Elasticsearch6(Transport Client)常用操作

1、创建Client

private TransportClient client;
@BeforeEach
public void test1() throws UnknownHostException {
    Settings settings = Settings.builder().put("cluster.name", "myes").build();
    client = new PreBuiltTransportClient(settings).addTransportAddress(new TransportAddress(InetAddress.getByName("node01"),9300)).addTransportAddress(new TransportAddress(InetAddress.getByName("node02"),9300));
}

2、自己拼装json创建索引保存到myindex1索引库下面的article当中去

/**
 * 插入json格式的索引数据
 */
@Test
public void createIndex(){
    String json = "{" +
            ""user":"kimchy"," +
            ""postDate":"2013-01-30"," +
            ""message":"travelying out Elasticsearch"" +
            "}";
    IndexResponse indexResponse = client.prepareIndex("myindex1", "article", "1").setSource(json, XContentType.JSON).get();
    client.close();
}

3、使用map创建索引

@Test
public void index2() throws Exception {
    HashMap<String, String> jsonMap = new HashMap<String, String>();
    jsonMap.put("name", "zhangsan");
    jsonMap.put("sex", "1");
    jsonMap.put("age", "18");
    jsonMap.put("address", "bj");
    IndexResponse indexResponse = client.prepareIndex("myindex1", "article", "2")
            .setSource(jsonMap)
            .get();
    client.close();
}

4、XcontentBuilder实现创建索引

/**
 * 通过XContentBuilder来实现索引的创建
 * @throws IOException
 */
@Test
public void index3() throws IOException {
    IndexResponse indexResponse = client.prepareIndex("myindex1", "article", "3")
            .setSource(new XContentFactory().jsonBuilder()
                    .startObject()
                    .field("name", "lisi")
                    .field("age", "18")
                    .field("sex", "0")
                    .field("address", "bj")
                    .endObject())
            .get();
    client.close();

}

5、将对象转换为json格式字符串进行创建索引

/**
 * 将java对象转换为json格式字符串进行创建索引
 */
@Test
public void objToIndex(){
    Person person = new Person();
    person.setAge(18);
    person.setId(20);
    person.setName("张三丰");
    person.setAddress("武当山");
    person.setEmail("zhangsanfeng@163.com");
    person.setPhone("18588888888");
    person.setSex(1);
    String json = JSONObject.toJSONString(person);
    System.out.println(json);
    client.prepareIndex("myindex1","article","32").setSource(json,XContentType.JSON).get();
    client.close();
}

6、批量创建索引

/**
 * 批量创建索引
 * @throws IOException
 */
@Test
public void index4() throws IOException {
    BulkRequestBuilder bulk = client.prepareBulk();
    bulk.add(client.prepareIndex("myindex1", "article", "4")
            .setSource(new XContentFactory().jsonBuilder()
                    .startObject()
                    .field("name", "wangwu")
                    .field("age", "18")
                    .field("sex", "0")
                    .field("address", "bj")
                    .endObject()));
    bulk.add(client.prepareIndex("news", "article", "5")
            .setSource(new XContentFactory().jsonBuilder()
                    .startObject()
                    .field("name", "zhaoliu")
                    .field("age", "18")
                    .field("sex", "0")
                    .field("address", "bj")
                    .endObject()));
    BulkResponse bulkResponse = bulk.get();
    System.out.println(bulkResponse);
    client.close();
}

2.更新索引

2.1根据系统给数据生成的id来进行更新索引

 

/**
 * 更新索引
 * 根据数据id来进行更新索引
 */
@Test
public void updateIndex(){
    Person guansheng = new Person(5, "宋江", 88, 0, "水泊梁山", "17666666666", "wusong@itcast.com","及时雨宋江");
    client.prepareUpdate().setIndex("myindex1").setType("article").setId("8")
            .setDoc(JSONObject.toJSONString(guansheng),XContentType.JSON)
            .get();
    client.close();
}

