Chore: correct the `DB` property of `RedisConfig` to int type

Converting Int to String is safer than converting String to Int.

middleware/session.go

@@ -8,6 +8,7 @@ import (
 	"github.com/gin-contrib/sessions/memstore"
 	"github.com/gin-contrib/sessions/redis"
 	"github.com/gin-gonic/gin"
+	"strconv"
 )
 
 // Store session存储
@@ -18,7 +19,7 @@ func Session(secret string) gin.HandlerFunc {
 	// Redis设置不为空，且非测试模式时使用Redis
 	if conf.RedisConfig.Server != "" && gin.Mode() != gin.TestMode {
 		var err error
-		Store, err = redis.NewStoreWithDB(10, conf.RedisConfig.Network, conf.RedisConfig.Server, conf.RedisConfig.Password, conf.RedisConfig.DB, []byte(secret))
+		Store, err = redis.NewStoreWithDB(10, conf.RedisConfig.Network, conf.RedisConfig.Server, conf.RedisConfig.Password, strconv.Itoa(conf.RedisConfig.DB), []byte(secret))
 		if err != nil {
 			util.Log().Panic("无法连接到 Redis：%s", err)
 		}

pkg/cache/redis.go

@@ -3,7 +3,6 @@ package cache
 import (
 	"bytes"
 	"encoding/gob"
-	"strconv"
 	"time"
 
 	"github.com/cloudreve/Cloudreve/v3/pkg/util"
@@ -44,7 +43,7 @@ func deserializer(value []byte) (interface{}, error) {
 }
 
 // NewRedisStore 创建新的redis存储
-func NewRedisStore(size int, network, address, password, database string) *RedisStore {
+func NewRedisStore(size int, network, address, password string, database int) *RedisStore {
 	return &RedisStore{
 		pool: &redis.Pool{
 			MaxIdle:     size,
@@ -54,15 +53,10 @@ func NewRedisStore(size int, network, address, password, database string) *Redis
 				return err
 			},
 			Dial: func() (redis.Conn, error) {
-				db, err := strconv.Atoi(database)
-				if err != nil {
-					return nil, err
-				}
-
 				c, err := redis.Dial(
 					network,
 					address,
-					redis.DialDatabase(db),
+					redis.DialDatabase(database),
 					redis.DialPassword(password),
 				)
 				if err != nil {

pkg/conf/conf.go

@@ -52,7 +52,7 @@ type redis struct {
 	Network  string
 	Server   string
 	Password string
-	DB       string
+	DB       int
 }
 
 // 跨域配置

pkg/conf/defaults.go

@@ -7,7 +7,7 @@ var RedisConfig = &redis{
 	Network:  util.EnvStr("REDIS_NETWORK", "tcp"),
 	Server:   util.EnvStr("REDIS_SERVER", ""),
 	Password: util.EnvStr("REDIS_PASSWORD", ""),
-	DB:       util.EnvStr("REDIS_DB", "0"),
+	DB:       util.EnvInt("REDIS_DB", 0),
 }
 
 // DatabaseConfig 数据库配置