ES source&doc value查询数据解析 source查询 source 过滤 source不需要过滤，返回所

查询数据解析

source查询

source 过滤

# source 过滤
String[] includeFields = new String[] {"test1", "test2"};
String[] excludeFields = new String[] {"test1", "test2"};
sourceBuilder.fetchSource(includeFields, excludeFields);

source不需要过滤，返回所有字段无需配置
source关闭
```
sourceBuilder.fetchSource(false)
```

source获取数据

String sourceStr = oneHit.getSourceAsString();
JSONObject json = new JSONObject(sourceStr);

Map<String Object> map = oneHit.getSourceAsMap();

doc value查询

增加需要返回的字段：包括字段名 + 格式化
- use_field_mapping：use format from the mapping
- epoch_millis:
- date类型支持多种格式：www.elastic.co/guide/en/el…
```
sourceBuilder.docValueField(field, "use_field_mapping");
```

DDL

GET /_search
{
    "query" : {
        "match_all": {}
    },
    "docvalue_fields" : [
        {
            "field": "my_ip_field", 
            "format": "use_field_mapping" 
        },
        {
            "field": "my_date_field",
            "format": "epoch_millis" 
        }
    ]
}

doc value获取数据

Map<String, DocumentField> map = oneHit.getFields();
DocumentField module = map.get("module");
spanInfo.setModule(module == null ? "" : module.getValue());

参考官方文档 www.elastic.co/guide/en/el… www.elastic.co/guide/en/el…