弹性搜索中使用_id作为文档标识符

Question

I have a document with _id as a parameter. I have the below JSON

{  
   "_id":{  
      "$oid":"52af48b5d55148fa0c199643"
   },
   "email":"example.ex@example.com"
}

Corresponding Java class:

@Document(indexName = "Test")
public class Test {

  @Id
  @ObjectId
  private String _id;

  private String email;
}

The conversion of json object is successful but there is a problem in saving the data to elastic search.

org.elasticsearch.index.mapper.MapperParsingException: Field [_id] is a metadata field and cannot be added inside a document. Use the index API request parameters

I have seen some references and came to a conclusion that i cannot use _id.. But am looking for a way to use a JsonProperty but it also does not work as i guess ObjectId uses JsonProperty internally.

Kindly provide suggestions

Answer 1

Like the error message say, you can't use field with name _id inside the document.

To fix that use "replace all"(or function like that that replace substring in other substring) function, and replace all "_id" occurrence with "id"

Answer 2

Just use as following

{  
     "_id":"52af48b5d55148fa0c199643",
      "email":"example.ex@example.com"
}

And remove @ObjectId