微信小程序支付功能的前端代码实例

varapp = getApp();

Page({

data: {},

onLoad:function(options) {

// 页面初始化 options为页面跳转所带来的参数

varthat =this

//登陆获取code

wx.login({

success:function(res) {

console.log(res.code)

//获取openid

that.getOpenId(res.code)

}

});

},

getOpenId:function(code) {

varthat =this;

wx.request({

url:"https://api.weixin.qq.com/sns/jscode2session?appid=小程序appid&secret=小程序应用密钥&js_code="+ code +"&grant_type=authorization_code",

data: {},

method:'GET',

success:function(res) {

that.generateOrder(res.data.openid)

},

fail:function() {

// fail

},

complete:function() {

// complete

}

})

},

/**生成商户订单 */

generateOrder:function(openid) {

varthat =this

//统一支付

wx.request({

url:'后台路径',

method:'GET',

data: {

gfee:'商品价钱',

gname:'商品名称',

openId:openid

（商品价钱和商品名称根据自身需要是否传值,openid为必传）

},

success:function(res) {

varpay = res.data

//发起支付

vartimeStamp = pay[0].timeStamp;

varpackages = pay[0].package;

varpaySign = pay[0].paySign;

varnonceStr = pay[0].nonceStr;

varparam = {"timeStamp": timeStamp,"package": packages,"paySign": paySign,"signType":"MD5","nonceStr": nonceStr };

that.pay(param)

},

})

},

/* 支付 */

pay:function(param) {

console.log("支付")

console.log(param)

wx.requestPayment({

timeStamp: param.timeStamp,

nonceStr: param.nonceStr,

package: param.package,

signType: param.signType,

paySign: param.paySign,

success:function(res) {

// success

wx.navigateBack({

delta: 1,// 回退前 delta(默认为1) 页面

success:function(res) {

wx.showToast({

title:'支付成功',

icon:'success',

duration: 2000

})

},

fail:function() {

// fail

},

complete:function() {

// complete

}

})

},

fail:function(res) {

// fail

},

complete:function() {

// complete

}

})

}

})

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微信小程序 支付功能（前端）的实现

只提供微信小程序端代码：

varapp = getApp();

Page({

data: {},

onLoad:function(options) {

// 页面初始化 options为页面跳转所带来的参数

varthat =this

//登陆获取code

wx.login({

success:function(res) {

console.log(res.code)

//获取openid

that.getOpenId(res.code)

}

});

},

getOpenId:function(code) {

varthat =this;

wx.request({

url:"https://api.weixin.qq.com/sns/jscode2session?appid=小程序appid&secret=小程序应用密钥&js_code="+ code +"&grant_type=authorization_code",

data: {},

method:'GET',

success:function(res) {

that.generateOrder(res.data.openid)

},

fail:function() {

// fail

},

complete:function() {

// complete

}

})

},

/**生成商户订单 */

generateOrder:function(openid) {

varthat =this

//统一支付

wx.request({

url:'后台路径',

method:'GET',

data: {

gfee:'商品价钱',

gname:'商品名称',

openId:openid

（商品价钱和商品名称根据自身需要是否传值,openid为必传）

},

success:function(res) {

varpay = res.data

//发起支付

vartimeStamp = pay[0].timeStamp;

varpackages = pay[0].package;

varpaySign = pay[0].paySign;

varnonceStr = pay[0].nonceStr;

varparam = {"timeStamp": timeStamp,"package": packages,"paySign": paySign,"signType":"MD5","nonceStr": nonceStr };

that.pay(param)

},

})

},

/* 支付 */

pay:function(param) {

console.log("支付")

console.log(param)

wx.requestPayment({

timeStamp: param.timeStamp,

nonceStr: param.nonceStr,

package: param.package,

signType: param.signType,

paySign: param.paySign,

success:function(res) {

// success

wx.navigateBack({

delta: 1,// 回退前 delta(默认为1) 页面

success:function(res) {

wx.showToast({

title:'支付成功',

icon:'success',

duration: 2000

})

},

fail:function() {

// fail

},

complete:function() {

// complete

}

})

},

fail:function(res) {

// fail

},

complete:function() {

// complete

}

})

}

})