java操作elasticsearch實現query String

1、CommonTersQuery: 指定字段進行模糊查詢

//commonTermsQuery
@Test
public void test35() throws UnknownHostException{
    //1、指定es集群  cluster.name 是固定的key值，my-application是ES集群的名稱
    Settings settings = Settings.builder().put("cluster.name", "my-application").build();
    //2.創建訪問ES服務器的客戶端
    TransportClient client = new PreBuiltTransportClient(settings)
            .addTransportAddress(new TransportAddress(InetAddress.getByName("192.168.1.94"), 9300));
    QueryBuilder builder = QueryBuilders.commonTermsQuery("name","zhaoliu");
    SearchResponse response = client.prepareSearch("lib3").setQuery(builder).get();
    SearchHits hits = response.getHits();
    for(SearchHit hit:hits) {
        System.out.println(hit.getSourceAsString());
        //將獲取的值轉換成map的形式
        Map<String, Object> map = hit.getSourceAsMap();
        for(String key:map.keySet()) {
            System.out.println(key +" key對應的值為：" +map.get(key));
        }
    }
}

 

2、queryStringQuery：

　　說明：根據值去每個字段進行模糊查詢 +代表必須含有  -代表不能含有

//queryStringQuery  根據值去每個字段進行模糊查詢 +代表必須含有  -代表不能含有
@Test
public void test36() throws UnknownHostException{
    //1、指定es集群  cluster.name 是固定的key值，my-application是ES集群的名稱
    Settings settings = Settings.builder().put("cluster.name", "my-application").build();
    //2.創建訪問ES服務器的客戶端
    TransportClient client = new PreBuiltTransportClient(settings)
            .addTransportAddress(new TransportAddress(InetAddress.getByName("192.168.1.94"), 9300));
    //查詢文檔中含必須含有changge，不含有hejiu的文檔（會每個字段去查詢）+代表必須含有  -代表不能含有
    QueryBuilder builder = QueryBuilders.queryStringQuery("+changge  -hejiu");
    SearchResponse response = client.prepareSearch("lib3").setQuery(builder).get();
    SearchHits hits = response.getHits();
    for(SearchHit hit:hits) {
        System.out.println(hit.getSourceAsString());
        //將獲取的值轉換成map的形式
        Map<String, Object> map = hit.getSourceAsMap();
        for(String key:map.keySet()) {
            System.out.println(key +" key對應的值為：" +map.get(key));
        }
    }
}

 

3、simpleQueryStringQuery  

　　說明：根據值去每個字段進行模糊查詢 只要有一個符合就會返回該文章

 

 

//simpleQueryStringQuery  根據值去每個字段進行模糊查詢 只要有一個符合就會返回該文章
@Test
public void test37() throws UnknownHostException{
    //1、指定es集群  cluster.name 是固定的key值，my-application是ES集群的名稱
    Settings settings = Settings.builder().put("cluster.name", "my-application").build();
    //2.創建訪問ES服務器的客戶端
    TransportClient client = new PreBuiltTransportClient(settings)
            .addTransportAddress(new TransportAddress(InetAddress.getByName("192.168.1.94"), 9300));
    //只要所有字段中，含有changge或hejiui的都返回
    QueryBuilder builder = QueryBuilders.simpleQueryStringQuery("changge  hejiu");
    SearchResponse response = client.prepareSearch("lib3").setQuery(builder).get();
    SearchHits hits = response.getHits();
    for(SearchHit hit:hits) {
        System.out.println(hit.getSourceAsString());
        //將獲取的值轉換成map的形式
        Map<String, Object> map = hit.getSourceAsMap();
        for(String key:map.keySet()) {
            System.out.println(key +" key對應的值為：" +map.get(key));
        }
    }
}

下一篇博客本人將書寫java操作elasticsearch實現組合桶聚合。對后期博客感興趣的朋友可以關注交流，轉發請說明出處，本人的博客地址為：https://www.cnblogs.com/chenyuanbo/

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