JAVA操作Elasticsearch指定主键

• 前言
• 1. JAVA操作Elasticsearch手动指定ID
• 2. JAVA操作Elasticsearch自动生成ID
• 3. DSL方式手动指定ID
• 4. DSL方式自动生成ID

Elasticsearch一共有两种主键生成策略，一个是手动指定和一个是自动生成!

  IndexRequest indexRequest = new IndexRequest(indexName);
  // 手动指定id
  indexRequest.id(obj.getId());

效果如图

无须指定ID,es会自动生成id规则

示例

PUT /index/type/id
{
    "xxx":"xxx"
}

真实请求

PUT /cs_index/product/2
{
 "name":"xingdailu",
 "desc":"nvmingxing",
 "price":100
}

执行结果

{
  "_index": "cs_index",
  "_type": "product",
  "_id": "2",
  "_version": 1,
  "result": "created",
  "_shards": {
    "total": 2,
    "successful": 1,
    "failed": 0
  	}
  }

示例(请求中不带/id)

POST /index/type
{
    "xxx":"xxx"
}

真实请求

POST /test_index/order/
{
  "user":"3"
}

执行结果

{
  "_index": "test_index",
  "_type": "order",
  "_id": "op33M2jBk5d8CGC4Toxn",
  "_version": 1,
  "result": "created",
  "_shards": {
    "total": 2,
    "successful": 1,
    "failed": 0
	}
}