react antd表格中渲染一张或多张图片的实例

Z时代
2024-01-10
分类：IT

使用antd table中显示一张图片，代码如下：


const columns = [ {
 title: "姓名",
 dataIndex: "name",
 width: 100 , // table列定宽 可不设
  fixed: "left" // 固定列的位置
 },
 {
 title: "联系电话",
 width: 150,
 dataIndex: "phone"
 },
 {
 title:"显示一张图片",
 width:150，
 dataIndex:"img"，
 render：(text)=> <img src={text}/>
 },
 {
 title:"显示多张图片",
 width:400，
 dataIndex:"imgs"，
 render: text => {
 // text是后端传的多个url，需要逗号分隔再显示图片
  if (text) {
  return (
   <div style={{ display: "flex" }}>
   {text.split(",").map((items, index) => {
    return (
    <div
     key={index}
     className="common-img-list"
     style={{
     width: "100px",
     height: "100px",
     marginLeft: "4px",
     overflow: "hidden"
     }}
    >
     <img
     style={{ width: "100%" }}
     src={items}
     onClick={() => {
      InitImageViwer(); // 点击放大图片
     }}
     />
    </div>
    );
   })}
   </div>
  );
  }
 },
]
// 点击放大图片预览
function InitImageViwer(
 box = 'common-img-list', // 注意class不要忘记了
 option = {},
 callBack
) {
 setTimeout(() => {
 const viewList = []
 const el = document.querySelectorAll(`.${box}`)
 if (el.length) {
  el.forEach((z, x) => {
  viewList[x] = new ImageViewer(z, option)
  })
  callBack && callBack(viewList)
 }
 }, 1000)
}
// table 使用 scroll 表格滚动
<Table columns={columns} scroll={{ x: 1500, y: 500 }} />

实现效果图：

点击图片放大预览效果：

补充知识：React中antd框架下upload多个图片简单上传

antd的上传组件也是挺好康的，预览、删除也特别方便。适合表单上传。

查询资料多个上传处理不明确，我就在下面name为file的input隐藏域内储存多个图片上传

这行代码是限制多个图片上传的总数，这里目前是不能超过6张图片，到达六张图片后，点击上传的按钮将会消失。

{this.props.tAccessory >= 6 ? null : uploadButton}

点击眼睛会弹出modl框扩大显示图片。

全文代码如下，稍加修改即可使用。


import React from 'react';
import { Form, Input,Upload,Icon,Modal} from 'antd';
import { connect } from 'dva';
const FormItem = Form.Item;
const { TextArea } = Input;
function getBase64(file) {
 return new Promise((resolve, reject) => {
 const reader = new FileReader();
 reader.readAsDataURL(file);
 reader.onload = () => resolve(reader.result);
 reader.onerror = error => reject(error);
 });
}
class AddMa extends React.Component {
 state = {
 value: '',
 previewVisible: false,
 previewImage: '',
 fileList:[],
 };
 onChange = ({ target: { value } }) => {
 this.setState({ value });
 };
//场地图片
 handleCancel = () => this.setState({ previewVisible: false });
 handlePreview = async file => {
 if (!file.url && !file.preview) {
  file.preview = await getBase64(file.originFileObj);
 }
 this.setState({
  previewImage: file.url || file.preview,
  previewVisible: true,
 });
 console.log(file);
 };
 handleChange = ({ fileList }) => this.setState({ fileList:fileList });
 beforeUpload=(file)=>{
  this.setState(({
  fileList: [this.state.fileList, file],
  }));
 return false;
 }
 render() {
 const { previewVisible, previewImage, fileList,value} = this.state;
 const uploadButton = (
  <div>
  <Icon type="plus" />
  <div className="ant-upload-text">Upload</div>
  </div>
 );
 const { getFieldDecorator } = this.props.form;
 const formItemLayout = {
  labelCol: { span: 8 },
  wrapperCol: { span: 10 },
 };
 const props={fileList};
 return (
  <div>
  <Form>
   <FormItem{...formItemLayout} label="现场图片">
   {getFieldDecorator('fileList',{initialValue:this.props.tAccessory,valuePropName: 'file'})
   (
    <div >
    <Upload name="file" {...props}
      listType="picture-card"
      onPreview={this.handlePreview}
      onChange={this.handleChange}
      fileList={fileList}
      accept=".jpg,.png,.gif,.jpeg"
      beforeUpload={this.beforeUpload}
    >
     {this.props.tAccessory >= 6 ? null : uploadButton}
    </Upload>
    <Modal visible={previewVisible} footer={null} onCancel={this.handleCancel}>
     <img alt="example" style={{ width: '100%' }} src={previewImage} />
    </Modal>
    </div>
   )}</FormItem>
  //这里是多个上传获取到的PhotoList 
   <FormItem{...formItemLayout} >
   {getFieldDecorator('file',{initialValue:this.props.tAccessory,valuePropName: 'file'})
   (
    <input type="hidden" name="img" multiple="multiple" />
   )}</FormItem>
  </Form>
  </div>
 );
 }
}
function mapStateToProps(state) {
 const {csIntro,arPicture,tCsInfo,modelResult,tAccessory} = state.cusy;
 return {csIntro,arPicture,tCsInfo,modelResult,tAccessory};
}
export default connect(mapStateToProps)(Form.create()(AddMa));