1、搭建spring boot 项目，pom.xml引入依赖如下：
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.mybatis.spring.boot</groupId>
<artifactId>mybatis-spring-boot-starter</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.elasticsearch</groupId>
<artifactId>elasticsearch</artifactId>
<version>6.2.1</version>
</dependency>
<dependency>
<groupId>org.elasticsearch.client</groupId>
<artifactId>elasticsearch-rest-high-level-client</artifactId>
<version>6.2.1</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.12</version>
</dependency>
<dependency>
<groupId>com.alibaba</groupId>
<artifactId>fastjson</artifactId>
<version>1.2.44</version>
</dependency>
</dependencies>2、编写测试代码进行ElesticSearch操作
创建：RestHighLevelClient
@Before
public void prepare() {
// 创建Client连接对象
//String[] ips = {"127.0.0.1:9200"};
String[] ips = {"47.104.193.89:9200", "47.104.180.62:9200"};
HttpHost[] httpHosts = new HttpHost[ips.length];
for (int i = 0; i < ips.length; i++) {
httpHosts[i] = HttpHost.create( ips[i] );
}
RestClientBuilder builder = RestClient.builder( httpHosts );
client = new RestHighLevelClient( builder );
}2.1 创建索引和映射
/**
* 创建索引 和 映射
*
* @throws IOException
*/
@Test
public void createIndex() throws IOException {
//创建名称为blog2的索
CreateIndexRequest request = new CreateIndexRequest( "blog1" );
//设置映射 doc type名称
request.mapping( "doc", " {\n" +
" \t\"properties\": {\n" +
" \"name\": {\n" +
" \"type\": \"text\",\n" +
" \"analyzer\":\"ik_max_word\",\n" +
" \"search_analyzer\":\"ik_smart\"\n" +
" },\n" +
" \"description\": {\n" +
" \"type\": \"text\",\n" +
" \"analyzer\":\"ik_max_word\",\n" +
" \"search_analyzer\":\"ik_smart\"\n" +
" },\n" +
" \"studymodel\": {\n" +
" \"type\": \"keyword\"\n" +
" },\n" +
" \"price\": {\n" +
" \"type\": \"float\"\n" +
" }\n" +
" }\n" +
"}", XContentType.JSON );
CreateIndexResponse createIndexResponse = client.indices().create( request );
System.out.println( JSON.toJSONString( createIndexResponse ) );
//释放资源
client.close();
}2.2 删除索引
/**
* 删除索引
*/
//删除索引库
@Test
public void testDeleteIndex() throws IOException {
//删除索引请求对象
DeleteIndexRequest deleteIndexRequest = new DeleteIndexRequest( "doc" );
//删除索引
DeleteIndexResponse deleteIndexResponse = client.indices().delete( deleteIndexRequest );
//删除索引响应结果
boolean acknowledged = deleteIndexResponse.isAcknowledged();
System.out.println( acknowledged );
}2.3 插入文档
/**
* 插入文档
*/
@Test
public void testAddDocument() throws IOException {
//准备json数据
Map<String, Object> jsonMap = new HashMap<>();
jsonMap.put( "name", "11spring cloud实战" );
jsonMap.put( "description", "11本课程主要从四个章节进行讲解： 1.微服务架构入门 2.spring cloud基础入门 3.实战Spring Boot 4.注册中心eureka。" );
jsonMap.put( "studymodel", "201001" );
jsonMap.put( "price", 5.6f );
//索引请求对象
IndexRequest indexRequest = new IndexRequest( "blog1", "doc" ).id( "11" );
//指定索引文档内容
indexRequest.source( jsonMap );
//索引响应对象
IndexResponse index = client.index( indexRequest );
//获取响应结果
DocWriteResponse.Result result = index.getResult();
System.out.println( result );
}2.4 更新文档
/**
* 更新文档
*/
@Test
public void updateDocument() throws IOException {
UpdateRequest updateRequest = new UpdateRequest( "blog1", "doc", "11" );
Map<String, String> map = new HashMap<>();
map.put( "name", "spring cloud实战222" );
updateRequest.doc( map );
UpdateResponse update = client.update( updateRequest );
RestStatus status = update.status();
System.out.println( status );
}2.5 删除文档
/**
* 删除文档
*/
@Test
public void deleteDocument() throws IOException {
String id = "AXIDNJoC19Z06cvw7_Gv";
DeleteRequest deleteRequest = new DeleteRequest( "blog2", "doc", id );
DeleteResponse delete = client.delete( deleteRequest );
System.out.println( delete.status() );
}2.6 根据ID查询
/**
* 查询文档 根据ID查询
*/
@Test
public void getDocumentById() throws IOException {
GetRequest getRequest = new GetRequest( "blog1", "doc", "11" );
GetResponse response = client.get( getRequest );
boolean exists = response.isExists();
Map<String, Object> sourceAsMap = response.getSourceAsMap();
System.out.println( sourceAsMap );
}2.7 查询所有文档
/**
* 搜索管理 查询所有文档
*/
@Test
