将二进制文件插入es并提取使用

参考:https://www.elastic.co/guide/en/elasticsearch/reference/current/binary.html

插入脚本如下: 其中nc为要插入的二进制文件

#!/bin/bash
a=`xxd -p nc`
es_url="192.168.2.10:9201"
a=`echo ${a}|sed 's/\n//g'`
curl -X PUT "${es_url}/my_index?pretty" -H 'Content-Type: application/json' -d'
{
  "mappings": {
    "properties": {
      "name": {
        "type": "text"
      },
      "blob": {
        "type": "binary"
      }
    }
  }
}
'
curl -X PUT "${es_url}/my_index/_doc/1?pretty" -H 'Content-Type: application/json' -d"
{
  \"name\": \"Some binary blob\",
  \"blob\": \"${a}\" 
}
"

查询脚本如下: 其中a_search为读出的二进制文件

#!/bin/bash
a=`curl "192.168.2.10:9201/my_index/_doc/_search?"|jq ".hits.hits[0]._source.blob"`
echo ${a}|xxd -r -p >a_search

-------------------------------

Binary datatypeedit

The binary type accepts a binary value as a Base64 encoded string. The field is not stored by default and is not searchable:

PUT my_index
{
  "mappings": {
    "properties": {
      "name": {
        "type": "text"
      },
      "blob": {
        "type": "binary"
      }
    }
  }
}

PUT my_index/_doc/1
{
  "name": "Some binary blob",
  "blob": "U29tZSBiaW5hcnkgYmxvYg==" 
}

Copy as cURLView in Console 

The Base64 encoded binary value must not have embedded newlines \n.