当我第一次创建logstash jdbc conf文件将mysql数据导入elasticsearch时，它运行得很好。但是，突然，同样的文件工作正常，不再工作，并给出一个错误“错误注册插件”。
这是我的 sms-logstash.conf 文件

input {
  jdbc { 
    jdbc_connection_string => "jdbc:mysql://localhost:3306/sms"
    # The user we wish to execute our statement as
    jdbc_user => "root"
    jdbc_password => ""
    # The path to our downloaded jdbc driver
    jdbc_driver_library => "C:/Users/robesh/Downloads/logstash-6.2.3/logstash-6.2.3/bin/mysql-connector-java-5.1.45-bin.jar"
    jdbc_driver_class => "com.mysql.jdbc.Driver"
    # our query
    statement => "SELECT * FROM salon_reg" 

    }
  }

output {
  stdout { codec => rubydebug }

  elasticsearch {
  "hosts" => "localhost:9200"
  "index" => "sms"
  "document_type" => "salon_reg"

  }

}

当我以 bin/logstash -f sms-logstash.conf 它给出了以下错误

C:\Users\robesh\Downloads\logstash-6.2.3\logstash-6.2.3\bin>logstash -f sms-logstash.conf
Sending Logstash's logs to C:/Users/robesh/Downloads/logstash-6.2.3/logstash-6.2.3/logs which is now configured via log4j2.properties
[2018-04-15T15:05:46,900][INFO ][logstash.modules.scaffold] Initializing module {:module_name=>"fb_apache", :directory=>"C:/Users/robesh/Downloads/logstash-6.2.3/logstash-6.2.3/modules/fb_apache/configuration"}
[2018-04-15T15:05:47,028][INFO ][logstash.modules.scaffold] Initializing module {:module_name=>"netflow", :directory=>"C:/Users/robesh/Downloads/logstash-6.2.3/logstash-6.2.3/modules/netflow/configuration"}
[2018-04-15T15:05:47,665][WARN ][logstash.config.source.multilocal] Ignoring the 'pipelines.yml' file because modules or command line options are specified
[2018-04-15T15:05:49,635][INFO ][logstash.runner          ] Starting Logstash {"logstash.version"=>"6.2.3"}
[2018-04-15T15:05:51,303][INFO ][logstash.agent           ] Successfully started Logstash API endpoint {:port=>9600}
[2018-04-15T15:06:04,935][WARN ][logstash.outputs.elasticsearch] You are using a deprecated config setting "document_type" set in elasticsearch. Deprecated settings will continue to work, but are scheduled for removal from logstash in the future. Document types are being deprecated in Elasticsearch 6.0, and removed entirely in 7.0. You should avoid this feature If you have any questions about this, please visit the #logstash channel on freenode irc. {:name=>"document_type", :plugin=><LogStash::Outputs::ElasticSearch hosts=>[//localhost:9200], index=>"sms", document_type=>"salon_reg", id=>"7eecf64f77b050d7ebba1e645e2de1d988a4f3d4b88814c75044d6e6c4606a2b", enable_metric=>true, codec=><LogStash::Codecs::Plain id=>"plain_cbc6f6b2-287c-44bf-8771-3a951d7ceabf", enable_metric=>true, charset=>"UTF-8">, workers=>1, manage_template=>true, template_name=>"logstash", template_overwrite=>false, doc_as_upsert=>false, script_type=>"inline", script_lang=>"painless", script_var_name=>"event", scripted_upsert=>false, retry_initial_interval=>2, retry_max_interval=>64, retry_on_conflict=>1, action=>"index", ssl_certificate_verification=>true, sniffing=>false, sniffing_delay=>5, timeout=>60, pool_max=>1000, pool_max_per_route=>100, resurrect_delay=>5, validate_after_inactivity=>10000, http_compression=>false>}
