imports re-arrange

elasticsearch/src/main/java/com/indexea/ideaseg/elasticsearch/IdeasegPlugin.java

@@ -13,6 +13,7 @@ import org.elasticsearch.plugins.AnalysisPlugin;
 import org.elasticsearch.plugins.Plugin;
 
 import java.io.File;
+import java.nio.file.FileSystems;
 import java.nio.file.Path;
 import java.util.HashMap;
 import java.util.Map;
@@ -34,8 +35,8 @@ public class IdeasegPlugin extends Plugin implements AnalysisPlugin, PluginBase
             home = Environment.PATH_HOME_SETTING.get(settings);
         if (home == null)
             throw new IllegalStateException(Environment.PATH_HOME_SETTING.getKey() + " is not configured");
-        Path pluginHome = java.nio.file.FileSystems.getDefault().getPath(home, "plugins", PLUGIN_NAME);
-        IdeasegIOAdapter.BASE_PATH = pluginHome.toString() + File.separator; //设置 HanLP 根目录
+        Path pluginHome = FileSystems.getDefault().getPath(home, "plugins", PLUGIN_NAME);
+        IdeasegIOAdapter.BASE_PATH = pluginHome + File.separator; //设置 HanLP 根目录
         Predefine.HANLP_PROPERTIES_PATH = IdeasegIOAdapter.BASE_PATH + CONFIG_FILE_NAME;
     }