Java HighlightField.fragments方法代码示例

import org.elasticsearch.search.highlight.HighlightField; //导入方法依赖的package包/类
public <T> T mapEntity(String source , SearchHit hit , Class<T> clazz) {
	T t = mapEntity(source , clazz) ;
	
	Map<String, HighlightField> highlightFields = hit.getHighlightFields();
	HighlightField highlightNameField = highlightFields.get("title");
	HighlightField contentHightlightField = highlightFields.get("content");
	try {
		if(highlightNameField!=null&&highlightNameField.fragments()!=null){
			PropertyUtils.setProperty(t, "title" , highlightNameField.fragments()[0].string());
		}
		if(contentHightlightField!=null){
			PropertyUtils.setProperty(t, "content" , contentHightlightField.fragments()[0].string());
		}
		PropertyUtils.setProperty(t, "id" , hit.getId());
	} catch (IllegalAccessException | InvocationTargetException | NoSuchMethodException e) {
		e.printStackTrace();
	} 
	return t;
}
 

import org.elasticsearch.search.highlight.HighlightField; //导入方法依赖的package包/类
/**
 * 对搜索命中结果做高亮
 *
 * @param json
 * @param hit
 * @param highLigthFieldName
 */
private void highLightResult (JSONObject json, SearchHit hit, String highLigthFieldName) {
    //获取对应的高亮域
    Map<String, HighlightField> result = hit.highlightFields();
    //从设定的高亮域中取得指定域
    HighlightField hlField = result.get(highLigthFieldName);
    if (Check.NuNObj(hlField)) {
        return;
    }
    //取得定义的高亮标签
    Text[] hlTexts = hlField.fragments();
    if (Check.NuNObject(hlTexts)) {
        return;
    }
    //为title串值增加自定义的高亮标签
    StringBuffer hlTextsFiled = new StringBuffer();
    for (Text text : hlTexts) {
        hlTextsFiled.append(text);
    }
    //如果高亮域内有fragments 反回的数据不为空字符串
    if (!Check.NuNStrStrict(hlTextsFiled.toString())) {
        json.put(highLigthFieldName, hlTextsFiled);
    }
}
 

import org.elasticsearch.search.highlight.HighlightField; //导入方法依赖的package包/类
/**
 * 
 * @param hit
 * @param seach_fileds
 * @return
 */
public static Map<String, Object> getHighlight(SearchHit hit, List<String> seach_fileds) {
    Map<String, Object> result = new HashMap<String, Object>();
    Map<String, HighlightField> highlights = hit.highlightFields();
    for (String filed : seach_fileds) {
        HighlightField highlight = highlights.get(filed);
        if (null == highlight) {
            continue;
        }
        StringBuffer sb = new StringBuffer();
        Text[] fragments = highlight.fragments();
        for (Text fragment : fragments) {
            sb.append(fragment);
        }
        result.put(filed + "_HIGH", sb.toString());
    }
    return result;

}
 

import org.elasticsearch.search.highlight.HighlightField; //导入方法依赖的package包/类
private static Map<String, HighlightResult> getHighlightsFromResult(SearchHits hits) {
    final HashMap<String, HighlightResult> highlights = new HashMap<>();
    for (final SearchHit hit : hits) {
        final HighlightResult result = new HighlightResult(new HashMap<String, List<String>>());
        final Collection<HighlightField> highlightFields = hit.getHighlightFields().values();
        for (final HighlightField entry : highlightFields) {
            final List<String> fragments = new ArrayList<>();
            final Text[] frags = entry.fragments();
            for (final Text t : frags) {
                fragments.add(t.toString());
            }
            result.putToResults(entry.getName(), fragments);
        }
        highlights.put(hit.getId(), result);
    }
    return highlights;
}
 

import org.elasticsearch.search.highlight.HighlightField; //导入方法依赖的package包/类
@Override
public <T> AggregatedPage<T> mapResults(SearchResponse response, Class<T> clazz, Pageable pageable) {
    List<File> result = new ArrayList<>();
    long totalHits = response.getHits().getTotalHits();
    for (SearchHit searchHit : response.getHits()) {
        if (response.getHits().getHits().length <= 0) {
            return null;
        }

        //System.out.println(response.toString());

        String summaryWithHighlight = null;
        String pathWithHighlight = null;
        HighlightField highlightFieldContent = searchHit.getHighlightFields().get("content");
        HighlightField highlightFieldPath = searchHit.getHighlightFields().get("path");
        if (highlightFieldContent != null) {
            summaryWithHighlight = Arrays.stream(highlightFieldContent.fragments())
                .map(text -> EncodingUtil.convertToUTF8(text.toString()))
                .collect(Collectors.joining("\n[...]\n"));
        }
        if (highlightFieldPath != null && highlightFieldPath.fragments() != null) {
            pathWithHighlight = EncodingUtil.unEscapeString(highlightFieldPath.fragments()[0].toString());
        }
        File oneFile = new File(
            (String) searchHit.getSource().get("id"),
            (String) searchHit.getSource().get("name"),
            (String) searchHit.getSource().get("extension"),
            pathWithHighlight != null ? pathWithHighlight : (String) searchHit.getSource().get("path"),
            (String) searchHit.getSource().get("project"),
            summaryWithHighlight,
            (String) searchHit.getSource().get("version"),
            //conversion en string puis en long, très bizarre, à l'origine, il était préférable de réaliser :
            //(Long) searchHit.getSource().get("size")
            //mais cela jette un classCastException Integer to Long
            Long.valueOf(searchHit.getSource().get("size").toString())
        );
        oneFile.setScore(searchHit.getScore());
        result.add(oneFile);
    }
    return new AggregatedPageImpl<>((List<T>) result, pageable, totalHits, response.getAggregations());
}