Java的新项目学成在线笔记-day15（五）

2.3 Logstash扫描课程计划媒资
Logstash定时扫描课程媒资信息表，并将课程媒资信息写入索引库。
' 2.3.1 创建索引
1、创建xc_course_media索引
2、并向此索引创建如下映射
Post http://localhost:9200/xc_course_media/doc/_mapping

[mw_shl_code=applescript,true]{    "properties" : {            "courseid" : {                "type" : "keyword"             },             "teachplan_id" : {                "type" : "keyword"             },             "media_id" : {                "type" : "keyword"             },             "media_url" : {               "index" : false,[/mw_shl_code][mw_shl_code=applescript,true]          "type" : "text"             },             "media_fileoriginalname" : {                "index" : false,                "type" : "text"             }     }  }[/mw_shl_code]2.3.2  创建Logstash模板文件 在logstach的config目录创建xc_course_media_template.json，内容如下：本教程的xc_course_media_template.json目录是：D:/ElasticSearch/logstash7.2.1/config/xc_course_media_template.json[mw_shl_code=applescript,true]{    "mappings" : {       "doc" : {          "properties" : {            "courseid" : {                "type" : "keyword"             },             "teachplan_id" : {                "type" : "keyword"             },             "media_id" : {                "type" : "keyword"             },             "media_url" : {                "index" : false,                "type" : "text"             },             "media_fileoriginalname" : {                "index" : false,                "type" : "text"             }       }   },    "template" : "xc_course_media" }[/mw_shl_code]2.3.3 配置mysql.conf 在logstash的config目录下配置mysql_course_media.conf文件供logstash使用，logstash会根据 mysql_course_media.conf文件的配置的地址从MySQL中读取数据向ES中写入索引。 参考https://www.elastic.co/guide/en/ ... ns-inputs-jdbc.html配置输入数据源和输出数据源。[mw_shl_code=applescript,true] 2.3.4 启动logstash.bat 启动logstash.bat采集teachplan_media_pub中的数据，向ES写入索引。input {   stdin {   }   jdbc {  jdbc_connection_string => "jdbc:mysql://localhost:3306/xc_course? useUnicode=true&characterEncoding=utf‐8&useSSL=true&serverTimezone=UTC"   # the user we wish to excute our statement as   jdbc_user => "root"   jdbc_password => mysql  # the path to our downloaded jdbc driver    jdbc_driver_library => "F:/develop/maven/repository3/mysql/mysql‐connector‐java/5.1.41/mysqlconnector‐java‐5.1.41.jar"   # the name of the driver class for mysql   jdbc_driver_class => "com.mysql.jdbc.Driver"   jdbc_paging_enabled => "true"   jdbc_page_size => "50000"  #要执行的sql文件  #statement_filepath => "/conf/course.sql"  statement => "select * from teachplan_media_pub where timestamp >  date_add(:sql_last_value,INTERVAL 8 HOUR)"   #定时配置   schedule => "* * * * *"   record_last_run => true   last_run_metadata_path => "D:/ElasticSearch/logstash‐6.2.1/config/xc_course_media_metadata"   } }     output {  elasticsearch {   #ES的ip地址和端口  hosts => "localhost:9200"  #hosts => ["localhost:9200","localhost:9202","localhost:9203"]   #ES索引库名称   index => "xc_course_media"   document_id => "%{id}"  document_type => "doc"   template =>"D:/ElasticSearch/logstash‐6.2.1/config/xc_course_media_template.json"   template_name =>"xc_course_media"   template_overwrite =>"true"   }   stdout {  #日志输出   codec => json_lines   } }[/mw_shl_code]