返回列表 使用Spring Boot从Elastic Search查询结果中返回

Question

我一直在使用Elastic Search版本5.6.16和Spring Boot。我想基于字符串进行搜索。为此，我编写了以下代码。

Controller.java

public @ResponseBody String getItem(@RequestParam("data") String data) {
    QueryBuilder qb = QueryBuilders.queryStringQuery(data);
    SearchResponse searchResponse = client.prepareSearch("index")
      .setTypes("default").setQuery(qb).setSize(10).execute().actionGet();
    return  searchResponse;
}

此方法返回String。但是我想得到结果为List <Student>。其中Student类为：

Student.java

@Getter
@Setter
@AllArgsConstructor
@ToString
public class Student {

    private int id;
    private int name;
}

我正在上传ES索引上的“学生”数据。请让我知道如何从ES获得List的结果

Answer 1

也许此更改将帮助您取得进展：

public @ResponseBody String getItem(@RequestParam("data") String data) {

    List<Student> records = new ArrayList<Student>(); 
    QueryBuilder qb = QueryBuilders.queryStringQuery(data);
    SearchResponse searchResponse = client.prepareSearch("index")
      .setTypes("default").setQuery(qb).setSize(10).execute().actionGet();
    SearchHit[] results = response.getHits().getHits();
    for(SearchHit hit : results){

        String source = hit.getSourceAsString();
        Student s = objectMapper.readValue(source,Student.class);
        records.add(s);
    }
    return  records;
}

objectMapper