Elasticsearch学习笔记——安装和数据导入

到elasticsearch网站下载最新版本的elasticsearch 6.2.1

https://www.elastic.co/downloads/elasticsearch

下载tar包，然后解压到/usr/local目录下，修改一下用户和组之后可以使用非root用户启动，启动命令

./bin/elasticsearch

然后访问http://127.0.0.1:9200/

接下来导入json格式的数据，数据内容如下

{"index":{"_id":"1"}}
{"title":"许宝江","url":"7254863","chineseName":"许宝江","sex":"男","occupation":" 滦县农业局局长","nationality":"中国"}
{"index":{"_id":"2"}}
{"title":"鲍志成","url":"2074015","chineseName":"鲍志成","occupation":"医师","nationality":"中国","birthDate":"1901年","deathDate":"1973年","graduatedFrom":"香港大学"}

需要注意的是{"index":{"_id":"1"}}和文件末尾另起一行换行是不可少的

否则会出现400状态，错误提示分别为

Malformed action/metadata line [1], expected START_OBJECT or END_OBJECT but found [VALUE_STRING]

The bulk request must be terminated by a newline [\n]"

使用下面命令来导入json文件

其中的people.json为文件的路径，可以是/home/common/下载/xxx.json

其中的es是index，people是type，在elasticsearch中的index和type可以理解成关系数据库中的database和table，两者都是必不可少的

curl -H "Content-Type: application/json" -XPOST ‘localhost:9200/es/people/_bulk?pretty&refresh‘ --data-binary "@people.json"

成功后的返回值是200，比如

{
  "took" : 233,
  "errors" : false,
  "items" : [
    {
      "index" : {
        "_index" : "es",
        "_type" : "people",
        "_id" : "1",
        "_version" : 1,
        "result" : "created",
        "forced_refresh" : true,
        "_shards" : {
          "total" : 2,
          "successful" : 1,
          "failed" : 0
        },
        "_seq_no" : 0,
        "_primary_term" : 1,
        "status" : 201
      }
    },
    {
      "index" : {
        "_index" : "es",
        "_type" : "people",
        "_id" : "2",
        "_version" : 1,
        "result" : "created",
        "forced_refresh" : true,
        "_shards" : {
          "total" : 2,
          "successful" : 1,
          "failed" : 0
        },
        "_seq_no" : 0,
        "_primary_term" : 1,
        "status" : 201
      }
    }
  ]
}

接下来可以使用对应的查询语句对数据进行查询

原文地址：https://www.cnblogs.com/tonglin0325/p/8446975.html