这里描述操作elasticsearch采用TransportClient这种方式，官方明确表示在ES 7.0版本中将弃用TransportClient客户端，且在8.0版本中完全移除它.
记录一些常用的方法：
官方文档：
TransportClient
/**
* 简单查询es 指定index type id
*/
@Test
public void search() throws UnknownHostException {
//获取client
Settings settings= Settings.builder().put("cluster.name","my-application").build();
TransportClient transportClient=new PreBuiltTransportClient(settings);
transportClient.addTransportAddress(new
TransportAddress(InetAddress.getByName("localhost"),9300));
// 发起请求得到响应
GetResponse response=transportClient.prepareGet("index3","user3","10").get();
System.out.println(response.getSource());
}
/**
* 增加文档
*/
@Test
public void insert() throws Exception{
Settings settings= Settings.builder().put("cluster.name","my-application").build();
TransportClient client=new PreBuiltTransportClient(settings);
client.addTransportAddress(new TransportAddress(InetAddress.getByName("localhost"),9300));
XContentBuilder contentBuilder= XContentFactory.jsonBuilder()
.startObject()
.field("catid","22")
.field("classify",54)
.field("author","ssve")
.field("id","1")
.field("title","菜鸟成长记")
.endObject();
IndexResponse indexResponse = client.prepareIndex("index3", "user3", "10")
.setSource(contentBuilder)
.get();
System.out.println(indexResponse.status());
}
/**
* 删除文档
*/
@Test
public void delete() throws Exception{
Settings settings=Settings.builder().put("cluster.name","my-application").build();
TransportClient client=new PreBuiltTransportClient(settings);
client.addTransportAddress(new TransportAddress(InetAddress.getByName("localhost"),9300));
DeleteResponse deleteResponse = client.prepareDelete("index3", "user3", "10").get();
System.out.println(deleteResponse.status());
}
/**
* 修改文档
*/
@Test
public void update() throws Exception{
Settings settings=Settings.builder().put("cluster.name","my-application").build();
TransportClient client=new PreBuiltTransportClient(settings);
client.addTransportAddress(new TransportAddress(InetAddress.getByName("localhost"),9300));
UpdateRequest request=new UpdateRequest();
XContentBuilder contentBuilder=XContentFactory.jsonBuilder()
.startObject()
.field("id","555")
.endObject();
request.index("index3")
.type("user3")
.id("10")
.doc(contentBuilder);
UpdateResponse updateResponse = client.update(request).get();
System.out.println(updateResponse.status());
}
/**
*upsert使用 如有存在对应文档就修改 不存在就新增 需要指定修改的文档 和新增的文档
*/
@Test
public void upsert() throws IOException, ExecutionException, InterruptedException {
Settings settings=Settings.builder().put("cluster.name","my-application").build();
TransportClient client=new PreBuiltTransportClient(settings);
client.addTransportAddress(new TransportAddress(InetAddress.getByName("localhost"),9300));
XContentBuilder builder=XContentFactory.jsonBuilder()
.startObject()
.field("catid","22")
.field("classify",54)
.field("author","zhang")
.field("id","10")
.field("title","菜鸟成长记")
.endObject();
UpdateRequest request=new UpdateRequest();
IndexRequest indexRequest=new IndexRequest();
indexRequest.index("index3")
.type("user3")
.id("11")
.source(builder);
request.index("index3")
.type("user3")
.id("11")
.doc(new XContentFactory().jsonBuilder()
.startObject()
.field("id","i love you")
.endObject()
).upsert(indexRequest);
UpdateResponse updateResponse = client.update(request).get();
System.out.println(updateResponse.status());
}
/**
*
* 批量查询 multiGet
*/
@Test
public void multiGet() throws Exception{
Settings settings=Settings.builder().put("cluster.name","my-application").build();
TransportClient client=new PreBuiltTransportClient(settings);