[2018-04-15T15:06:05,141][INFO ][logstash.pipeline        ] Starting pipeline {:pipeline_id=>"main", "pipeline.workers"=>4, "pipeline.batch.size"=>125, "pipeline.batch.delay"=>50}
[2018-04-15T15:06:06,405][INFO ][logstash.outputs.elasticsearch] Elasticsearch pool URLs updated {:changes=>{:removed=>[], :added=>[http://localhost:9200/]}}
[2018-04-15T15:06:06,426][INFO ][logstash.outputs.elasticsearch] Running health check to see if an Elasticsearch connection is working {:healthcheck_url=>http://localhost:9200/, :path=>"/"}
[2018-04-15T15:06:07,079][WARN ][logstash.outputs.elasticsearch] Restored connection to ES instance {:url=>"http://localhost:9200/"}
[2018-04-15T15:06:07,280][INFO ][logstash.outputs.elasticsearch] ES Output version determined {:es_version=>6}
[2018-04-15T15:06:07,289][WARN ][logstash.outputs.elasticsearch] Detected a 6.x and above cluster: the `type` event field won't be used to determine the document _type {:es_version=>6}
[2018-04-15T15:06:07,336][INFO ][logstash.outputs.elasticsearch] Using mapping template from {:path=>nil}
[2018-04-15T15:06:07,424][INFO ][logstash.outputs.elasticsearch] Attempting to install template {:manage_template=>{"template"=>"logstash-*", "version"=>60001, "settings"=>{"index.refresh_interval"=>"5s"}, "mappings"=>{"_default_"=>{"dynamic_templates"=>[{"message_field"=>{"path_match"=>"message", "match_mapping_type"=>"string", "mapping"=>{"type"=>"text", "norms"=>false}}}, {"string_fields"=>{"match"=>"*", "match_mapping_type"=>"string", "mapping"=>{"type"=>"text", "norms"=>false, "fields"=>{"keyword"=>{"type"=>"keyword", "ignore_above"=>256}}}}}], "properties"=>{"@timestamp"=>{"type"=>"date"}, "@version"=>{"type"=>"keyword"}, "geoip"=>{"dynamic"=>true, "properties"=>{"ip"=>{"type"=>"ip"}, "location"=>{"type"=>"geo_point"}, "latitude"=>{"type"=>"half_float"}, "longitude"=>{"type"=>"half_float"}}}}}}}}
[2018-04-15T15:06:07,533][INFO ][logstash.outputs.elasticsearch] New Elasticsearch output {:class=>"LogStash::Outputs::ElasticSearch", :hosts=>["//localhost:9200"]}
[2018-04-15T15:06:08,863][ERROR][logstash.pipeline        ] Error registering plugin {:pipeline_id=>"main", :plugin=>"<LogStash::Inputs::Jdbc jdbc_connection_string=>\"jdbc:mysql://localhost:3306/sms\", jdbc_user=>\"root\", jdbc_driver_library=>\"C:/Users/robesh/Downloads/logstash-6.2.3/logstash-6.2.3/bin/mysql-connector-java-5.1.46-bin.jar\", jdbc_driver_class=>\"com.mysql.jdbc.Driver\", statement=>\"SELECT * FROM salon_reg\", id=>\"0c99246377cb88117db974a51d7bdcb982e8fe882ab825575c8ebdc3c890fb5a\", enable_metric=>true, codec=><LogStash::Codecs::Plain id=>\"plain_d687f831-1ac5-4480-b23d-e7fc976f5e9a\", enable_metric=>true, charset=>\"UTF-8\">, jdbc_paging_enabled=>false, jdbc_page_size=>100000, jdbc_validate_connection=>false, jdbc_validation_timeout=>3600, jdbc_pool_timeout=>5, sql_log_level=>\"info\", connection_retry_attempts=>1, connection_retry_attempts_wait_time=>0.5, last_run_metadata_path=>\"C:\\\\Users\\\\robesh/.logstash_jdbc_last_run\", use_column_value=>false, tracking_column_type=>\"numeric\", clean_run=>false, record_last_run=>true, lowercase_column_names=>true>", :error=>"(<unknown>): 'reader' unacceptable code point '\u0000' (0x0) special characters are not allowed\nin \"'reader'\", position 0 at line 0 column 0", :thread=>"#<Thread:0x1ad70417 run>"}
