第一步

<u-form-item label="结束时间" prop="endDate" label-width="200">
                 <u-input type="select" v-model="form.endDate" placeholder="请选择" @click="end_time_show = true"></u-input>
                 <u-picker mode="time" v-model="end_time_show" @confirm="confirm2" :params="params"></u-picker>
             </u-form-item>

第二部

confirm2(e) {
                 console.log(e);
                 let date = e.year + '-' + e.month + '-' + e.day + " " + e.hour + ':' + e.minute + ':' + e.second
                 this.form.endDate = date
             },