查询结果高亮显示

代码实现：

/**
 * 高亮显示
 * 1:通过关键词进行查询
 * 2：对关键词进行高亮的显示
 * 3: 高亮显示的内容替换原有内容
 * */
@Test
public void searchHightLight() throws IOException {
    //1:通过关键词进行查询
    SearchRequestBuilder builder = transportClient.prepareSearch("sanguo").setTypes("dahan")
            .setQuery(QueryBuilders.fuzzyQuery("address", "北京"));
    //2：对查询出来的关键词设置高亮--关键词
    HighlightBuilder highlightBuilder = new HighlightBuilder();
    highlightBuilder.field("address");
    highlightBuilder.preTags("<em>");//前置元素
    highlightBuilder.postTags("</em>");//后置元素
    //将高亮设置信息放入查询条件中
    builder.highlighter(highlightBuilder);
    SearchResponse searchResponse = builder.get();
    SearchHits hits = searchResponse.getHits();
    Iterator<SearchHit> iterator = hits.iterator();
    ObjectMapper objectMapper = new ObjectMapper();
    while (iterator.hasNext()){
        SearchHit searchHitFields = iterator.next();
        //将高亮处理后的内容，替换原有的内容
        Map<String, HighlightField> highlightFields = searchHitFields.getHighlightFields();
        HighlightField content = highlightFields.get("address");
        //fragments就是高亮显示的片段
        Text[] fragments = content.fragments();
        StringBuffer sb = new StringBuffer();
        //拼接查询出来的高亮片段
        for (Text text:fragments){
            sb.append(text);
        }
        //将查询结果转化为对象--因为我们要进行替换，所以要转化成对象，然后直接将高亮片段替换原有对象内容
        Article article = objectMapper.readValue(searchHitFields.getSourceAsString() , Article.class);
        //开始进行高亮替换，但是要做一次校验，因为可能查询不到具体内容，那么就是没有高亮显示的，所以不要把空内容替换原有内容
        if(sb.toString() != null || !"".equals(sb.toString())){
            //替换
            article.setAddress(sb.toString());
        }
        System.out.println(article.toString());
    }
}
​
​

编写Article实体类：

​
​
/**
 * Created by angel；
 */
public class Article {
    private String studentNo;
    private String name;
    private String male;
    private String age;
    private String birthday;
    private String classNo;
    private String address;
    private String isLeader;
​
    public void setAddress(String address) {
        this.address = address;
    }
​
    public void setAge(String age) {
        this.age = age;
    }
​
    public void setBirthday(String birthday) {
        this.birthday = birthday;
    }
​
    public void setClassNo(String classNo) {
        this.classNo = classNo;
    }
​
    public void setMale(String male) {
        this.male = male;
    }
​
    public void setName(String name) {
        this.name = name;
    }
​
    public void setStudentNo(String studentNo) {
        this.studentNo = studentNo;
    }
​
    public void setIsLeader(String isLeader) {
        this.isLeader = isLeader;
    }
​
    public String getAddress() {
        return address;
    }
​
    public String getAge() {
        return age;
    }
​
    public String getMale() {
        return male;
    }
​
    public String getBirthday() {
        return birthday;
    }
​
    public String getClassNo() {
        return classNo;
    }
​
    public String getIsLeader() {
        return isLeader;
    }
​
    public String getName() {
        return name;
    }
​
    public String getStudentNo() {
        return studentNo;
    }
​
    @Override
    public String toString() {
        return "[studentNO:"+studentNo+" name: +"+name+" age :"+age+" birthday: "+birthday+" classNo: "+classNo+" address: "+address+" isLeader: "+isLeader+"]";
    }
}
​
​