4、删除索引

4.1按照id进行删除

/**
 * 按照id进行删除数据
 */
@Test
public void deleteById(){
    DeleteResponse deleteResponse = client.prepareDelete("myindex1", "article", "8").get();
    client.close();
}

4.2删除整个索引库

/**
 * 删除索引
 * 删除整个索引库
 */
@Test
public  void  deleteIndex(){
    DeleteIndexResponse indexsearch = client.admin().indices().prepareDelete("myindex1").execute().actionGet();
    client.close();
}

5、查询索引

5.1初始化一批数据到索引库中准备查询

/**
 * 初始化一批数据到索引库当中去准备做查询使用
 * 注意这里初始化的时候，需要给我们的数据设置分词属性
 * @throws Exception
 */
@Test
public void createIndexBatch() throws Exception {
    Settings settings = Settings
            .builder()
            .put("cluster.name", "myes") //节点名称， 在es配置的时候设置
            //自动发现我们其他的es的服务器
            .put("client.transport.sniff", "true")
            .build();
    //创建客户端
    TransportClient client = new PreBuiltTransportClient(settings)
            .addTransportAddress(new TransportAddress(InetAddress.getByName("node01"), 9300));//以本机作为节点
    //创建映射
    XContentBuilder mapping = XContentFactory.jsonBuilder()
            .startObject()
            .startObject("properties")
            //      .startObject("m_id").field("type","keyword").endObject()
            .startObject("id").field("type", "integer").endObject()
            .startObject("name").field("type", "text").field("analyzer", "ik_max_word").endObject()
            .startObject("age").field("type", "integer").endObject()
            .startObject("sex").field("type", "text").field("analyzer", "ik_max_word").endObject()
            .startObject("address").field("type", "text").field("analyzer", "ik_max_word").endObject()
            .startObject("phone").field("type", "text").endObject()
            .startObject("email").field("type", "text").endObject()
            .startObject("say").field("type", "text").field("analyzer", "ik_max_word").endObject()
            .endObject()
            .endObject();
    //pois：索引名   cxyword：类型名（可以自己定义）
    PutMappingRequest putmap = Requests.putMappingRequest("indexsearch").type("mysearch").source(mapping);
    //创建索引
    client.admin().indices().prepareCreate("indexsearch").execute().actionGet();
    //为索引添加映射
    client.admin().indices().putMapping(putmap).actionGet();


    BulkRequestBuilder bulkRequestBuilder = client.prepareBulk();
    Person lujunyi = new Person(2, "玉麒麟卢俊义", 28, 1, "水泊梁山", "17666666666", "lujunyi@itcast.com","hello world今天天气还不错");
    Person wuyong = new Person(3, "智多星吴用", 45, 1, "水泊梁山", "17666666666", "wuyong@itcast.com","行走四方，抱打不平");
    Person gongsunsheng = new Person(4, "入云龙公孙胜", 30, 1, "水泊梁山", "17666666666", "gongsunsheng@itcast.com","走一个");
    Person guansheng = new Person(5, "大刀关胜", 42, 1, "水泊梁山", "17666666666", "wusong@itcast.com","我的大刀已经饥渴难耐");
    Person linchong = new Person(6, "豹子头林冲", 18, 1, "水泊梁山", "17666666666", "linchong@itcast.com","梁山好汉");
    Person qinming = new Person(7, "霹雳火秦明", 28, 1, "水泊梁山", "17666666666", "qinming@itcast.com","不太了解");
    Person huyanzhuo = new Person(8, "双鞭呼延灼", 25, 1, "水泊梁山", "17666666666", "huyanzhuo@itcast.com","不是很熟悉");
    Person huarong = new Person(9, "小李广花荣", 50, 1, "水泊梁山", "17666666666", "huarong@itcast.com","打酱油的");
    Person chaijin = new Person(10, "小旋风柴进", 32, 1, "水泊梁山", "17666666666", "chaijin@itcast.com","吓唬人的");
    Person zhisheng = new Person(13, "花和尚鲁智深", 15, 1, "水泊梁山", "17666666666", "luzhisheng@itcast.com","倒拔杨垂柳");
    Person wusong = new Person(14, "行者武松", 28, 1, "水泊梁山", "17666666666", "wusong@itcast.com","二营长。。。。。。");

