pbl-student-table/js/jietu.js

let $ = $.ajax ? $ : $jq

function jietu_shishi(uid, cid, page, type) {
    html2canvas($("body")[0]).then(function(canvas) {
        //获取截取图片路径

        var base64Url = canvas.toDataURL('image/png');
        //后台操作处理

        var base64 = "<img src=" + base64Url + " />"
        var file = dataURLtoFile_shishi(base64Url, "截图")
        beforeUpload_shishi(file, uid, cid, page, type)
            // $("body")[0].innerHTML = base64
    });
}

function dataURLtoFile_shishi(dataurl, filename) {
    let arr = dataurl.split(","),
        mime = arr[0].match(/:(.*?);/)[1],
        bstr = atob(arr[1]),
        n = bstr.length,
        u8arr = new Uint8Array(n);
    while (n--) {
        u8arr[n] = bstr.charCodeAt(n);
    }
    return new File([u8arr], filename, {
        type: mime
    });
}


function beforeUpload_shishi(nfile, uid, cid, page, type) {
    var file = nfile;
    var credentials = {
        accessKeyId: "AKIATLPEDU37QV5CHLMH",
        secretAccessKey: "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",
    }; //秘钥形式的登录上传
    window.AWS.config.update(credentials);
    window.AWS.config.region = "cn-northwest-1"; //设置区域

    var bucket = new window.AWS.S3({
        params: {
            Bucket: "ccrb"
        }
    }); //选择桶

    if (file) {
        var params = {
            Key: file.name.split(".")[0] + new Date().getTime() + "." + "png",
            ContentType: file.type,
            Body: file,
            "Access-Control-Allow-Credentials": "*",
            ACL: "public-read",
        }; //key可以设置为桶的相抵路径，Body为文件， ACL最好要设置
        var options = {
            partSize: 2048 * 1024 * 1024,
            queueSize: 2,
            leavePartsOnError: true,
        };
        bucket.upload(params, options)
            .on("httpUploadProgress", function(evt) {
                //这里可以写进度条
                // console.log("Uploaded : " + parseInt((evt.loaded * 80) / evt.total) + '%');
            }).send(function(err, data) {
                console.log(data.Location);
                var a = {
                    name: file.name,
                    url: data.Location,
                    uid: file.uid,
                }
                addSWork_shishi(uid, cid, a, page, type)
            });
    }
}

function addSWork_shishi(uid, cid, a, page, type) {
    let params = {
        uid: uid,
        cid: cid,
        p: page,
        t: type,
        // upload: JSON.stringify([{
        //   upImg: [a],
        //   upVedio: [],
        //   upIntro: "",
        // }]), 
        upload: a.url,
        // upload: JSON.stringify(this.imgFileUp),
    };
    $.ajax({
        type: 'GET',
        url: 'https://pbl.cocorobo.cn/api/pbl/insertSWork',
        data: params,
        dataType: "json",
        success: (data) => {
            var _a = document.getElementsByTagName("img")
            for (var i = 0; i < _a.length; i++) {
                _a[i].removeAttribute("crossorigin")
            }
            parent.document.getElementById("shishi_loading").style.display = "none"
            let _div = document.createElement('div')
            _div.style = "width:100%;height:100%;background:#0000008f;position:fixed;top:0;left:0;z-index:99999999999999;display: flex;justify-content: center;align-items: center;"
            let _inner = document.createElement('div')
            _inner.style = "color: #fff;padding: 15px;background: #00000070;border-radius: 5px;font-size: 18px;"
            _inner.innerHTML = "Screenshot uploaded"
            _div.appendChild(_inner)
            document.body.appendChild(_div)
            setTimeout(() => {
                //  document.body.removeChild(_loading)
                document.body.removeChild(_div)
            }, 2000);
            console.log("Screenshot uploaded");
        }
    })
}