https://developers.weixin.qq.com/miniprogram/dev/api/canvas/CanvasContext.drawImage.html

drawImage( )不支持本地tmp路径的临时文件，谨慎使用，太坑了。

写法1.

```

path = ‘tmp/wxf65e9ae5f68283d2.o6zAJs5h4IkyHaGS7_j6gUPGTR9c.arwyj04Eq2ok341457e272957e237fa21d743912f60b.jpg’

ctx.drawImage(path, 0, 0, width, height, 0, 0, canvasWidth, canvasHeight)

```

提示：Failed to execute ‘drawImage’ on ‘CanvasRenderingContext2D’: The provided value is not of type ‘(CSSImageValue or HTMLImageElement or SVGImageElement or HTMLVideoElement or HTMLCanvasElement or ImageBitmap or OffscreenCanvas)’;at SelectorQuery callback function

写法2.

```

const img = canvas.createImage()

img.src = path

img.onload = () =>{

    ctx.drawImage(img, 0, 0, width, height, 0, 0, canvasWidth, canvasHeight)

}

```

提示：tmp/wxf65e9ae5f68283d2.o6zAJs5h4IkyHaGS7_j6gUPGTR9c.arwyj04Eq2ok341457e272957e237fa21d743912f60b.jpg:1 GET http://tmp/wxf65e9ae5f68283d2.o6zAJs5h4IkyHaGS7_j6gUPGTR9c.arwyj04Eq2ok341457e272957e237fa21d743912f60b.jpg net::ERR_PROXY_CONNECTION_FAILED