If it is a network picture, you need to use the wx.getImageInfo method to generate a local temporary storage path, and canvas can be used

 

 

wx.getImageInfo({
    src: '网络图片地址',
    success(res) {
        console.log(res.path)//临时地址
    }
})

 

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Origin blog.csdn.net/huanglianggu/article/details/111997470