Get with json body will return Malformed JSON in request body

[Lyoko-Jeremie]

when i use a get and need batch query many params array (>1k) , i need put params in body .

practiceRouter.get('/status-batch',
    authMiddleware,
    permissionMiddleware([Permission.QUESTION_PRACTICE]),
    tbValidator('json', QuestionBatchGetBody, (result, c) => {
        if (!result.success) {
            return c.json({
                success: false,
                message: 'failed',
                errors: result.errors
            }, 400);
        }
    }),
    async (c) => {
        console.log('Batch get practice status');
        const user = c.get('user') as JwtPayloadUser;
        const body: Static<typeof QuestionBatchGetBody> = await c.req.json();

        const result = await ExamQuestionService.getPracticeStatus(user.userId, body.questionIds);
        return c.json(result, result.success ? 200 : 400);
    }
);

// ------------------------

export const QuestionBatchGetBody = Type.Object({
    questionIds: Type.Array(Type.String(), {description: 'ID list'}),
});

when use postman to test it with follow body , will get a 400 error Malformed JSON in request body

{
    "questionIds": [
        "68946d37efb4fb58c15aa0ed",
        "68946d37efb4fb58c15aa0f1"
    ]
}

but when i simple change it to post , everything work well. where is wrong ? how can i fix it ?

---

    "@hono/node-server": "^1.16.0",
    "@hono/oauth-providers": "^0.8.2",
    "@hono/swagger-ui": "^0.5.2",
    "@hono/typebox-validator": "^0.3.3",
    "@hono/zod-openapi": "^0.19.10",
    "@sinclair/typebox": "^0.34.38",
    "hono": "^4.8.12",
    "hono-rate-limiter": "^0.4.2",

node -v : v22.17.1

[edions]

Yeah, your problem happened cuz get requests don’t normally have a body, and postman, along with probably most http clients, either strip it or don’t send it in a way that hono expect. It’s probably best to switch the route method to post, as body parsing works reliably with it.

But if you really need to send a body with a get request, you'd need to bypass the default body parser behaviors.

practiceRouter.get("/status-batch", async (c) => {
  const raw = await c.req.text();
  const body = JSON.parse(raw || "{}");
  // ------------------------
});

However, this would still probably fail on most clients that refuse to send a body with get requests.

[Lyoko-Jeremie]

Thank you~

but i think that , on the frontend env, we have many way to send a body with get request , if we not care about restfull . we can send it by many libs , example axios/angular-httpClient/fetch and so on.