问无法获取React组件以重新呈现

EN

  constructor(){
    super();
    this.state = {upvoted:false}
    this.handleFavorite = this.handleFavorite.bind(this);
  }

  handleFavorite(event){
    event.preventDefault();

    console.log("handleFavorite fired");

    var query=location.pathname;
    query = query.split('/');
    var username1=query[2];
    var playlist=query[3];

    var vote = this.props.data.vote;

    var self = this;

    if (username1) {
      request
        .post('/api/endpoint')
        .end(function(err, res) {
              self.setState({upVoted: true});
              self.forceUpdate();
              console.log("status "+res.body.status);
      });
    }

  }

render() {
  return (
    <div onClick={this.handleFavorite}>stuff</div>
  );
}