微信小程序《赞赏》案例实战

import nami from '/nami/index';

App({
  data: {
    userInfo: null,
    rankLoaded: false //排行榜已加载
  },

  onLaunch: function () {
    var app = this;
    //登录
    nami.login(() => {
      nami.getUserInfo((userInfo) => {
        console.log("已获取数据", userInfo);
        app.data.userInfo = userInfo;
      }, () => {
        console.log("用户拒绝提供信息");
      });
    });
  }
})

    /**
     *下拉刷新
     */
    onPullDownRefresh: function () {
        wx.stopPullDownRefresh();
        var that = this;
		//这里使用了nami封装的request而不是wx.request
        nami.request({
            loading: true,
            url: '/request/scholes_pay/rank.groovy',
            success: function (res) {
                that.setData({
                    dataList: res.data.list
                });
                app.data.rankLoaded = true;//加载完成
            }
        });
    },

/**
 * 排行榜
 * @author woden
 */

//重点是这一句获取已登录的用户信息
//NAMI框架中通过nami_token在服务端缓存池找到对应的用户资料，并返回给逻辑代码
//这里的session指的是NAMI框架中封装的会话上下文
def user = session.appUser();

//根据被赞赏金额排名的用户列表
def list = db.query("""
select b.*,a.TOTAL_FEE from
(
	select sum(TOTAL_FEE) TOTAL_FEE,OPEN_ID from PAY_DETAIL group by OPEN_ID
) a 
left join PAY_USER b on a.OPEN_ID = b.OPEN_ID
order by a.TOTAL_FEE desc,b.UPDATE_TIME asc 
limit 10
""".toString());

def result = [];
def i=1;
for(def o:list){
	def vo = [:];
	vo.avatar = o.AVATAR_URL;
	vo.nickName = o.NICK_NAME;
	vo.fee = fmt.formatPrice(o.TOTAL_FEE/100);
	if(user.openId == o.OPEN_ID){
		vo.my = true;
	}
	vo.rank = i++;
	result += vo;
}

return [list:result];

  /**
   * 绑定选中赞赏金额按钮
   */
  selectItem: function (event) {
	//获取待支付金额，单位：元
    var total = event.currentTarget.dataset.item;
    var that = this;
    that.setData({ selected: total });

	//向服务端发起支付请求，获取wx.requestPayment需要的信息
    nami.request({
      loading: true,
      url: '/request/scholes_pay/pay.groovy',
      data: {
        total: total * 100 //元转为分
      },
      success: function (res) {
        console.log("获取支付密匙", res);

		//发起支付，根据服务端的返回填空
        wx.requestPayment({
          timeStamp: '' + res.data.signature.timestamp,
          nonceStr: res.data.signature.nonce,
          package: res.data.signature.pack,
          signType: 'MD5',
          paySign: res.data.signature.signature,
          success: function (res) {
            app.data.rankLoaded = false;//通知排行榜重新加载
            wx.showToast({
              title: '支付成功,感谢',
              icon: 'success'
            });
          },
          fail: function (res) {
            wx.showToast({
              title: '已取消支付',
              icon: 'success'
            });
          },
          complete: function () {
            that.setData({ selected: 0 });//取消选中
          }
        });

      },
      fail: function (res) {
		//do anything
      }
    });
  }

/**
 * 下单支付
 * 
 * @author woden
 *
 */

//获取当前用户
def user = session.appUser();
log.debug("user:{}",user);
if(!user?.nickName){
	nami.error("用户拒绝提供资料,无法支付.");
}

//更新用户信息
if(db.find("select OPEN_ID from PAY_USER where OPEN_ID=?",user.openId)){//找得到则更新
	db.exec("update PAY_USER set NICK_NAME=?,AVATAR_URL=?,UPDATE_TIME=? where OPEN_ID=?"
			,user.nickName
			,user.avatarUrl
			,now
			,user.openId
			);
}else{//否则新增
	db.exec("insert into PAY_USER (OPEN_ID,NICK_NAME,AVATAR_URL,UPDATE_TIME) values (?,?,?,?)"
			,user.openId
			,user.nickName
			,user.avatarUrl
			,now
			);
}

//支付下单
//调用NAMI框架的app.pay.order接口(封装了微信支付下单)，直接获取订单order对象
def total = request.getInteger("total");
def order =app.pay.order([
	openId : user.openId,
	total : total,
	body : '多谢赞赏',
	notify : nami.invoke('host.groovy')+'/request/scholes_pay/pay_callback.groovy' //回调
]);

//向客户端生成支付加密串
//调用NAMI框架的app.pay.signatur接口(根据prepayId换取支付密匙)
return [tradeNumber:order.tradeNumber,signature:app.pay.signature(order.prepayId)];