public void testSearchAll() throws IOException {
SearchRequest searchRequest = new SearchRequest( "blog1" );
searchRequest.types( "doc" );
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
searchSourceBuilder.query( QueryBuilders.matchAllQuery() );
//source源字段过虑
searchSourceBuilder.fetchSource( new String[]{"name", "studymodel", "description"}, new String[]{} );
searchRequest.source( searchSourceBuilder );
SearchResponse searchResponse = client.search( searchRequest );
SearchHits hits = searchResponse.getHits();
long totalHits = hits.getTotalHits();
System.out.println( "total=" + totalHits );
SearchHit[] searchHits = hits.getHits();
for (SearchHit searchHit : searchHits) {
String index = searchHit.getIndex();
System.out.println( "index=" + index );
String id = searchHit.getId();
System.out.println( "id=" + id );
String sourceAsString = searchHit.getSourceAsString();
System.out.println( sourceAsString );
Map<String, Object> sourceAsMap = searchHit.getSourceAsMap();
//String articleId = String.valueOf( sourceAsMap.get( "id" ) );
String title = (String) sourceAsMap.get( "name" );
String content = (String) sourceAsMap.get( "description" );
//System.out.println("articleId="+articleId);
System.out.println( "title=" + title );
System.out.println( "content=" + content );
}
}2.8 分页查询
/**
* 搜索管理 分页查询
*/
@Test
public void testSearchByPage() throws IOException {
//设置要查询的索引 和 type
SearchRequest searchRequest = new SearchRequest( "blog1" );
searchRequest.types( "doc" );
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
searchSourceBuilder.query( QueryBuilders.matchAllQuery() );
//分页查询，设置起始下标，从0开始
searchSourceBuilder.from( 0 );
//每页显示个数
searchSourceBuilder.size( 2 );
//source源字段过虑
//searchSourceBuilder.fetchSource(new String[]{"title","id","content"},new String[]{} );
searchSourceBuilder.fetchSource( new String[]{"name", "studymodel", "description"}, new String[]{} );
searchRequest.source( searchSourceBuilder );
SearchResponse search = client.search( searchRequest );
SearchHits hits = search.getHits();
long totalHits = hits.getTotalHits();
System.out.println( totalHits );
for (SearchHit searchHit : hits.getHits()) {
String sourceAsString = searchHit.getSourceAsString();
System.out.println( sourceAsString );
}
}2.9 TeamQuey搜索
/**
* 搜索管理 Term Query精确查找 ，在搜索时会整体匹配关键字，不再将关键字分词 ，
* 下面的语句：查询title 包含 spring 的文档
*/
@Test
public void testSearchTerm() throws IOException {
//创建查询，设置索引
SearchRequest searchRequest = new SearchRequest( "blog1" );
//设置type
searchRequest.types( "doc" );
//设置查询条件
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
searchSourceBuilder.query( QueryBuilders.termQuery( "name", "spring" ) );
//source源字段过虑
//searchSourceBuilder.fetchSource(new String[]{"title","id","content"},new String[]{});
searchSourceBuilder.fetchSource( new String[]{"name", "studymodel", "description"}, new String[]{} );
searchRequest.source( searchSourceBuilder );
SearchResponse search = client.search( searchRequest );
SearchHits hits = search.getHits();
long totalHits = hits.getTotalHits();
System.out.println( "总条数：" + totalHits );
for (SearchHit searchHit : hits.getHits()) {
String sourceAsString = searchHit.getSourceAsString();
System.out.println( sourceAsString );
}
}2.10 根据多个ID查询
/**
* 搜索管理 根据ID查询
*/
@Test
public void testSearchByID() throws IOException {
//创建查询，设置索引
SearchRequest searchRequest = new SearchRequest( "blog1" );
//设置type
searchRequest.types( "doc" );
//设置查询条件
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
String[] ids = {"11", "12"};
List<String> stringList = Arrays.asList( ids );
searchSourceBuilder.query( QueryBuilders.termsQuery( "_id", stringList ) );
//source源字段过虑
searchSourceBuilder.fetchSource( new String[]{"name", "studymodel", "description"}, new String[]{} );
searchRequest.source( searchSourceBuilder );
SearchResponse search = client.search( searchRequest );
SearchHits hits = search.getHits();
long totalHits = hits.getTotalHits();
System.out.println( "总条数：" + totalHits );
for (SearchHit searchHit : hits.getHits()) {
String sourceAsString = searchHit.getSourceAsString();
