导入数据时的注意事项
在笔记 2 中，可能在执行导入时会报错，那是因为还需要将 mysql-connector-java-xxx.jar 放入 solr-xxx/server/lib 文件夹下；
自动增量更新
将 solr-dataimport-scheduler.jar 放入 solr-xxx/server/solr-webapp/webapp/WEB-INF/lib 文件夹下；
在 ``solr-xxx/server/solr-webapp/webapp/WEB-INF/web.xml` 中配置监听；
<listener> <listener-class> org.apache.solr.handler.dataimport.scheduler.ApplicationListener </listener-class> </listener>
从 solr-data-importscheduler.jar 中提取出 dataimport.properties 放入上一步创建的 conf 文件夹中，并根据自己的需要进行修改；比如我的配置如下；
# dataimport.properties example # # From this example, copy everything bellow "dataimport scheduler properties" to your # dataimport.properties file and then change params to fit your needs # # IMPORTANT: # Regardless of whether you have single or multiple-core Solr, # use dataimport.properties located in your solr.home/conf (NOT solr.home/core/conf) # For more info and context see here: # http://wiki.apache.org/solr/DataImportHandler#dataimport.properties_example #Tue Jul 21 12:10:50 CEST 2010 # metadataObject.last_index_time=2010-09-20 11\:12\:47 # last_index_time=2010-09-20 11\:12\:47 ################################################# # # # dataimport scheduler properties # # # ################################################# # to sync or not to sync # 1 - active; anything else - inactive syncEnabled=1 # which cores to schedule # in a multi-core environment you can decide which cores you want syncronized # leave empty or comment it out if using single-core deployment syncCores=weibo # solr server name or IP address # [defaults to localhost if empty] server=localhost # solr server port # [defaults to 80 if empty] port=8983 # application name/context # [defaults to current ServletContextListener's context (app) name] webapp=solr # URL params [mandatory] # remainder of URL params=/dataimport?command=delta-import&clean=false&commit=true # schedule interval # number of minutes between two runs # [defaults to 30 if empty] # 自动增量更新时间间隔，单位为 min，默认为 30 min interval=5 # 重做索引时间间隔，单位 min，默认 7200，即 5 天 reBuildIndexInterval = 7200 # 重做索引的参数 reBuildIndexParams=/dataimport?command=full-import&clean=true&commit=true # 重做索引时间间隔的开始时间 reBuildIndexBeginTime=1:30:00
总结
到此，我们就可以实现数据库自动增量导入了；
