fix

routers/contract.go

@@ -46,5 +46,4 @@ func InitContract(rg *gin.RouterGroup) {
 	preRegisterGroup.POST("del", preRegister.Del)
 	preRegisterGroup.POST("detail", preRegister.Detail)
 	preRegisterGroup.POST("save", preRegister.Save)
-	preRegisterGroup.GET("export", preRegister.ExportPreRegister)
 }