System.out.println( sourceAsString );
}
}2.11 match Query
/**
* 搜索管理 match query 先分词后查找 minimum_should_match （如果实现三个词至少有两个词匹配如何实现）
*/
@Test
public void testSearchMatchMinimnum() throws IOException {
//创建查询，设置索引
SearchRequest searchRequest = new SearchRequest( "blog1" );
//设置type
searchRequest.types( "doc" );
//设置查询条件
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
//匹配关键字
searchSourceBuilder.query( QueryBuilders.matchQuery( "name", "spring开发" ).minimumShouldMatch( "60%" ) );
//source源字段过虑
searchSourceBuilder.fetchSource( new String[]{"name", "studymodel", "description"}, new String[]{} );
searchRequest.source( searchSourceBuilder );
SearchResponse search = client.search( searchRequest );
SearchHits hits = search.getHits();
long totalHits = hits.getTotalHits();
System.out.println( "总条数：" + totalHits );
for (SearchHit searchHit : hits.getHits()) {
String sourceAsString = searchHit.getSourceAsString();
System.out.println( sourceAsString );
}
}2.12 同时搜索多个Field
/**
* 搜索管理 同时搜索多个Field
*/
@Test
public void testSearchMultiMatch() throws IOException {
//创建查询，设置索引
SearchRequest searchRequest = new SearchRequest( "blog1" );
//设置type
searchRequest.types( "doc" );
//设置查询条件
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
//匹配关键字
MultiMatchQueryBuilder multiMatchQueryBuilder = QueryBuilders.multiMatchQuery( "Boot 开发", "name", "description" )
.minimumShouldMatch( "50%" );
multiMatchQueryBuilder.field( "name", 10 );//提升boost 表示权重提升10倍
searchSourceBuilder.query( multiMatchQueryBuilder );
//source源字段过虑
searchSourceBuilder.fetchSource( new String[]{"name", "studymodel", "description"}, new String[]{} );
searchRequest.source( searchSourceBuilder );
SearchResponse search = client.search( searchRequest );
SearchHits hits = search.getHits();
long totalHits = hits.getTotalHits();
System.out.println( "总条数：" + totalHits );
for (SearchHit searchHit : hits.getHits()) {
String sourceAsString = searchHit.getSourceAsString();
System.out.println( sourceAsString );
}
}2.13 布尔查询
/**
* 搜索管理 布尔查询
*/
@Test
public void testSearchBoolean() throws IOException {
//创建搜索请求对象
SearchRequest searchRequest = new SearchRequest( "blog1" );
//设置type
searchRequest.types( "doc" );
创建搜索源配置对象
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
//source源字段过虑
searchSourceBuilder.fetchSource( new String[]{"name", "studymodel", "description"}, new String[]{} );
//multiQuery
MultiMatchQueryBuilder multiMatchQueryBuilder = QueryBuilders.multiMatchQuery( "Boot 开发", "name", "description" )
.minimumShouldMatch( "50%" );
multiMatchQueryBuilder.field( "name", 10 );//提升boost 表示权重提升10倍
//TermQuery
TermQueryBuilder termQueryBuilder = QueryBuilders.termQuery( "studymodel", "201001" );
// 布尔查询
BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
boolQueryBuilder.must( multiMatchQueryBuilder );
boolQueryBuilder.must( termQueryBuilder );
//设置布尔查询对象
searchSourceBuilder.query( boolQueryBuilder );
//设置搜索源配置
searchRequest.source( searchSourceBuilder );
//搜索
SearchResponse search = client.search( searchRequest );
SearchHits hits = search.getHits();
long totalHits = hits.getTotalHits();
System.out.println( "总条数：" + totalHits );
for (SearchHit searchHit : hits.getHits()) {
String sourceAsString = searchHit.getSourceAsString();
System.out.println( sourceAsString );
}
}2.14 过滤器
/**
* 搜索管理 过滤器
*/
@Test
public void testSearchFilter() throws IOException {
//创建搜索请求对象
SearchRequest searchRequest = new SearchRequest( "blog1" );
//设置type
searchRequest.types( "doc" );
创建搜索源配置对象
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
//source源字段过虑
searchSourceBuilder.fetchSource( new String[]{"name", "studymodel", "description"}, new String[]{} );
//multiQuery 多field查询
MultiMatchQueryBuilder multiMatchQueryBuilder = QueryBuilders.multiMatchQuery( "Boot 开发", "name", "description" )
.minimumShouldMatch( "50%" );
multiMatchQueryBuilder.field( "name", 10 );//提升boost 表示权重提升10倍
//多Field查询，添加到搜索源配置对象中
searchSourceBuilder.query( multiMatchQueryBuilder );
//TermQuery
TermQueryBuilder termQueryBuilder = QueryBuilders.termQuery( "studymodel", "201001" );
