微信小程序如何处理图片

// 获取图片路径
const image路径 = '/path/to/image.jpg';

// 使用wx.getImageInfo获取图片信息
wx.getImageInfo({
	src: image路径,
	success: (res) => {
			// 获取图片信息成功
			const width = res.width;
			const height = res.height;

			// 缩放图片
			const scale = 0.5; // 缩放比例
			const newWidth = width * scale;
			const newHeight = height * scale;
			const newImagePath = `/path/to/new_image.jpg`; // 新图片路径
			wx.canvasToTempFilePath({
				x: 0,
				y: 0,
				width: newWidth,
				height: newHeight,
				destWidth: newWidth,
				destHeight: newHeight,
				canvasId: 'myCanvas',
				success: (res) => {
					// 生成新图片成功
					const tempFilePath = res.tempFilePath;
					// 将新图片保存到指定路径
					wx.saveImageToPhotosAlbum({
						filePath: tempFilePath,
						success: (res) => {
							console.log('图片保存成功');
						},
						fail: (res) => {
							console.log('图片保存失败');
						}
					});
				},
				fail: (res) => {
					console.log('图片缩放失败');
				}
			});
		},
		fail: (res) => {
			console.log('获取图片信息失败');
		}
});