完善后台分页与令牌刷新

backend/internal/modules/adminauth/handler.go

@@ -65,10 +65,30 @@ func (h *Handler) Logout(c *gin.Context) {
 	response.OK(c, gin.H{"logged_out": true})
 }
 
+type AdminRefreshRequest struct {
+	RefreshToken string `json:"refresh_token" binding:"required"`
+}
+
+func (h *Handler) Refresh(c *gin.Context) {
+	var req AdminRefreshRequest
+	if err := c.ShouldBindJSON(&req); err != nil {
+		response.BadRequest(c, "refresh_token 不能为空")
+		return
+	}
+	tokens, err := h.service.Refresh(req.RefreshToken)
+	if err != nil {
+		writeAdminAuthError(c, err)
+		return
+	}
+	response.OK(c, tokens)
+}
+
 func writeAdminAuthError(c *gin.Context, err error) {
 	switch {
 	case errors.Is(err, ErrDependencyUnavailable):
 		response.ServiceUnavailable(c, "数据库未连接")
+	case errors.Is(err, ErrInvalidRefreshToken):
+		response.Unauthorized(c, "刷新令牌无效或已过期")
 	case errors.Is(err, ErrInvalidCredential):
 		response.BadRequest(c, "用户名或密码错误")
 	case errors.Is(err, ErrCaptchaInvalid):