    bulkRequestBuilder.add(client.prepareIndex("indexsearch", "mysearch", "1")
            .setSource(JSONObject.toJSONString(lujunyi), XContentType.JSON)
    );
    bulkRequestBuilder.add(client.prepareIndex("indexsearch", "mysearch", "2")
            .setSource(JSONObject.toJSONString(wuyong), XContentType.JSON)
    );
    bulkRequestBuilder.add(client.prepareIndex("indexsearch", "mysearch", "3")
            .setSource(JSONObject.toJSONString(gongsunsheng), XContentType.JSON)
    );
    bulkRequestBuilder.add(client.prepareIndex("indexsearch", "mysearch", "4")
            .setSource(JSONObject.toJSONString(guansheng), XContentType.JSON)
    );
    bulkRequestBuilder.add(client.prepareIndex("indexsearch", "mysearch", "5")
            .setSource(JSONObject.toJSONString(linchong), XContentType.JSON)
    );
    bulkRequestBuilder.add(client.prepareIndex("indexsearch", "mysearch", "6")
            .setSource(JSONObject.toJSONString(qinming), XContentType.JSON)
    );
    bulkRequestBuilder.add(client.prepareIndex("indexsearch", "mysearch", "7")
            .setSource(JSONObject.toJSONString(huyanzhuo), XContentType.JSON)
    );
    bulkRequestBuilder.add(client.prepareIndex("indexsearch", "mysearch", "8")
            .setSource(JSONObject.toJSONString(huarong), XContentType.JSON)
    );
    bulkRequestBuilder.add(client.prepareIndex("indexsearch", "mysearch", "9")
            .setSource(JSONObject.toJSONString(chaijin), XContentType.JSON)
    );
    bulkRequestBuilder.add(client.prepareIndex("indexsearch", "mysearch", "10")
            .setSource(JSONObject.toJSONString(zhisheng), XContentType.JSON)
    );
    bulkRequestBuilder.add(client.prepareIndex("indexsearch", "mysearch", "11")
            .setSource(JSONObject.toJSONString(wusong), XContentType.JSON)
    );

    bulkRequestBuilder.get();
    client.close();

}

5.2通过数据id使用prepareGet来查询索引

/**
 * 通过id来进行精确查询
 */
@Test
public void query1() {
    GetResponse documentFields = client.prepareGet("indexsearch", "mysearch", "11").get();
    String index = documentFields.getIndex();
    String type = documentFields.getType();
    String id = documentFields.getId();
    System.out.println(index);
    System.out.println(type);
    System.out.println(id);
    Map<String, Object> source = documentFields.getSource();
    for (String s : source.keySet()) {
        System.out.println(source.get(s));
    }
}

5.3查询索引库当中的所有数据

/**
 * 查询所有数据
 */
@Test
public void queryAll() {
    SearchResponse searchResponse = client
            .prepareSearch("indexsearch")
            .setTypes("mysearch")
            .setQuery(new MatchAllQueryBuilder())
            .get();
    SearchHits searchHits = searchResponse.getHits();
    SearchHit[] hits = searchHits.getHits();
    for (SearchHit hit : hits) {
        String sourceAsString = hit.getSourceAsString();
        System.out.println(sourceAsString);
    }
    client.close();
}