client.addTransportAddress(new TransportAddress(InetAddress.getByName("localhost"),9300));
MultiGetRequest request=new MultiGetRequest();
request.add("index3","user3","11");
request.add("index3","user3","10");
request.add("index3","user3","13");
request.add("index3","user3","14");
MultiGetResponse multiGetItemResponses = client.multiGet(request).get();
for (MultiGetItemResponse response:multiGetItemResponses) {
System.out.println(response.getResponse().getSourceAsString());
}
}
/**
*
* bulk实现批量增删改操作。
*/
@Test
public void bulk() throws Exception{
Settings settings=Settings.builder().put("cluster.name","my-application").build();
TransportClient client=new PreBuiltTransportClient(settings);
client.addTransportAddress(new TransportAddress(InetAddress.getByName("localhost"),9300));
BulkRequestBuilder bulkRequestBuilder = client.prepareBulk();
IndexRequest request=new IndexRequest();
request.index("index3")
.type("user3")
.id("13")
.source(XContentFactory.jsonBuilder()
.startObject()
.field("catid","85")
.field("classify","85")
.field("author","宇宙无敌")
.field("id","漫威")
.field("title","漫威")
.endObject());
IndexRequest request1=new IndexRequest();
request1.index("index3")
.type("user3")
.id("14")
.source(XContentFactory.jsonBuilder()
.startObject()
.field("catid","55")
.field("classify","85")
.field("author","宇宙无敌")
.field("id","漫威")
.field("title","漫威")
.endObject());
bulkRequestBuilder.add(request1);
bulkRequestBuilder.add(request);
BulkResponse bulkItemResponses = bulkRequestBuilder.get();
System.out.println(bulkItemResponses.status());
}
/**
*
* 使用query查询 match_all 查询所有
*/
@Test
public void query() throws Exception{
Settings settings=Settings.builder().put("cluster.name","my-application").build();
TransportClient client=new PreBuiltTransportClient(settings);
client.addTransportAddress(new TransportAddress(InetAddress.getByName("localhost"),9300));
MatchAllQueryBuilder builder= QueryBuilders.matchAllQuery();
SearchRequestBuilder index3 = client.prepareSearch("index3")
.setQuery(builder)
.setSize(5);
SearchResponse searchResponse = index3.get();
SearchHits hits = searchResponse.getHits();
for (SearchHit hit:hits) {
System.out.println(hit.getSourceAsString());
}
}
/**
*
* 使用query查询 match 查询
*/
@Test
public void matchQuery() throws Exception{
Settings settings=Settings.builder().put("cluster.name","my-application").build();
TransportClient client=new PreBuiltTransportClient(settings);
client.addTransportAddress(new TransportAddress(InetAddress.getByName("localhost"),9300));
MatchQueryBuilder matchQueryBuilder = QueryBuilders.matchQuery("title", "爱");
SearchRequestBuilder index = client.prepareSearch("index3").setQuery(matchQueryBuilder).setSize(10);
SearchHits hits = index.get().getHits();
for (SearchHit hit:hits
) {
System.out.println(hit.getSourceAsString());
}
}
/**
*
* 使用query查询 mutilMatch 查询
*/
@Test
public void mutilMatchQuery() throws Exception{
Settings settings=Settings.builder().put("cluster.name","my-application").build();
TransportClient client=new PreBuiltTransportClient(settings);
client.addTransportAddress(new TransportAddress(InetAddress.getByName("localhost"),9300));
MultiMatchQueryBuilder multiMatchQueryBuilder = QueryBuilders.multiMatchQuery("周星驰影帝", "author","title");
SearchRequestBuilder index = client.prepareSearch("index3").setQuery(multiMatchQueryBuilder).setSize(10);
SearchHits hits = index.get().getHits();
for (SearchHit hit:hits
) {
System.out.println(hit.getSourceAsString());
}
}
/**
*
* 使用query查询 termheterms查询
*/
@Test
