React结合AntD的upload组件写头像上传

upload组件里面action就是调upload接口，获取图片url地址

setImg获取url，点击保存传到后台

 

action 上传头像方法

//上传头像
    changeImg = info => {
        if (info.file.status === "uploading") {
            this.setState({ loading: true });
            return;
        }
        if (info.file.status === "done") {
            let {
                userStore: { setImg }
            } = this.props;
            setImg(info.file.response.data.url);  //根据实际后端接口数据结构获取数据
            this.getBase64(info.file.originFileObj, imageUrl =>
                this.setState({
                    imageUrl,
                    loading: false
                })
            );
        }
    };

    getBase64 = (img, callback) => {
        const reader = new FileReader();
        reader.addEventListener("load", () => callback(reader.result));
        reader.readAsDataURL(img);
    };

    beforeUpload = file => {
        const isJpgOrPng = file.type === 'image/jpeg' || file.type === 'image/png';
        if (!isJpgOrPng) {
            message.error('You can only upload JPG/PNG file!');
        }
        const isLt2M = file.size / 1024 / 1024 < 2;
        if (!isLt2M) {
            message.error('Image must smaller than 2MB!');
        }
        return isJpgOrPng && isLt2M;
    };

render

                               <FormItem {...formItemLayout} label={'头像'}>
                                    {getFieldDecorator('avatar', {
                                        initialValue: avatar
                                    })(

                                        <Upload
                                            accept=".jpg, .jpeg, .png"
                                            listType="picture-card"
                                            showUploadList={false}
                                            action="/staffs/UploadFile.json"    //后端提供的upload接口，返回url
                                            beforeUpload={this.beforeUpload} f
                                            onChange={this.changeImg}
                                            name="file"
                                            headers={{
                                                Authorization: sessionStorage.authToken
                                            }}
                                        >
                                        {imageUrl ? <img src={imageUrl} alt="avatar" style={{ width: '100%' }} /> : uploadButton}
                                        </Upload>
                                    )}
                                    <span>{'支持JPG/GIF/PNG格式'}</span>
                                </FormItem>