5.4RangeQuery范围值查询 

/**
 * 查找年龄18到28的人,包含18和28
 */
@Test
public void  rangeQuery(){
    SearchResponse searchResponse = client.prepareSearch("indexsearch")
            .setTypes("mysearch")
            .setQuery(new RangeQueryBuilder("age").gt(17).lt(29))
            .get();
    SearchHits hits = searchResponse.getHits();
    SearchHit[] hits1 = hits.getHits();
    for (SearchHit documentFields : hits1) {
        System.out.println(documentFields.getSourceAsString());
    }
    client.close();
}

5.5termQuery词条查询

/**
 * 词条查询
 */
@Test
public  void termQuery(){
    SearchResponse searchResponse = client.prepareSearch("indexsearch").setTypes("mysearch")
            .setQuery(new TermQueryBuilder("say", "熟悉"))
            .get();
    SearchHits hits = searchResponse.getHits();
    SearchHit[] hits1 = hits.getHits();
    for (SearchHit documentFields : hits1) {
        System.out.println(documentFields.getSourceAsString());
    }
}

5.6fuzzyQuery模糊查询

/**
 * fuzzyQuery表示英文单词的最大可纠正次数，最大可以自动纠正两次
 */
@Test
public void fuzzyQuery(){
    SearchResponse searchResponse = client.prepareSearch("indexsearch").setTypes("mysearch")
            .setQuery(QueryBuilders.fuzzyQuery("say", "helOL").fuzziness(Fuzziness.TWO))
            .get();
    SearchHits hits = searchResponse.getHits();
    SearchHit[] hits1 = hits.getHits();
    for (SearchHit documentFields : hits1) {
        System.out.println(documentFields.getSourceAsString());
    }
    client.close();
}

5.7wildCardQuery通配符查询

/**
 * 模糊匹配查询有两种匹配符，分别是" * " 以及 " ? "， 用" * "来匹配任何字符，包括空字符串。用" ? "来匹配任意的单个字符
 */
@Test
public void wildCardQueryTest(){
    SearchResponse searchResponse = client.prepareSearch("indexsearch").setTypes("mysearch")
            .setQuery(QueryBuilders.wildcardQuery("say", "hel*"))
            .get();
    SearchHits hits = searchResponse.getHits();
    SearchHit[] hits1 = hits.getHits();
    for (SearchHit documentFields : hits1) {
        System.out.println(documentFields.getSourceAsString());
    }
    client.close();
}

5.8boolQuery 多条件组合查询

/**
 * 多条件组合查询 boolQuery
 * 查询年龄是18到28范围内且性别是男性的，或者id范围在10到13范围内的
 *
 */
@Test
public void boolQueryTest(){
    RangeQueryBuilder age = QueryBuilders.rangeQuery("age").gt(17).lt(29);
    TermQueryBuilder sex = QueryBuilders.termQuery("sex", "1");
    RangeQueryBuilder id = QueryBuilders.rangeQuery("id").gt("9").lt("15");

    SearchResponse searchResponse = client.prepareSearch("indexsearch").setTypes("mysearch")
            .setQuery(
                    QueryBuilders.boolQuery().should(id)
           .should(QueryBuilders.boolQuery().must(sex).must(age)))
            .get();
    SearchHits hits = searchResponse.getHits();
    SearchHit[] hits1 = hits.getHits();
    for (SearchHit documentFields : hits1) {
        System.out.println(documentFields.getSourceAsString());
    }
    client.close();
}

6.分页与高亮查询

/*分页查询
 */
@Test
public void getPageIndex(){
    int  pageSize = 5;
    int pageNum = 2;
    int startNum = (pageNum-1)*5;
    SearchResponse searchResponse = client.prepareSearch("indexsearch")
            .setTypes("mysearch")
            .setQuery(QueryBuilders.matchAllQuery())
            .addSort("id",SortOrder.ASC)
            .setFrom(startNum)
            .setSize(pageSize)
            .get();
    SearchHits hits = searchResponse.getHits();
    SearchHit[] hits1 = hits.getHits();
    for (SearchHit documentFields : hits1) {
        System.out.println(documentFields.getSourceAsString());
    }
    client.close();
}