大佬教程收集整理的这篇文章主要介绍了如何从 image::ImageBuffer 到 actix_web::HttpResponse，大佬教程大佬觉得挺不错的，现在分享给大家，也给大家做个参考。
目标是使用板条箱 initialValues 生成二维码，并立即将其作为 import { Form,input,button,Space } from "antd";
import { MinusCircLeoutlined,PlusOutlined } from "@ant-design/icons";
import React from "react";
//Basic IDea
/*
I want the user to be able to edit some details of a purchase order that already exists in the database,then resubmit the order with a form.
The details of the purchase order should be orginally displayed in the form input fIElds,and the user can change them directly via those fIElds.
*/
//This is the order that already exists
const order = {
po_number: "123abc",carrIEr: "Fastway",items: [
{
item_code: "dnh75n",quantity: "10",special_requirements: "Add picture of happy dog"
},{
item_code: "456def",quantity: "4",special_requirements: "Do not include lIDs"
}
]
};
const GroupForm = () => {
const onFinish = (values) => {
console.log(values);
};
//Create form fIElds based off how many items are in the order
const iteminputs = order.items.map((item) => {
return {
item_code: item.item_code,quantity: item.quantity,special_requirements: item.special_requirements
};
});
return (
<div>
<Form onFinish={onFinish}>
<b>{"Order " + order.po_number}</b>
<Form.Item name="carrIEr" label="carrIEr" initialValue={order.carrIEr}>
<input style={{ wIDth: "500px" }} />
</Form.Item>
<Form.Item
name="po_number"
label="PO number"
initialValue={order.po_number}
hIDden
>
<input />
</Form.Item>
<b>Order Items</b>
<Form.List name="items" initialValue={iteminputs}>
{(fIElds,{ add,remove }) => (
<>
{fIElds.map((fIEld) => (
<Space
key={fIEld.key}
style={{ display: "flex",marginBottom: 8 }}
align="baseline"
>
<Form.Item
{...fIElD}
name={[fIEld.name,"item_code"]}
fIEldKey={[fIEld.fIEldKey,"item_code"]}
>
<input placeholder="Item Code" />
</Form.Item>
<Form.Item
{...fIElD}
name={[fIEld.name,"quantity"]}
fIEldKey={[fIEld.fIEldKey,"quantity"]}
>
<input placeholder="Quantity" />
</Form.Item>
<Form.Item
{...fIElD}
name={[fIEld.name,"special_requirements"]}
fIEldKey={[fIEld.fIEldKey,"special_requirements"]}
>
<input placeholder="Quantity" />
</Form.Item>
<MinusCircLeoutlined onClick={() => remove(fIEld.Name)} />
</Space>
))}
<Form.Item>
<button
type="dashed"
onClick={() => add()}
block
icon={<PlusOutlined />}
>
Add item
</button>
</Form.Item>
</>
)}
</Form.List>
<Form.Item>
<button type="priMary" HTMLType="submit">
{" "}
Change Details{" "}
</button>
</Form.Item>
</Form>
</div>
);
};
export default GroupForm;
//I want to submit a form object that looks like this. E.g. This is what 'onFinish' should display in the console
/*
{
po_number:"123abc",carrIEr:"Fastway",items: [{
item_code:"dnh75n",quantity:"10",special_requirements:"Add picture of happy dog"
},{
item_code:"456def",quantity:"4",special_requirements:"Do not include lIDs"
}
]
}
*/
文件发送以使用 actix-web 下载
到目前为止我有：
qrcode其中包含二维码。我可以使用它的 png 方法将其保存到文件中。但理想情况下，我不会承担这些开销，而是立即发送文件。但是我未能将正确的数据传递给 let qr = QrCode::new(&format!("http://example.com/{}",&link_ID)).unwrap();
let png: ImageBuffer<Luma<u8>,Vec<u8>> = qr.render::<Luma<u8>>().build();
。
我尝试了以下编译但只发送了无法查看的错误图像：
.save()像这样：
let qr = QrCode::new("http://example.com/xyz").unwrap();
let png: ImageBuffer<Luma<u8>,Vec<u8>> = qr.render::<Luma<u8>>().build();
let mut w = cursor::new(Vec::new());
DynamicImage::ImageLuma8(png)
.write_to(&mut w,ImageOutputFormat::Png)
.unwrap();
let vec = w.into_inner();
// vec now contains the PNG bytes
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