Java优化模糊搜索体验的方法详解

SELECT id, name FROM t_course WHERE name LIKE '%2025数学高一下%';

public class JcSegUtils {
    private static final SegmenterConfig CONFIG = new SegmenterConfig(true);
    private static final ADictionary DIC = DictionaryFactory.createSingletonDictionary(CONFIG);

    public static List<String> segment(String text) throws IOException {
        ISegment seg = ISegment.NLP.factory.create(CONFIG, DIC);
        seg.reset(new StringReader(text));
        IWord word;
        List<String> result = new ArrayList<>();
        while ((word = seg.next()) != null) {
            String wordText = word.getValue();
            if (StringUtils.isNotBlank(wordText)) {
                result.add(wordText);
            }
        }
        return result;
    }
}

public class WordSegmentationUtils {
    private static final List<String> DICT;
    private static final String COURSE_SEARCH_KEYWORD_LIST = "数学,物理,化学,生物,地理,历史,政治,英语,语文,高中,高一,高二,高三";

    static {
        DICT = new ArrayList<>();
        for (int i = 2018; i <= 2099; i++) {
            DICT.add(String.valueOf(i));
        }
        DICT.addAll(Arrays.asList(COURSE_SEARCH_KEYWORD_LIST.split(",")));
    }

    public static List<String> segment(String text) {
        if (StringUtils.isBlank(text)) {
            return new ArrayList<>();
        }
        List<String> segments = new ArrayList<>();
        segments.add(text);
        for (String word : DICT) {
            segments = segment(segments, word);
        }
        return segments;
    }

    private static List<String> segment(List<String> segments, String word) {
        List<String> newSegments = new ArrayList<>();
        for (String segment : segments) {
            if (segment.contains(word)) {
                newSegments.add(word);
                String[] split = segment.split(word);
                for (String s : split) {
                    if (StringUtils.isNotBlank(s)) {
                        newSegments.add(s.trim());
                    }
                }
            } else {
                newSegments.add(segment);
            }
        }
        return newSegments;
    }
}