wechat-cloud-notes/cloudfunctions/OCR_getPrint/index.js

// 云函数入口文件
const cloud = require('wx-server-sdk')

cloud.init()

// 云函数入口函数
exports.main = async (event, context) => {

    const{
        buffer
    } =event
    let imgBuffer=new Buffer(buffer)
    let result
    result=await cloud.openapi.ocr.printedText({
        type:"photo",
        img:{
            contentType:"image/png",
            value:imgBuffer
        }
    })
    return result
}