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]