elasticsearch - 在java elasticsearch上设置字段数据= true

Question

通过Eclipse运行Java flex 搜索查询。测试时出现此错误，并且无法在API的任何地方找到告诉我如何将该字段数据设置为true的错误

IllegalArgumentException[Fielddata is disabled on text fields by default. Set fielddata=true on [created] in order to load fielddata in memory by uninverting the inverted index. Note that this can however use significant memory. Alternatively use a keyword field instead.]

有谁知道我该如何解决？

Answer 1

您必须修改索引映射属性:

try (XContentBuilder jsonBuilder = XContentFactory.jsonBuilder()) {
    final XContentBuilder builder = jsonBuilder
            .startObject()
              .startObject("your_type")
                .startObject("properties")
                  .startObject("your_field")
                    .field("type", "text")
                    .field("fielddata", true)/*setting fielddata*/
                  .endObject()
                .endObject()
              .endObject()
            .endObject();

    client.admin().indices().preparePutMapping("your_index")
            .setType("your_type")
            .setSource(builder)/*also there are overloads for setSource()*/
            .get();
}

或

String source = "{\"your_type\":{\"properties\":{\"your_field\":{\"type\":\"text\",\"fielddata\":true}}}}";
client.admin().indices().preparePutMapping("your_index)
        .setType("your_type")
        .setSource(source, XContentType.JSON)
        .get();

结果:

{
  "your_index": {
    "aliases": {},
    "mappings": {
      "your_type": {
        "properties": {
          ...
          ...
          "your_field": {
            "type": "text",
            "fielddata": true,
            "fields": {
              "keyword": {
                "type": "keyword",
                "ignore_above": 256
              }
            }
          }
          ...
          ...
        }
      }
    }
  }
}