博主ES版本5.6.3
进入bin目录，打开cmd命令行，执行以下命令：
G:\ELK\elasticsearch-5.6.3\elasticsearch-5.6.3\bin>elasticsearch-plugin.bat install https://github.com/medcl/elasticsearch-analysi s-ik/releases/download/v5.6.3/elasticsearch-analysis-ik-5.6.3.zip
按照本地ES的版本，调整要下载的ik版本即可，要一一对应。
G:\ELK\elasticsearch-5.6.3\elasticsearch-5.6.3\bin>elasticsearch-plugin.bat install https://github.com/medcl/elasticsearch-analysi
s-ik/releases/download/v5.6.3/elasticsearch-analysis-ik-5.6.3.zip
