React 父组件修改props修改子组件state值

1.父组件修改传值

if (res.code === 10000) {
       this.setState({
            OPT_ROLE_CODE: res.data.rows[0].role
       })
}

　　

<OperatorsInfoTab
      OPT_ROLE_CODE={this.state.OPT_ROLE_CODE}
>

2.子组件获取

componentWillReceiveProps(nextProps){
    this.setState({
        role: nextProps.OPT_ROLE_CODE
    })
}