弹性搜索/ Logstash copy_to字段不适用于模板

Question

我有一个名为srch_address的copy_to字段，在其中累积所有地址行并将其定义为“文本” 使它可搜索。但是，即使在logstash管道完成后，我也无法在索引中看到此字段 我也无法对其进行搜索。有人可以帮忙吗？ 我在模板中有一个copy_to字段，如下所示：

{
    "template": "demographics-template",
    "version": 1,
    "mappings": {
        "_doc": {
            "properties": {
                "emp_id": {
                    "type": "keyword"
                },
                "address_line_1": {
                    "type": "keyword",
                    "copy_to": "srch_address"
                },
                "address_line_2": {
                    "type": "keyword",
                    "copy_to": "srch_address"
                },
                "address_line_3": {
                    "type": "keyword",
                    "copy_to": "srch_address"
                },
                "address_line_4": {
                    "type": "keyword",
                    "copy_to": "srch_address"
                },
                "address_line_5": {
                    "type": "keyword",
                    "copy_to": "srch_address"
                },
                "lst_updt_ts": {
                    "type": "date"
                },
                "srch_address": {
                    "type": "text"
                }
            }
        }
    }
}

我的logstash配置如下：

input {
    jdbc {
        #input configurations
        jdbc_driver_library => "....jar"
        jdbc_driver_class => "..."
        jdbc_connection_string => "jdbc:db2://...."
        jdbc_user => "***"
        jdbc_password => "***"
        statement => 
            "SELECT *
               FROM TBL1
              WHERE LST_UPDT_TS > :sql_last_value
               WITH UR"
        use_column_value => true
        tracking_column => "lst_updt_ts"
        tracking_column_type => "timestamp"
        last_run_metadata_path => "...."
    }
}

output {
    elasticsearch {
        #output configurations
        hosts => "http://localhost:9200/"
        index => "demographics"
        document_id => "%{emp_id}"
        template_name => "demographics-template"
        template_overwrite => false
    }
    stdout {
        codec => rubydebug
    }
}