快速模式验证多部分/表单数据(正文应为对象)

Question

多部分表单数据文件更新时间到来错误正文应该是对象，我也在使用 AJV 插件，但我仍然在使用同样的问题。 以下是我的参考代码。

应用.js

const fastify = require('fastify')({
logger: true
});
const Ajv = require('ajv');
const ajv = new Ajv({
useDefaults: true,
coerceTypes: true,
$data: true,
extendRefs: true
});
ajv.addKeyword("isFileType", {
compile: (schema, parent, it) => {
parent.type = "file";
delete parent.isFileType;
return () => true;
},
});
fastify.setSchemaCompiler((schema) => ajv.compile(schema));

路线.js

schema: {
tags: [{
name: 'Category'
}],
description: 'Post category data',
consumes: ['multipart/form-data'],
body: {
type: 'object',
isFileType: true,
properties: {
name: {
type: 'string'
},
thumb_url: {
isFileType: true,
type: 'object'
},
img_url: {
isFileType: true,
type: 'object'
},
status: {
type: 'number',
enum: [0, 1],
default: 1
}
},
required: ['name', 'thumb_url', 'img_url']
},
response: {
201: {
type: 'object',
properties: categoryProperties
}
}
}

响应

{
"statusCode": 400,
"error": "Bad Request",
"message": "body should be object"
}

我怀疑错误在于我发送数据的方式，但我无法弄清楚。我已经阅读了有关此错误的信息，它似乎是在将对象传递给formData时生成的，但是我正在发送一个字符串，所以我不明白为什么会发生。提前感谢！

Answer 1

我认为您管理多部分的配置是错误的，应该将架构修复为以下工作示例：

const fastify = require('fastify')({ logger: true })
fastify.register(require('fastify-multipart'), {
addToBody: true
})
const Ajv = require('ajv')
const ajv = new Ajv({
useDefaults: true,
coerceTypes: true,
$data: true,
extendRefs: true
})
ajv.addKeyword('isFileType', {
compile: (schema, parent, it) => {
parent.type = 'file'
delete parent.isFileType
return () => true
}
})
fastify.setSchemaCompiler((schema) => ajv.compile(schema))
fastify.post('/', {
schema: {
tags: [{
name: 'Category'
}],
description: 'Post category data',
consumes: ['multipart/form-data'],
body: {
type: 'object',
properties: {
name: { type: 'string' },
thumb_url: { isFileType: true },
img_url: { isFileType: true },
status: {
type: 'number',
enum: [0, 1],
default: 1
}
},
required: ['name', 'thumb_url', 'img_url']
}
}
}, async (req, reply) => {
let filepath = path.join(__dirname, `${req.body.thumb_url[0].filename}-${Date.now()}`)
await fs.writeFile(filepath, (req.body.thumb_url[0].data))
filepath = path.join(__dirname, `${req.body.img_url[0].filename}-${Date.now()}`)
await fs.writeFile(filepath, (req.body.img_url[0].data))
return req.body
})
fastify.listen(3000)

使用此请求调用它：

curl -X POST 
http://127.0.0.1:3000/ 
-H 'content-type: multipart/form-data' 
-F 'thumb_url=@/home/wks/example-file' 
-F 'img_url=@/home/wks/example-file' 
-F 'name=fooo'

您将获得：

{
"thumb_url":[
{
"data":{
"type":"Buffer",
"data":[
97,
115,
100,
10
]
},
"filename":"example-file",
"encoding":"7bit",
"mimetype":"application/octet-stream",
"limit":false
}
],
"img_url":[
{
"data":{
"type":"Buffer",
"data":[
97,
115,
100,
10
]
},
"filename":"example-file",
"encoding":"7bit",
"mimetype":"application/octet-stream",
"limit":false
}
],
"name":"foo",
"status":1
}