pbl-student-table/js/jietu4.js

function jietu_shishi(uid, cid, stage, task, tool) {
  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, stage, task, tool)
    // $("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, stage, task, tool, loading, atool, text) {
  // loading.style.display = 'flex'
  // top.document.getElementById(loading);
  //  document.body.appendChild(_loading)
  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, stage, task, tool, data.Location, loading, atool, text)
      });
  }
}

function addSWork_shishi(uid, cid, stage, task, tool, a, loading,atool, text) {
  let params = {
    uid: uid,
    cid: cid,
    stage: stage,
    task: task,
    tool: tool,
    content: a,
    type: 1,
    atool:atool,
    text:text
    // upload: JSON.stringify(this.imgFileUp),
  };
  $.ajax({
    type: 'POST',
    url: 'https://pbl.cocorobo.cn/api/pbl/addCourseWorks4s',
    data: params,
    dataType: "json",
    error: (XMLHttpRequest, textStatus, errorThrown) => {
      var _a = document.getElementsByTagName("img")
      for (var i = 0; i < _a.length; i++) {
        _a[i].removeAttribute("crossorigin")
      }
      top.document.getElementById(loading).children[0].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 = "上传失败，网络错误"
      _div.appendChild(_inner)
      document.body.appendChild(_div)
      setTimeout(() => {
        document.body.removeChild(_div)
      }, 1000);
    },
    success: (data) => {
      setTimeout(() =>{
        var _a = document.getElementsByTagName("img")
        for (var i = 0; i < _a.length; i++) {
          _a[i].removeAttribute("crossorigin")
        }
        top.document.getElementById(loading).children[0].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 = "截图上传成功"
        _div.appendChild(_inner)
        document.body.appendChild(_div)
        setTimeout(() => {
          //  document.body.removeChild(_loading)
          document.body.removeChild(_div)
        }, 1000);
        console.log("截图上传成功");
      },3000)
    }
  })
}