我正在尝试创建一个具有express,打字稿和ejs的REST作为视图引擎,以在前端显示数据。我已经在ejs中创建了一个表单:
<form action="/app" method="post">
<div class="input-group mb-3">
<label>
<input type="text" name="title" placeholder="Title" class="form-control">
</label>
</div>
<div class="form-group">
<label>
<input name="url" placeholder="Url" class="form-control">
</label>
</div>
<div class="form-group">
<label>
<textarea type="text" name="description" placeholder="Description"
class="form-control"></textarea>
</label>
</div>
<div class="form-group">
<button class="btn btn-success btn-block" type="submit">
Send
</button>
</div>
</form>
此表单将POST请求发送到路由/app
,然后应执行以下功能:
public async saveLink(req: Request, res: Response): Promise<void> {
console.log(req.body)
const {title, url, description} = req.body;
const newLink = new LinkModel({title, url, description});
await newLink.save();
res.json({status: res.status, data: newLink});
}
在控制台中,该函数将打印:
{}
(node:22256) UnhandledPromiseRejectionWarning: ValidationError: LinkModel validation failed: title: Path `title` is required., url: Path `url` is required.
at model.Document.invalidate (C:\Users\pablo\Desktop\Trabajo\Programación\Yt-video-keeper\node_modules\mongoose\lib\document.js:2574:32)
at C:\Users\pablo\Desktop\Trabajo\Programación\Yt-video-keeper\node_modules\mongoose\lib\document.js:2394:17
at C:\Users\pablo\Desktop\Trabajo\Programación\Yt-video-keeper\node_modules\mongoose\lib\schematype.js:1181:9
at processTicksAndRejections (internal/process/task_queues.js:79:11)
(Use `node --trace-warnings ...` to show where the warning was created)
(node:22256) UnhandledPromiseRejectionWarning: Unhandled promise rejection. This error originated either by throwing inside of an async function without a catch block, or by rejecting a promise which was not handled with .catch(). To terminate the node process on unhandled promise rejection, use the CLI flag `--unhandled-rejections=strict` (see https://nodejs.org/api/cli.html#cli_unhandled_rejections_mode). (rejection id: 1)
(node:22256) [DEP0018] DeprecationWarning: Unhandled promise rejections are deprecated. In the future, promise rejections that are not handled will terminate the Node.js process with a non-zero exit code.
如您所见,其将req.body打印为空对象,因此不会获取数据。但是当我通过POSTMAN发送数据时,它可以正常工作并将对象保存到数据库中
答案 0 :(得分:1)
在sending data via an HTML form时,应注意请求的标头。
在这种情况下,相关的标头是:
docker exec -it fakeagent-8080 sh
apk update
apk add curl
这意味着您在服务器端收到的请求正文将不是JSON格式(因此被解析为空对象)。
因此,为了像您一样使用请求的正文,您首先需要解析它。
幸运的是,您可以使用一些外部库将其转换为JSON格式,如here所述。