diff --git a/pkg/httpclient/resty.go b/pkg/httpclient/resty.go
index 775cb1f..c9730e1 100644
--- a/pkg/httpclient/resty.go
+++ b/pkg/httpclient/resty.go
@@ -2,6 +2,7 @@ package httpclient
 
 import (
 	"errors"
+	"fmt"
 	"github.com/go-resty/resty/v2"
 	"integrity-checkin/data/dto"
 	"regexp"
@@ -14,10 +15,8 @@ func Setup() {
 	Client = resty.New().SetTimeout(10 * time.Second)
 }
 func SDULogin(username string, password string) (*dto.SDULoginData, error) {
-	resp, err := Client.R().SetFormData(map[string]string{
-		"username": username,
-		"password": password,
-	}).Post("https://pass.sdu.edu.cn/cas/restlet/tickets")
+	resp, err := Client.R().SetBody(fmt.Sprintf("username=%v&password=%v", username, password)).
+		Post("https://pass.sdu.edu.cn/cas/restlet/tickets")
 	if err != nil {
 		return nil, err
 	}