增加mapping中所需字段

services/util/util.go

@@ -1,7 +1,8 @@
 package util
 
 var (
-	/*文档名：docName 类型：string
+	/*_id 文档id
+	 *文档名：docName 类型：string
 	 *文档标签（多个，用逗号隔开）：docTags 类型：string
 	 *文档一级分类（多个，用逗号隔开）：docClassLevelOne 类型：string
 	 *文档二级分类（多个，用逗号隔开）：docClassLevelTwo 类型：string
@@ -11,5 +12,5 @@ var (
 	 *文档摘要：docSummary 类型：string
 	 *上传时间：create_at 类型：date 格式：yyyy-MM-dd HH:mm:ss
 	 */
-	EsMapping = []string{"docName", "docTags", "docClassLevelOne", "docClassLevelTwo", "price", "downTimes", "viewTimes", "docSummary", "create_at"}
+	EsMapping = []string{"id", "docName", "docTags", "docClassLevelOne", "docClassLevelTwo", "price", "downTimes", "viewTimes", "docSummary", "create_at"}
 )