只提供微信小程序端代码

1. var app = getApp();
2. Page({
3. data: {},
4. onLoad: function (options) {
5. // 页面初始化 options为页面跳转所带来的参数
6. var that = this
7. //登陆获取code
8. wx.login({
9. success: function (res) {
10. console.log(res.code)
11. //获取openid
12. that.getOpenId(res.code)
13. }
14. });
15. },
16. getOpenId: function (code) {
17. var that = this;
18. wx.request({
19. 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",
20. data: {},
21. method: 'GET',
22. success: function (res) {
23. that.generateOrder(res.data.openid)
24. },
25. fail: function () {
26. // fail
27. },
28. complete: function () {
29. // complete
30. }
31. })
32. },
33. /**生成商户订单 */
34. generateOrder: function (openid) {
35. var that = this
36. //统一支付
37. wx.request({
38. url: '后台路径',
39. method: 'GET',
40. data: {
41. gfee: '商品价钱',
42. gname: '商品名称',
43. openId:openid
44. （商品价钱和商品名称根据自身需要是否传值,openid为必传）
45. },
46. success: function (res) {
47. var pay = res.data
48. //发起支付
49. var timeStamp = pay[0].timeStamp;
50. var packages = pay[0].package;
51. var paySign = pay[0].paySign;
52. var nonceStr = pay[0].nonceStr;
53. var param = { "timeStamp": timeStamp, "package": packages, "paySign": paySign, "signType": "MD5", "nonceStr": nonceStr };
54. that.pay(param)
55. },
56. })
57. },
58.  
59. /* 支付 */
60. pay: function (param) {
61. console.log("支付")
62. console.log(param)
63. wx.requestPayment({
64. timeStamp: param.timeStamp,
65. nonceStr: param.nonceStr,
66. package: param.package,
67. signType: param.signType,
68. paySign: param.paySign,
69. success: function (res) {
70. // success
71. wx.navigateBack({
72. delta: 1, // 回退前 delta(默认为1) 页面
73. success: function (res) {
74. wx.showToast({
75. title: '支付成功',
76. icon: 'success',
77. duration: 2000
78. })
79. },
80. fail: function () {
81. // fail
82.  
83. },
84. complete: function () {
85. // complete
86. }
87. })
88. },
89. fail: function (res) {
90. // fail
91. },
92. complete: function () {
93. // complete
94. }
95. })
96. }
97. })