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ElasticSearch入门API

ElasticSearch入门API

作者: 青衣敖王侯 | 来源:发表于2019-06-25 21:50 被阅读0次

    1.索引API:

    创建索引:

    curl -uelastic:changeme -XPUT http://172.2<wbr>1.30.11:1020<wbr>0/test_index

    查看现有索引:

    curl -uelastic:changeme -XGET http://172.21.30.11:10200/_cat/indices

    删除索引:

    curl -uelastic:changeme -XDELETE http://172.21.30.11:10200/test_index

    2.文档API

    2.1创建文档类API

    指定id创建文档api,创建文档时,如果索引不存在,es会自动创建对应的index和type

    curl -uelastic:changeme -XPUT http://172.2<wbr>1.30.11:1020<wbr>0/test_index<wbr>/doc/1 -d '{"username":"zzm","age":1}'

    创建一个随机分配id的文档,和上面的PUT不一样,我们用的POST方法:

    curl -uelastic:changeme -XPOST http://172.2<wbr>1.30.11:1020<wbr>0/test_index<wbr>/doc -d '{"username":"zzm","age":1}'

    2.2查询文档类API

    获取一个文档:

    curl -uelastic:changeme -XGET http://172.2<wbr>1.30.11:1020<wbr>0/test_index<wbr>/doc/1?prett<wbr>y

    查询所有文档,不带请求体:

    curl -uelastic:changeme -XGET http://172.21.30.11:10200/test_index/doc/_search?pretty

    带查询请求体的用法:

    curl -uelastic:changeme -XGET http://172.2<wbr>1.30.11:1020<wbr>0/test_index<wbr>/doc/_search<wbr>?pretty -d '
    {

    "query":{          "term":{
    
             "_id":"1"
    
             }
    
         }
    

    }'

    2.3批量操作文档类API,endpoint为_bulk,action_type有index,update,create,delete4类,index和create都是创建文档,两者的区别是,如果文档已经存在了index会覆盖掉,而create会 报错。

    curl -uelastic:changeme -XPOST http://172.2<wbr>1.30.11:1020<wbr>0/_bulk -d '
    {"create":{"_index":"test_index","_type":"doc","_id":"3"}}
    {"username":"zzmbulk","age":10}

    {"delete":{"_index":"test_index","_type":"doc","_id":"4"}}

    {"update":{"_id":"1","_index":"test_index","_type":"doc"}}

    {"doc":{"age":"20"}}

    '

    这里特别说明一下,每一行都要换行,最后一行留空行,还有,_type一定要加不然会报错,报错的让人怀疑人生。

    2.4批量查询文档API,这个比_search高端一些,它可以查出躲过_id

    curl -uelastic:changeme -XGET http://172.21.30.11:10200/_mget?pretty -d '

    {

    "docs":[
    
        {
    
            "_index":"test_index",
    
            "_type":"doc",
    
            "_id":"1"
    
        },
    
        {
    
            "_index":"test_index",
    
            "_type":"doc",
    
            "_id":"2"
    
        }
    
    ]
    

    }'

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