ElasticSearch原生接口

最后更新:2025-07-02 23:32:15 | 状态:未完成 | 相关数据库: ElasticSearch-Elasticsearch
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import org.elasticsearch.client.Request;
import org.elasticsearch.client.Response;
import org.elasticsearch.client.RestClient;
/*
PUT index_user/_bulk
{"index":{"_index":"index_user", "_id":"10011"}}
{"id":1001, "name":"a b", "age":20}
{"index":{"_index":"index_user", "_id":"10012"}}
{"id":1002, "name":"b c", "age":20}
{"index":{"_index":"index_user", "_id":"10013"}}
{"id":1003, "name":"c d", "age":30}*/
 
 
public boolean inserts(String table, Collection list){
    boolean result = false;
    String pk = "_id";
    String method = "PUT";
    String endpoint = table+"/_bulk";
    String body = null;
    StringBuilder builder = new StringBuilder();
    for(Object entity:list){
        Object _id = BeanUtil.getFieldValue(entity, pk);
        if (null == _id) {
            pk = "id";
            _id = BeanUtil.getFieldValue(entity, pk);
        }
        builder.append("{\"index\":{\"_index\":\"").append(table).append("\", \"_id\":\"").append(_id).append("\"}}\n");
        builder.append(BeanUtil.object2json(entity)).append("\n");
    }
    Request request = new Request(
        method,
        endpoint);
    body = BeanUtil.object2json(builder.toString());
    request.setJsonEntity(body);
    HttpResponse response = exe(request);
    if(response.getStatus() == 200 ||  response.getStatus() == 201){
        result = true;
    }
    return result;
}
 
/**
 *PUT index_user/_bulk
 * {"index":{"_index":"index_user", "_id":"10011"}}
 * {"id":1001, "name":"a b", "age":20}
 * {"index":{"_index":"index_user", "_id":"10012"}}
 * {"id":1002, "name":"b c", "age":20}
 * {"index":{"_index":"index_user", "_id":"10013"}}
 * {"id":1003, "name":"c d", "age":30}
 * @param table
 * @param set
 * @return
 */
public boolean insert(String table, DataSet set){
    boolean result = false;
    String method = "PUT";
    String endpoint = "*/_bulk";
    String body = null;
    StringBuilder builder = new StringBuilder();
    for(DataRow row:set){
        String pk = "_id";
        Object _id = BeanUtil.getFieldValue(row, pk);
        if (null == _id) {
            pk = "id";
            _id = BeanUtil.getFieldValue(row, pk);
        }
        row.remove("_id");
        builder.append("{\"index\":{\"_index\":\"").append(table).append("\", \"_id\":\"").append(_id).append("\"}}\n");
        builder.append(row.toJSON().replace(">","&gt;").replace("<","&lt;")).append("\n");
    }
    Request request = new Request(
        method,
        endpoint);
    body = builder.toString();
    request.setJsonEntity(body);
    HttpResponse response = exe(request);
    return result;
}
public boolean insert(String table, DataRow entity){
    boolean result = false;
    String pk = "_id";
    String method = "POST";
    String endpoint = null;
    String body = null;
    //一般需要设置用于索引的主键 如法规id = l100 问答id = q100
    Object _id = BeanUtil.getFieldValue(entity, pk);
    if (null == _id) {
        pk = "id";
        _id = BeanUtil.getFieldValue(entity, pk);
    }
    endpoint = table + "/_doc/";
    if (BasicUtil.isNotEmpty(_id)) {
        method = "PUT";
        endpoint += _id;
    }
    entity.remove("_id");
    Request request = new Request(
        method,
        endpoint);
    body = BeanUtil.object2json(entity).replace(">","&gt;").replace("<","&lt;");
    request.setJsonEntity(body);
    HttpResponse response = exe(request);
    if(BasicUtil.isEmpty(_id)){
        DataRow row = DataRow.parse(response.getText());
        _id = row.getString(pk);
        if(BasicUtil.isNotEmpty(_id)){
            BeanUtil.setFieldValue(entity, pk, _id);
        }
    }
    return result;
}
 
private HttpResponse exe(Request request){
    HttpResponse result = new HttpResponse();
    try {
        Response response = ((RestClient)RuntimeHolder.runtime().getProcessor()).performRequest(request);
        int status = response.getStatusLine().getStatusCode();
        result.setStatus(status);
        //{"_index":"index_user","_id":"102","_version":3,"result":"updated","_shards":{"total":2,"successful":2,"failed":0},"_seq_no":9,"_primary_term":1}
        String content = FileUtil.read(response.getEntity().getContent()).toString();
        result.setText(content);
        log.warn("[status:{}]", status);
    }catch (Exception e){
        e.printStackTrace();
    }
    return result;
}
public DataSet search(String table, DataRow body){
    DataSet set = null;
    String method = "POST";
    String endpoint = table+"/_search";
    Request request = new Request(
        method,
        endpoint);
    String json = body.toLowerKey(true).toJSON();
    log.warn("[search][body:{}]", body);
    request.setJsonEntity(json);
    HttpResponse response = exe(request);
    if(response.getStatus() == 200) {
        String txt = response.getText();
        DataRow row = DataRow.parseJson(txt);
        Object total = row.get("hits", "total", "value");
        PageNavi navi = new DefaultPageNavi();
        navi.setTotalRow(BasicUtil.parseInt(total,0));
        navi.setPageRows(body.getInt("size", 10));
        set = new DataSet();
        set.setNavi(navi);
        DataSet hits = row.getRow("hits").getSet("hits");
        for(DataRow hit:hits){
            DataRow item = hit.getRow("_source");
            item.put("_id", hit.get("_id"));
            DataRow highlight = hit.getRow("highlight");
            if(null != highlight){
                for(String key:highlight.keySet()){
                    List vals = highlight.getList(key);
                    if(null != vals && vals.size()>0){
                        item.put(key, vals.get(0));
                    }
                }
            }
            set.add(item);
        }
 
    }
    return set;
}
/*GET _analyze
{
"analyzer": "ik_max_word",
"text": ["马铃薯真好吃"]
}
*/
public LinkedHashMap<String,DataRow> analyze(String key){
    return analyze(key, null);
}
public LinkedHashMap<String,DataRow> analyze(String key, String mode){
    LinkedHashMap<String,DataRow> maps = new LinkedHashMap<>();
    DataRow body = new DataRow(KeyAdapter.KEY_CASE.SRC);
    if(BasicUtil.isEmpty(mode)){
        mode = "ik_smart";
    }
    body.put("analyzer", mode);
    body.put("text", new String[]{key});
 
    Request request = new Request(
        "GET",
        "_analyze");
    request.setJsonEntity(BeanUtil.object2json(body));
    HttpResponse response = exe(request);
    if(response.getStatus() == 200) {
        DataRow row = DataRow.parseJson(response.getText());
        DataSet tokens = row.getSet("tokens");
        for(DataRow token:tokens){
            String k = token.getString("token");
            if(k.length() > 1){
                maps.put(k, token);
            }
        }
    }
    return maps;
}
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