我发现，当fetch从api获取到数据之后，

fetch(`http://newsapi.gugujiankong.com/Handler.ashx?action=getuc&userid=${localStorage.userId}`, {method: 'GET'})
.then(res => res.json())
.then(json => {
   this.setState({usercollection: json});
});

this.setState()会导致网页卡顿，查看控制台会报错堆栈溢出

而把this.setState注释就没事，请问老师遇到过这钟情况吗？

我有种猜测，fetch获得数据比较多，然后this.setState运行比较吃力？

以下是我自己个人中心页的源代码

import React, {Component} from 'react';
import PCHeader from './pc_header';
import PCFooter from './footer';
import {
  Tabs,
  Row,
  Col,
  Upload,
  Modal,
  Icon,
  Card
} from 'antd';
const TabPane = Tabs.TabPane;
export default class PCUserCenter extends Component {
  constructor() {
    super();
    this.state = {
      usercollection: '',
      usercomments: '',
      previewImage: '',
      previewVisible: false
    }
  }
  componentDidMount() {
    fetch(`http://newsapi.gugujiankong.com/Handler.ashx?action=getuc&userid=${localStorage.userId}`, {method: 'GET'})
    .then(res => res.json())
    .then(json => {
      this.setState({usercollection: json});
    });
    fetch(`http://newsapi.gugujiankong.com/Handler.ashx?action=getusercomments&userid=${localStorage.userId}`, {method: 'GET'})
    .then(res => res.json())
    .then(json => {
      this.setState({usercomments: json});
    });
  }
  handleCancel() {
    this.setState({previewVisible: false});
  }
  render() {
    const {usercollection, usercomments} = this.state;
    const usercollectionList = usercollection.length
      ? usercollection.map((uc, index) => (
        <Card key={index} title={uc.uniquekey} extra={< a href = {
          `/#/details/${uc.uniquekey}`
        } > 查看 < /a>}>
          <p>{uc.Title}</p>
        </Card>
      )).reverse()
      : '您还没有收藏任何新闻';
    const usercommentsList = usercomments.length
      ? usercomments.map((comment, index) => (
        <Card key={index} title={`您于${comment.datetime}评论了文章 ${comment.uniquekey}`} extra={< a href = {
          `/#/details/${comment.uniquekey}`
        } > 查看 < /a>}>
          <p>{comment.Comments}</p>
        </Card>
      )).reverse()
      : '您还没有发表过任何评论';
    let props = {
      action: 'http://newsapi.gugujiankong.com/Handler.ashx',
      headers: {
        "Access-Control-Allow-Origin": "*"
      },
      listType: 'picture-card',
      defaultFileList: [
        {
          uid: -1,
          name: 'xxx.png',
          state: 'done',
          url: 'https://os.alipayobjects.com/rmsportal/NDbkJhpzmLxtPhB.png',
          thumbUrl: 'https://os.alipayobjects.com/rmsportal/NDbkJhpzmLxtPhB.png'
        }
      ],
      onPreview: (file) => {
        this.setState({previewImage: file.url, previewVisible: true});
      }
    };
    return (
      <div>
        <PCHeader/>
        <Row>
          <Col span={2}></Col>
          <Col span={20}>
            <Tabs>
              <TabPane tab="我的收藏列表" key="1">
                <div className="comment">
                  <Row>
                    <Col span={24}>
                      {usercollectionList}
                    </Col>
                  </Row>
                </div>
              </TabPane>
              <TabPane tab="我的评论列表" key="2">
                <div className="comment">
                  <Row>
                    <Col span={24}>
                      {usercommentsList}
                    </Col>
                  </Row>
                </div>
              </TabPane>
              <TabPane tab="头像设置" key="3">
                <div className="clearfix">
                  <Upload {...props}>
                    <Icon type="plus"/>
                    <div className="ant-upload-text">上传照片</div>
                  </Upload>
                  <Modal visible ={this.state.previewVisible} footer={null} onCancel={this.handleCancel.bind(this)}>
                    <img alt="预览" src={this.state.previewImage}/>
                  </Modal>
                </div>
              </TabPane>
            </Tabs>
          </Col>
          <Col span={2}></Col>
        </Row>
        <PCFooter/>
      </div>
    );
  }
}