refactor(login): 使用gf/grand替代math/rand生成会话ID随机数

modules/blazing/service/login.go

@@ -6,9 +6,9 @@ import (
 
 	"encoding/binary"
 	"encoding/hex"
-	"math/rand"
 	"strings"
 
+	"github.com/gogf/gf/v2/util/grand"
 	"github.com/google/uuid"
 )
 
@@ -44,12 +44,6 @@ func (s *LoginService) GetSessionId(accountID uint) (string, string, error) {
 		return "", "", err
 	}
 
-	// 生成4字节安全随机数（使用crypto/rand提高随机性，适合会话ID场景）
-	randomBytes := make([]byte, 4)
-	if _, err := rand.Read(randomBytes); err != nil {
-		return "", "", err
-	}
-
 	// 将accountID转换为4字节大端序字节数组
 	accountBytes := make([]byte, 4)
 	binary.BigEndian.PutUint32(accountBytes, uint32(accountID))
@@ -58,7 +52,7 @@ func (s *LoginService) GetSessionId(accountID uint) (string, string, error) {
 	sessionBytes := make([]byte, 0, 24)
 	sessionBytes = append(sessionBytes, accountBytes...)
 	sessionBytes = append(sessionBytes, uuidBytes...)
-	sessionBytes = append(sessionBytes, randomBytes...)
+	sessionBytes = append(sessionBytes, grand.B(4)...)
 
 	// 编码为十六进制字符串作为最终会话ID
 	sessionID := hex.EncodeToString(sessionBytes)