieNode() {
            children = new HashMap<>();
        }

        public TrieNode addChild(char c) {
            return children.computeIfAbsent(c, key -> new TrieNode());
        }

        public TrieNode getChild(char c) {
            return children.get(c);
        }

        public boolean hasChild(char c) {
            return children.containsKey(c);
        }

        public boolean isEndOfWord() {
            return endOfWord;
        }

        public void setEndOfWord(boolean endOfWord) {
            this.endOfWord = endOfWord;
        }
    }
}

使用示例：

Set<String> sensitiveWords = new HashSet<>(Arrays.asList("敏感词1", "敏感词2", "敏感词3"));
SensitiveWordFilter filter = new SensitiveWordFilter(sensitiveWords);
String text = "这是一段包含敏感词1和敏感词2的文本";
String filteredText = filter.filter(text);
System.out.println(filteredText); // 这是一段包含******和******的文本

该示例中，SensitiveWordFilter类实现了敏感字体检测功能，构造函数接收一个敏感词列表，将其中的每个词汇添加到Trie树中。filter方法接收一个文本，从文本的起点开始，依次将每个字符添加到Trie树中进行匹配，如果匹配到了一个敏感词，则将该敏感词替换为"*"。