elasticsearch bulk数据--ES批量导入json数据

一、Bulk API
官网给出的介绍：https://www.elastic.co/guide/en/elasticsearch/reference/6.0/docs-bulk.html

The REST API endpoint is /_bulk, and it expects the following newline delimited JSON (NDJSON) structure:

action_and_meta_data

optional_source

action_and_meta_data

optional_source

....
action_and_meta_data

optional_source

也就是说每一个操作都有2行数据组成，末尾要回车换行。第一行用来说明操作命令和原数据、第二行是自定义的选项.举个例子，同时执行插入2条数据、删除一条数据。

{ "create" : { "_index" : "blog", "_type" : "article", "_id" : "3" }}
{ "title":"title1","posttime":"2016-07-02","content":"内容一" }

{ "create" : { "_index" : "blog", "_type" : "article", "_id" : "4" }}
{ "title":"title2","posttime":"2016-07-03","content":"内容2" }

{ "delete":{"_index" : "blog", "_type" : "article", "_id" : "1" }}

官网的解释和例子：
Because this format uses literal 's as delimiters, please be sure that the JSON actions and sources are not pretty printed. Here is an example of a correct sequence of bulk commands:

POST _bulk
{ "index" : { "_index" : "test", "_type" : "type1", "_id" : "1" } }
{ "field1" : "value1" }
{ "delete" : { "_index" : "test", "_type" : "type1", "_id" : "2" } }
{ "create" : { "_index" : "test", "_type" : "type1", "_id" : "3" } }
{ "field1" : "value3" }
{ "update" : {"_id" : "1", "_type" : "type1", "_index" : "test"} }
{ "doc" : {"field2" : "value2"} }

二、把数据保存在文件中的提交方法。 官网的介绍和说明：
If you’re providing text file input to curl, you must use the --data-binary flag instead of plain -d. The latter doesn’t preserve newlines. Example:

$ cat requests
{ "index" : { "_index" : "test", "_type" : "type1", "_id" : "1" } }
{ "field1" : "value1" }
$ curl -s -H "Content-Type: application/x-ndjson" -XPOST localhost:9200/_bulk --data-binary "@requests"

具体例子： 把下面的数据保存在文件request中，然后使用命令提交：

vim retuqest
curl  -XPOST  '192.168.0.153:9200/_bulk'   --data-binary  @request

{ "index" : { "_index" : "test_index", "_type" : "chen", "_id" : "1" } }
{ "field1" : "value1" }
{ "index" : { "_index" : "test_index", "_type" : "chen", "_id" : "2" } }
{ "field1" : "value2" }
{ "index" : { "_index" : "test_index", "_type" : "chen", "_id" : "3" } }
{ "field1" : "value3" }

看看有没有提交成功：

curl -XGET 'http://192.168.0.153:9200/test_index/chen/1?pretty'
{
  "_index" : "test_index",
  "_type" : "chen",
  "_id" : "1",
  "_version" : 2,
  "found" : true,
  "_source" : {
    "field1" : "value1"
  }
}

ok，提交成功。