上传16进制文件

<input single ref={ref => this.handler = ref} id="icon-button-file" onChange={this.fileChanges}

accept={accept} type="file" style={{ display: 'none' }} />

<label htmlFor="icon-button-file">

<IconButton color="primary" aria-label="upload picture" component="span">

<IconUpload />

</IconButton>

{show&& <Typography variant="h7" component="span" color="primary" gutterBottom>

点击上传

</Typography>}

</label>

 

 

 

fileChanges = (event) => {

let source = event.target.files;

this.setState({ loading: true });

console.log(source)

if (source.length > 0) {

const reader = new FileReader();//

reader.onload = rest => {

const fix = this.buf2hex(rest.target.result);

console.log(fix)

let file = source[0];

let hf = file.name;

const len = hf.lastIndexOf('.');

console.log(len)

hf = hf.substring(len + 1);

console.log(hf)

this.wrapFiles({

value: fix,

key: file.type,

extra: hf,

remark: file.name

});

};

reader.readAsArrayBuffer(source[0]);

}

}

 

 

 

buf2hex = (buffer) => { // buffer is an ArrayBuffer

console.log(buffer)

return Array.prototype.map.call(new Uint8Array(buffer), x => ('00' + x.toString(16)).slice(-2)).join('');

}

 

 

 

 

wrapFiles = (input) => {

const { onChange } = this.props;

this.setState({ file: input, loading: false });

if (onChange)

onChange(input);

}