我有一个React的注册页面,需要将文件上传到服务器。这些文件需要进行Base64编码。
进行编码的函数如下:
getBase64(file) {
let document = "";
let reader = new FileReader();
reader.readAsDataURL(file);
reader.onload = function () {
document = reader.result;
};
reader.onerror = function (error) {
console.log('Error: ', error);
};
return document;
}
处理表单下一步按钮点击的函数如下:
handleNextButtonClick(event){
event.preventDefault();
let data = {domainId: this.props.user[0].domainId, name: steps.stepThree, values: this.state.files};
let idCard = this.state.files.filter(file => file.file_type === "ID_CARD")[0].values.file;
let statuses = this.state.files.filter(file => file.file_type === "STATUTES")[0].values.file;
let blankLetterHead = this.state.files.filter(file => file.file_type === "LETTER_HEAD")[0].values.file;
let companyPhoto = this.state.files.filter(file => file.file_type === "COMPANY_PICTURE")[0].values.file;
let idCardBase64 = this.getBase64(idCard);
let statusesBase64 = this.getBase64(statuses);
let blankLetterHeadBase64 = this.getBase64(blankLetterHead);
let companyPhotoBase64 = this.getBase64(companyPhoto);
}
如果我打印出例如this.state.files.filter(file => file.file_type === "ID_CARD")[0].values.file;
中的第一个结果,我会得到下面的结果:
看起来一切正常,但是我收到了错误:
Uncaught TypeError: Failed to execute 'readAsDataURL' on 'FileReader': parameter 1 is not of type 'Blob'.
有什么解决办法吗?
更新
let idCardBase64 = idCard ? this.getBase64(idCard) : "";
let statusesBase64 = statuses ? this.getBase64(statuses) : "";
let blankLetterHeadBase64 = blankLetterHead ? this.getBase64(blankLetterHead) : "";
let companyPhotoBase64 = companyPhoto ? this.getBase64(companyPhoto) : "";
我已更改它。在这种情况下仅存在 idCard
。现在我不会收到任何错误,但是idCardBase64
是""
而且没有进行Base64编码。
statuses = this.state.files.filter(file => file.file_type === "STATUTES")
,这应该是STATUSES还是STATUTES? - Daniel Andrei