我正在Unity上创建一个注册场景.在后端我有MongoDB的NodeJS服务器.注册成功,数据也保存在Mongo上.
这是我的NodeJS api用于注册
api.post('/register',(req,res) => {
Account.register(new Account({username: req.body.username}),req.body.password,function(err,account){
console.log("acc: "+account);
if(err){
if (err.name == "UserExistsError") {
console.log("User Exists");
return res.status(409).send(err);
}else {
console.log("User Error 500");
return res.status(500).send(err);
}
}else {
let newUser = new User();
newUser.accountid = account._id;
newUser.name = req.body.fullname;
newUser.gender = req.body.gender;
newUser.role = req.body.role;
newUser.country = req.body.country;
newUser.coins = req.body.coins;
newUser.save(err => {
if(err){
console.log(err);
return res.send(err);
}else{
console.log('user saved');
res.json({ message: 'User saved' });
}
});
passport.authenticate(
'local',{
session: false
})(req,res,() => {
res.json({ registermsg: 'Successfully created new account'});
});
}
});
});
这是我在Unity C中的POST协同程序#
IEnumerator Post(string b) {
byte[] bytes = System.Text.Encoding.ASCII.GetBytes(b);
using (UnityWebRequest www = new UnityWebRequest(BASE_URL,UnityWebRequest.kHttpVerbPOST)) {
UploadHandlerRaw uH = new UploadHandlerRaw(bytes);
www.uploadHandler = uH;
www.SetRequestHeader("Content-Type","application/json");
yield return www.Send();
if (www.isError) {
Debug.Log(www.error);
} else {
lbltext.text = "User Registered";
Debug.Log(www.ToString());
Debug.Log(www.downloadHandler.text);
}
}
}
我正在尝试Debug.Log(www.downloadHandler.text);但是我得到了NullReferenceException.
我想问一下,我正在使用的方式在我的api中返回响应是否正确？如果是,我如何在Unity端使用该响应.
解决方法
UnityWebRequest.Post,UnityWebRequest.Get和其他创建UnityWebRequest新实例的UnityWebRequest
functions将自动附加DownloadHandlerBuffer.
现在,如果使用UnityWebRequest构造函数创建UnityWebRequest的新实例,则DownloadHandler不会附加到该新实例.您必须使用DownloadHandlerBuffer手动执行此操作.
IEnumerator Post(string b)
{
byte[] bytes = System.Text.Encoding.ASCII.GetBytes(b);
using (UnityWebRequest www = new UnityWebRequest(BASE_URL,UnityWebRequest.kHttpVerbPOST))
{
UploadHandlerRaw uH = new UploadHandlerRaw(bytes);
DownloadHandlerBuffer dH = new DownloadHandlerBuffer();
www.uploadHandler = uH;
www.downloadHandler = dH;
www.SetRequestHeader("Content-Type","application/json");
yield return www.Send();
if (www.isError)
{
Debug.Log(www.error);
}
else
{
lbltext.text = "User Registered";
Debug.Log(www.ToString());
Debug.Log(www.downloadHandler.text);
}
}
}