[2018-04-15T15:06:09,386][ERROR][logstash.pipeline        ] Pipeline aborted due to error {:pipeline_id=>"main", :exception=>#<Psych::SyntaxError: (<unknown>): 'reader' unacceptable code point ' ' (0x0) special characters are not allowed
in "'reader'", position 0 at line 0 column 0>, :backtrace=>["org/jruby/ext/psych/PsychParser.java:231:in `parse'", "uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/psych.rb:377:in `parse_stream'", "uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/psych.rb:325:in `parse'", "uri:classloader:/META-INF/jruby.home/lib/ruby/stdlib/psych.rb:252:in `load'", "C:/Users/robesh/Downloads/logstash-6.2.3/logstash-6.2.3/vendor/bundle/jruby/2.3.0/gems/logstash-input-jdbc-4.3.5/lib/logstash/plugin_mixins/value_tracking.rb:102:in `read'", "C:/Users/robesh/Downloads/logstash-6.2.3/logstash-6.2.3/vendor/bundle/jruby/2.3.0/gems/logstash-input-jdbc-4.3.5/lib/logstash/plugin_mixins/value_tracking.rb:78:in `get_initial'", "C:/Users/robesh/Downloads/logstash-6.2.3/logstash-6.2.3/vendor/bundle/jruby/2.3.0/gems/logstash-input-jdbc-4.3.5/lib/logstash/plugin_mixins/value_tracking.rb:36:in `initialize'", "C:/Users/robesh/Downloads/logstash-6.2.3/logstash-6.2.3/vendor/bundle/jruby/2.3.0/gems/logstash-input-jdbc-4.3.5/lib/logstash/plugin_mixins/value_tracking.rb:29:in `build_last_value_tracker'", "C:/Users/robesh/Downloads/logstash-6.2.3/logstash-6.2.3/vendor/bundle/jruby/2.3.0/gems/logstash-input-jdbc-4.3.5/lib/logstash/inputs/jdbc.rb:216:in `register'", "C:/Users/robesh/Downloads/logstash-6.2.3/logstash-6.2.3/logstash-core/lib/logstash/pipeline.rb:341:in `register_plugin'", "C:/Users/robesh/Downloads/logstash-6.2.3/logstash-6.2.3/logstash-core/lib/logstash/pipeline.rb:352:in `block in register_plugins'", "org/jruby/RubyArray.java:1734:in `each'", "C:/Users/robesh/Downloads/logstash-6.2.3/logstash-6.2.3/logstash-core/lib/logstash/pipeline.rb:352:in `register_plugins'", "C:/Users/robesh/Downloads/logstash-6.2.3/logstash-6.2.3/logstash-core/lib/logstash/pipeline.rb:502:in `start_inputs'", "C:/Users/robesh/Downloads/logstash-6.2.3/logstash-6.2.3/logstash-core/lib/logstash/pipeline.rb:393:in `start_workers'", "C:/Users/robesh/Downloads/logstash-6.2.3/logstash-6.2.3/logstash-core/lib/logstash/pipeline.rb:289:in `run'", "C:/Users/robesh/Downloads/logstash-6.2.3/logstash-6.2.3/logstash-core/lib/logstash/pipeline.rb:249:in `block in start'"], :thread=>"#<Thread:0x1ad70417 run>"}
[2018-04-15T15:06:09,506][ERROR][logstash.agent           ] Failed to execute action {:id=>:main, :action_type=>LogStash::ConvergeResult::FailedAction, :message=>"Could not execute action: LogStash::PipelineAction::Create/pipeline_id:main, action_result: false", :backtrace=>nil}

C:\Users\robesh\Downloads\logstash-6.2.3\logstash-6.2.3\bin>

有趣的是，这个文件以前工作正常，它很好地将我的数据索引到elasticsearch，但现在突然出现了一个错误。