app = FastAPI()

oauth2_scheme = OAuth2PasswordBearer(
    tokenUrl="/token",
    description="OAuth2PasswordBearer security scheme",
    auto_error=False,
)


@app.get("/items/")
async def read_items(token: Optional[str] = Security(oauth2_scheme)):
    if token is None:
        return {"msg": "Create an account first"}
    return {"token": token}


client = TestClient(app)


def test_no_token():

    public void setToken_Equal(String token) {
        setToken_Term(token, null);
    }

    public void setToken_Equal(String token, ConditionOptionCall<TermQueryBuilder> opLambda) {
        setToken_Term(token, opLambda);
    }

    public void setToken_Term(String token) {
        setToken_Term(token, null);
    }

    public void setToken_Term(String token, ConditionOptionCall<TermQueryBuilder> opLambda) {

	// Create a custom split function by wrapping the existing ScanWords function.
	split := func(data []byte, atEOF bool) (advance int, token []byte, err error) {
		advance, token, err = bufio.ScanWords(data, atEOF)
		if err == nil && token != nil {
			_, err = strconv.ParseInt(string(token), 10, 32)
		}
		return
	}
	// Set the split function for the scanning operation.
	scanner.Split(split)
	// Validate the input

Update `get_current_user` to receive the same token as before, but this time, using JWT tokens.

Decode the received token, verify it, and return the current user.

If the token is invalid, return an HTTP error right away.

{* ../../docs_src/security/tutorial004_an_py310.py hl[90:107] *}

## Update the `/token` *path operation* { #update-the-token-path-operation }

  override fun hashCode(): Int = mediaType.hashCode()

  companion object {
    private const val TOKEN = "([a-zA-Z0-9-!#$%&'*+.^_`{|}~]+)"
    private const val QUOTED = "\"([^\"]*)\""
    private val TYPE_SUBTYPE = Regex("$TOKEN/$TOKEN")
    private val PARAMETER = Regex(";\\s*(?:$TOKEN=(?:$TOKEN|$QUOTED))?")

    /**
     * Returns a media type for this string.
     *

    }

    /**
     * Constructs a NegTokenInit by parsing the provided token bytes
     * @param token the SPNEGO token bytes to parse
     * @throws IOException if parsing fails
     */
    public NegTokenInit(final byte[] token) throws IOException {
        parse(token);
    }

    /**
     * Gets the context flags indicating security capabilities

 * <li>TOKEN_NAME - The name of the token parameter.</li>
 * <li>TOKEN_METHOD - The HTTP method to use for the token request (GET or POST).</li>
 * <li>TOKEN_PARAMTERS - The parameters to include in the token request.</li>
 * <li>LOGIN_METHOD - The HTTP method to use for the login request (GET or POST).</li>
 * <li>LOGIN_URL - The URL to send the login request to.</li>

	if err := updateClaimsExpiry("3600", claimsMap.MapClaims); err != nil {
		t.Error(err)
	}
	// Build simple token with updated expiration claim
	token := jwtgo.NewWithClaims(jwtgo.SigningMethodHS256, claimsMap)
	tokenString, err := token.SignedString(signKey)
	if err != nil {
		t.Error(err)
	}

	// Parse token to be sure it is valid
	err = jwtm.ParseWithClaims(tokenString, claimsMap, func(*jwtm.MapClaims) ([]byte, error) {

from fastapi.testclient import TestClient

app = FastAPI()

oauth2_scheme = OAuth2AuthorizationCodeBearer(
    authorizationUrl="authorize", tokenUrl="token", auto_error=True
)


@app.get("/items/")
async def read_items(token: Optional[str] = Security(oauth2_scheme)):
    return {"token": token}


client = TestClient(app)


def test_no_token():
    response = client.get("/items")

from fastapi.testclient import TestClient

app = FastAPI()

oauth2_scheme = OAuth2PasswordBearer(tokenUrl="/token", auto_error=False)


@app.get("/items/")
async def read_items(token: Optional[str] = Security(oauth2_scheme)):
    if token is None:
        return {"msg": "Create an account first"}
    return {"token": token}


client = TestClient(app)


def test_no_token():
    response = client.get("/items")