从Reactjs前端向API发送请求头中的jwt

Question

我有一个快速问题。我使用Axios向nodejs API发送请求，当我在请求头中设置令牌时，API返回"；必须提供jwt"；。API期望令牌附加一个自定义名称——以下是我所取得的进展。

登录时发送令牌的API代码段：

const token = jwt.sign(
{
userID: result[0].userID,
firstName: result[0].firstName,
lastName: result[0].lastName,
email: result[0].email,
role: result[0].role,
// exp: Math.floor(Date.now() / 1000) + 60 * 60,
},
"HeyImaPrivateKeyyy"
);
res.json({ token });
console.log("Login Attempt", res.statusMessage, req.body);
} else {
res.status(400).send({ message: "Invalid credentials!" });
console.log("Login Attempt", res.statusMessage, req.body);
}

--从这里反应代码——

API对成功登录的响应：

{
"token": "eyJhbGciOiJIUzI1NiIsInR5cCI6IkpXVCJ9.eyJ1c2VySUQiOjEsImZpcnN0TmFtZSI6IkNhbWVyb24iLCJsYXN0TmFtZSI6IkVyYXNtdXMiLCJlbWFpbCI6ImNhbWVyb25AY2xpZnRjb2xsZWdlLmNvbSIsInJvbGUiOiJzdXBlckFkbWluIiwiaWF0IjoxNjYzMzEzNTM2fQ.9R6vXn-5Vb5fj48eUJGPNUGnXMw9TXOjJCox7U36WMI"
}

成功登录时保存令牌(React(

const login = async ({ email, password }) => {
const res = await api.post(
"/auth",
{
email: email, //varEmail is a variable which holds the email
password: password,
},
{
headers: {
"Content-type": "application/json",
Authorization: false,
},
}
);
const { from } = state || {};
let token = jwt(res.data.token);
setToken("x-auth-token", token); // your token
localStorage.setItem("x-auth-token", res.data.token);
localStorage.setItem("userLogged", true);
localStorage.setItem("name", token.firstName);
localStorage.setItem("role", token.role);
navigate("/auth/dashboard" || from.pathname, { replace: true });
};

下面是React组件，它正试图调用API：

const [count, setCount] = useState(null);
const token = localStorage.getItem("x-auth-token");
const studentCount = useEffect(() => {
const config = {
headers: { "x-auth-token": token },
"Content-type": "application/json",
};
api.get("/students/", {}, config).then((response) => {
setCount(response.data);
});
}, [token]);
if (!count) return null;

这就是API在请求时所期望的：

export const teacher = (req, res, next) => {
const token = req.header("x-auth-token");
if (!auth && !token)
return res.status(401).send({ message: "Access denied." });
const decoded = jwt.verify(token, "DemoPrivateKey");
if (auth && ["superAdmin", "admin", "teacher"].includes(decoded.role)) {
next();
} else {
res.status(400).send({ message: "Access denied!" });
}
};

理想情况下，我希望在成功登录时将令牌作为标头发送，但它在客户端上保存为未定义(不知道如何修复(。

Answer 1

如果你使用Axios，那么根据文档，get方法应该在第二个位置有config参数，而不是第三个。所以，也许简单地将api.get("/students/", {}, config)更新为api.get("/students/", config)就可以解决您的问题。