public void termsMatchQuery() throws Exception{
Settings settings=Settings.builder().put("cluster.name","my-application").build();
TransportClient client=new PreBuiltTransportClient(settings);
client.addTransportAddress(new TransportAddress(InetAddress.getByName("localhost"),9300));
TermsQueryBuilder termsQueryBuilder = QueryBuilders.termsQuery("title", "周星驰", "影帝");
SearchRequestBuilder index = client.prepareSearch("index3").setQuery(termsQueryBuilder).setSize(10);
SearchHits hits = index.get().getHits();
for (SearchHit hit:hits
) {
System.out.println(hit.getSourceAsString());
}
}
/**
*
* 使用query查询 范围 通配符 前缀 模糊查询
*/
@Test
public void query1() throws Exception{
Settings settings=Settings.builder().put("cluster.name","my-application").build();
TransportClient client=new PreBuiltTransportClient(settings);
client.addTransportAddress(new TransportAddress(InetAddress.getByName("localhost"),9300));
//范围查询
//QueryBuilder queryBuilder = QueryBuilders.rangeQuery("classify").from("1").to("40");
//通配符查询 * 零个或多个
// QueryBuilder queryBuilder = QueryBuilders.wildcardQuery("author","周*");
//前缀查询
// QueryBuilder queryBuilder = QueryBuilders.prefixQuery("author","周");
//模糊查询 查询类型的
// QueryBuilder queryBuilder = QueryBuilders.fuzzyQuery("id","aac");
//id查询
QueryBuilder queryBuilder = QueryBuilders.idsQuery().addIds("1","2","4");
SearchRequestBuilder index = client.prepareSearch("index3").setQuery(queryBuilder).setSize(10);
SearchHits hits = index.get().getHits();
for (SearchHit hit:hits
) {
System.out.println(hit.getSourceAsString());
}
}
/**
*
* 聚合查询
*/
@Test
public void aggregation() throws Exception{
Settings settings=Settings.builder().put("cluster.name","my-application").build();
TransportClient client=new PreBuiltTransportClient(settings);
client.addTransportAddress(new TransportAddress(InetAddress.getByName("localhost"),9300));
AggregationBuilder aggregationBuilder= AggregationBuilders.max("max").field("id");
SearchResponse index3 = client.prepareSearch("index3").addAggregation(aggregationBuilder).get();
Max max = index3.getAggregations().get("max");
System.out.println(max.getValue());
}
/**
*
* queryString
*/
@Test
public void queryString() throws Exception{
Settings settings=Settings.builder().put("cluster.name","my-application").build();
TransportClient client=new PreBuiltTransportClient(settings);
client.addTransportAddress(new TransportAddress(InetAddress.getByName("localhost"),9300));
// + 代表必须有 -代表没有
QueryBuilder queryBuilder=QueryBuilders.queryStringQuery("+周星驰 -sss");
SearchRequestBuilder index3 = client.prepareSearch("index3")
.setQuery(queryBuilder)
.setSize(10);
SearchResponse searchResponse = index3.get();
for (SearchHit hit:searchResponse.getHits()) {
System.out.println(hit.getSourceAsString());
}
}
/**
*
* 组合查询
*/
@Test
public void boolQuery() throws Exception{
Settings settings=Settings.builder().put("cluster.name","my-application").build();
TransportClient client=new PreBuiltTransportClient(settings);
client.addTransportAddress(new TransportAddress(InetAddress.getByName("localhost"),9300));
QueryBuilder queryBuilder=QueryBuilders.boolQuery()
.must(QueryBuilders.matchQuery("author","周星驰"))
.mustNot(QueryBuilders.matchQuery("title","梁朝伟"))
.should(QueryBuilders.matchQuery("title","影帝"))
.filter(QueryBuilders.rangeQuery("id").gte("1"));
SearchRequestBuilder index3 = client.prepareSearch("index3")
.setQuery(queryBuilder)
.setSize(10);
SearchResponse searchResponse = index3.get();
for (SearchHit hit:searchResponse.getHits()) {
System.out.println(hit.getSourceAsString());
}
}