From 748a3663e2fe09733552a0757419bcd530e6e328 Mon Sep 17 00:00:00 2001
From: Ally Dale <vipally@gmail.com>
Date: Wed, 21 Aug 2019 14:49:27 +0800
Subject: [PATCH] =?UTF-8?q?=E5=A2=9E=E5=8A=A0=E6=8E=A5=E5=8F=A3=E5=88=A4?=
 =?UTF-8?q?=E6=96=ADkey=E6=98=AF=E5=90=A6=E5=AD=98=E5=9C=A8?=
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---
 sysmodule/RedisModule.go | 24 +++++++++++++++++++++++-
 1 file changed, 23 insertions(+), 1 deletion(-)

diff --git a/sysmodule/RedisModule.go b/sysmodule/RedisModule.go
index 05989bf..ff008f8 100644
--- a/sysmodule/RedisModule.go
+++ b/sysmodule/RedisModule.go
@@ -504,6 +504,28 @@ func (slf *RedisModule) GetMuchStringJSON(keys map[string]interface{}) error {
 	return nil
 }
 
+//判断一个Key是否存在
+func (slf *RedisModule) ExistsKey(key string) (bool, error) {
+	conn, err := slf.getConn()
+	if err != nil {
+		return false, err
+	}
+	defer conn.Close()
+
+	ret, err := conn.Do("EXISTS", key)
+	if err != nil {
+		service.GetLogger().Printf(service.LEVER_ERROR, "ExistsKey fail, reason:%v", err)
+		return false, err
+	}
+	retValue, ok := ret.(int64)
+	if !ok {
+		err = errors.New("Func[ExistsKey] Redis Data Error")
+		return false, err
+	}
+
+	return retValue != 0, nil
+}
+
 //DelRedisString redis删除string类型数据
 //示例:DelRedisString("AAAABTEST1")
 func (slf *RedisModule) DelString(key string) error {
@@ -526,7 +548,7 @@ func (slf *RedisModule) DelString(key string) error {
 	}
 
 	if retValue == 0 {
-		err = errors.New("Func[DelRedisString] Delete Key Fail")
+		err = fmt.Errorf("Func[DelRedisString] Delete Key(%s) not exists", key)
 		return err
 	}