elasticsearch入门及安装

参考教程

elasticsearch入门教程：https://www.yiibai.com/elasticsearch/elasticsearch-getting-start.html

Java JDK安装和配置：https://www.yiibai.com/java/java_environment_setup.html

网上的elasticsearch和jdk安装包下载速度太慢了，这是我下载下来保存的

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elasticsearch windows安装包：链接: https://pan.baidu.com/s/1fE6rE-lGuwJuA29_0C_VXw 提取码: 5v2v

Java JDK windows64位安装包：链接: https://pan.baidu.com/s/1NVuARW_cK6WeNy-VhTEiVQ 提取码: 8jxs

curl  windows安装包：链接: https://pan.baidu.com/s/1RLOQOWEo2vt_8YkK7fI-ZQ 提取码: wpny

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Elasticsearch需要先安装JDK并配置环境变量，之后下载安装Elasticsearch

启动 ElasticSearch

E:\elasticsearch-7.5.-windows-x86_64\elasticsearch-7.5.\bin>elasticsearch.bat

启动成功

启动成功后浏览器地址栏输入：http://localhost:9200/

创建索引

curl -H "Content-Type: application/json" -XPUT "http://localhost:9200/movies/movie/1" -d "{\"title\": \"The Godfather\",\"director\":\"Francis Ford Coppola\",\"year\": 1972}"
{"_index":"movies","_type":"movie","_id":"","_version":,"result":"updated","_shards":{"total":,"successful":,"failed":},"_seq_no":,"_primary_term":}

注意，{}内的双引号记得加反斜杠\转义

由ID获取文档/索引

curl  -H "Content-Type: application/json" -XGET "http://localhost:9200/movies/movie/1" -d''
{"_index":"movies","_type":"movie","_id":"","_version":,"_seq_no":,"_primary_term":,"found":true,"_source":{"title": "The Godfather","director":"Francis Ford Coppola","year": }}

删除文档

curl  -H "Content-Type: application/json" -XGET "http://localhost:9200/movies/movie/1" -d''
{"_index":"movies","_type":"movie","_id":"","found":false}

搜索所有索引和类型 _search

curl -H "Content-Type: application/json"  -XGET "http://localhost:9200/_search"
{"took":,"timed_out":false,"_shards":{"total":,"successful":,"skipped":,"failed":},"hits":{"total":{"value":,"relation":"eq"},"max_score":1.0,"hits":[{"_index":"movies","_type":"movie","_id":"","_score":1.0,"_source":{"title": "gangtie","director": "pfeiliu","year": ,"genres": ["nishishui", "asdwqe"]}},{"_index":"movies","_type":"movie","_id":"","_score":1.0,"_source":{"title": "The Godfather","director": "Francis Ford Coppola","year": ,"genres": ["Crime", "Drama"]}},{"_index":"movies","_type":"movie","_id":"","_score":1.0,"_source":{"title": "lawer","director": "lean","year": ,"genres": ["youar", "pl"]}}]}}

搜索某索引的数据类型

curl -H "Content-Type: application/json"  -XGET "http://localhost:9200/movies/_search"
{"took":,"timed_out":false,"_shards":{"total":,"successful":,"skipped":,"failed":},"hits":{"total":{"value":,"relation":"eq"},"max_score":1.0,"hits":[{"_index":"movies","_type":"movie","_id":"","_score":1.0,"_source":{"title": "gangtie","director": "pfeiliu","year": ,"genres": ["nishishui", "asdwqe"]}},{"_index":"movies","_type":"movie","_id":"","_score":1.0,"_source":{"title": "The Godfather","director": "Francis Ford Coppola","year": ,"genres": ["Crime", "Drama"]}},{"_index":"movies","_type":"movie","_id":"","_score":1.0,"_source":{"title": "lawer","director": "lean","year": ,"genres": ["youar", "pl"]}}]}}

在指定索引中显式搜索指定类型的文档

curl -H "Content-Type: application/json"  -XGET "http://localhost:9200/movies/movie/_search"
{"took":,"timed_out":false,"_shards":{"total":,"successful":,"skipped":,"failed":},"hits":{"total":{"value":,"relation":"eq"},"max_score":1.0,"hits":[{"_index":"movies","_type":"movie","_id":"","_score":1.0,"_source":{"title": "gangtie","director": "pfeiliu","year": ,"genres": ["nishishui", "asdwqe"]}},{"_index":"movies","_type":"movie","_id":"","_score":1.0,"_source":{"title": "The Godfather","director": "Francis Ford Coppola","year": ,"genres": ["Crime", "Drama"]}},{"_index":"movies","_type":"movie","_id":"","_score":1.0,"_source":{"title": "lawer","director": "lean","year": ,"genres": ["youar", "pl"]}}]}}

常见错误处理：

错误：{"error":"Content-Type header [application/x-www-form-urlencoded] is not supported","status":406}

解决：添加：-H "Content-Type: application/json"

错误：{"error":{"root_cause":[{"type":"mapper_parsing_exception","reason":"failed to parse"}],"type":"mapper_parsing_exception","reason":"failed to parse","caused_by":{"type":"json_e_o_f_exception","reason":"Unexpected end-of-input in field name\n at [Source: org.elasticsearch.common.bytes.BytesReference$MarkSupportingStreamInputWrapper@3c1b21d; line: 1, column: 133]"}},"status":400}curl: (3) unmatched close brace/bracket in URL position 5:
1972}

解决：在｛｝内的双引号都加上一个"\"转义

查看集群健康状况：

浏览器输入：http://localhost:9200/_cat

或者http://localhost:9200/_cat/health?v

查看所有索引：

http://localhost:9200/_cat/indices?v