SpringBoot论坛项目-过滤敏感词

原理

将敏感词存入前缀树中，使用前缀树来过滤待处理的字符串。

代码实现如下

package com.gyc.community.util;

import com.sun.org.apache.bcel.internal.generic.FSUB;
import org.apache.commons.lang3.CharUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Component;

import javax.annotation.PostConstruct;
import java.io.BufferedReader;
import java.io.IOException;
import java.io.InputStream;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.Map;

@Component
public class SensitiveFilter {
   


    private static final Logger logger = LoggerFactory.getLogger(SensitiveFilter.class);

    //替换符
    private static final String REPLACEMENT = "***";

    //根节点
    private TrieNode rootNode = new TrieNode();

    @PostConstruct
    public void init(){
   

        try(
                InputStream inputStream = this.getClass().getClassLoader().getResourceAsStream("sensitive-words.txt");
                BufferedReader reader = new BufferedReader(new InputStreamReader(inputStream));)
        {