//Term查询，添加到搜索源配置对象中
searchSourceBuilder.query( termQueryBuilder );
// 布尔查询
BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
boolQueryBuilder.must( searchSourceBuilder.query() );
//过虑
boolQueryBuilder.filter( QueryBuilders.termQuery( "studymodel", "201001" ) );
boolQueryBuilder.filter( QueryBuilders.rangeQuery( "price" ).gte( 5 ).lte( 100 ) );
//设置布尔查询对象
searchSourceBuilder.query( boolQueryBuilder );
//设置搜索源配置
searchRequest.source( searchSourceBuilder );
//搜索
SearchResponse search = client.search( searchRequest );
SearchHits hits = search.getHits();
long totalHits = hits.getTotalHits();
System.out.println( "总条数：" + totalHits );
for (SearchHit searchHit : hits.getHits()) {
String sourceAsString = searchHit.getSourceAsString();
System.out.println( sourceAsString );
}
}2.15 排序
/**
* 排序
*
* @throws IOException
*/
@Test
public void testSort() throws IOException {
SearchRequest searchRequest = new SearchRequest( "blog1" );
searchRequest.types( "doc" );
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
//source源字段过虑
searchSourceBuilder.fetchSource( new String[]{"name", "studymodel", "price", "description"}, new String[]{} );
searchRequest.source( searchSourceBuilder );
//布尔查询
BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
//过虑
boolQueryBuilder.filter( QueryBuilders.rangeQuery( "price" ).gte( 0 ).lte( 100 ) );
// 排序
searchSourceBuilder.sort( new FieldSortBuilder( "studymodel" ).order( SortOrder.DESC ) );
searchSourceBuilder.sort( new FieldSortBuilder( "price" ).order( SortOrder.ASC ) );
//搜索
SearchResponse searchResponse = client.search( searchRequest );
SearchHits hits = searchResponse.getHits();
SearchHit[] searchHits = hits.getHits();
for (SearchHit hit : searchHits) {
String sourceAsString = hit.getSourceAsString();
System.out.println( sourceAsString );
}
}2.16 高亮显示
/**
* 高亮显示
*
* @throws IOException
*/
@Test
public void testHighlight() throws IOException {
SearchRequest searchRequest = new SearchRequest( "blog1" );
searchRequest.types( "doc" );
SearchSourceBuilder searchSourceBuilder = new SearchSourceBuilder();
//source源字段过虑
searchSourceBuilder.fetchSource( new String[]{"name", "studymodel", "price", "description"}, new String[]{} );
searchRequest.source( searchSourceBuilder );
//匹配关键字
MultiMatchQueryBuilder multiMatchQueryBuilder = QueryBuilders.multiMatchQuery( "实战", "name", "description" );
searchSourceBuilder.query( multiMatchQueryBuilder );
//布尔查询
BoolQueryBuilder boolQueryBuilder = QueryBuilders.boolQuery();
boolQueryBuilder.must( searchSourceBuilder.query() );
//过虑
boolQueryBuilder.filter( QueryBuilders.rangeQuery( "price" ).gte( 0 ).lte( 100 ) );
//排序
searchSourceBuilder.sort( new FieldSortBuilder( "studymodel" ).order( SortOrder.DESC ) );
searchSourceBuilder.sort( new FieldSortBuilder( "price" ).order( SortOrder.ASC ) );
//高亮设置
HighlightBuilder highlightBuilder = new HighlightBuilder();
highlightBuilder.preTags( "<tag>" );//设置前缀
highlightBuilder.postTags( "</tag>" );//设置后缀
// 设置高亮字段
highlightBuilder.fields().add( new HighlightBuilder.Field( "name" ) );
//highlightBuilder.fields().add(new HighlightBuilder.Field("description"));
searchSourceBuilder.highlighter( highlightBuilder );
SearchResponse searchResponse = client.search( searchRequest );
SearchHits hits = searchResponse.getHits();
SearchHit[] searchHits = hits.getHits();
for (SearchHit hit : searchHits) {
Map<String, Object> sourceAsMap = hit.getSourceAsMap();
//名称
String name = (String) sourceAsMap.get( "name" );
//取出高亮字段内容
Map<String, HighlightField> highlightFields = hit.getHighlightFields();
if (highlightFields != null) {
HighlightField nameField = highlightFields.get( "name" );
if (nameField != null) {
Text[] fragments = nameField.getFragments();
StringBuffer stringBuffer = new StringBuffer();
for (Text str : fragments) {
stringBuffer.append( str.string() );
}
name = stringBuffer.toString();
}
}
System.out.println( "高亮==" + name );
String sourceAsString = hit.getSourceAsString();
System.out.println( sourceAsString );
}
}
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