支付宝小程序唤起独立签约

目录

获取签约字符串

唤起支付宝周期扣款签约页面

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支付宝小程序唤起独立签约，需要通过alipay.user.agreement.page.sign接口获取签约字符串signStr，然后调用my.paySignCenter API在支付宝小程序内唤起周期扣款签约页面。

获取签约字符串

调用接口alipay.user.agreement.page.sign获取签约字符串，所需参数如下：

公共请求参数

请求参数

const signObj = {
    app_id: '2014072300007148',
    biz_content: '{"access_params":{"channel":"ALIPAYAPP"},"external_agreement_no":"2019_06_0910","personal_product_code":"CYCLE_PAY_AUTH_P","period_rule_params":{"period_type":"DAY","period":"30","execute_time":"2021-10-29","single_amount":"10","total_amount":"600","total_payments":"12"},"sign_scene":"INDUSTRY|DIGITAL_MEDIA"}',
    charset: 'UTF-8',
    method: 'alipay.user.agreement.page.sign',
    sign_type: 'RSA2',
    timestamp: '2021-10-29 17:18:02',
    version: '1.0',    
sign:'Y+Sx4WPF4tIzTnQ+FqYds+xLBfi9wflmD+GPs2LN0qSo6431moZqM3TCouc/tEjzh3/GUFc75yHNEXVBTQ0iL+nSM4PlNgP3yPCql12c38PmChAcfj0C/1+engUkqXtCtWs0lXVKXn2ze3aHLE+64dG87h8I1ngl/2LqSAD8mhH4RmWDIrxFcxNEzlT+GJp+7Ae+OpbT284iOuZ5l5DUya47K7LVI3+/t1sXsHPGAD1d1wDQ+NfcfE+jAAw2XQ1G/EcnNkZCHlplIU1tAFTKDMPKIlOHUV1F1LkqCcH3AK5w+C0RNLcDW8SbN4q79gRGDWXX7C6FjURAjn8Tw8/Zgw=='
};
 
let signStr = '';
 
for (let key in signObj) {
    signStr += key + '=' + encodeURIComponent(signObj[key]) + '&';
}
signStr = signStr.substring(0, signStr.length - 1);
signStr = encodeURIComponent(signStr);

唤起支付宝周期扣款签约页面

调用my.paySignCenter API，使用上一步得到的signStr作为API的参数来唤起支付宝周期扣款签约页面。

my.paySignCenter({
      signStr: signStr,
      success: (res) => {
        my.alert({
          title: 'success', // alert 框的标题
          content: JSON.stringify(res)
        });
      },
      fail: (res) => {
        my.alert({
          title: 'fail', // alert 框的标题
          content: JSON.stringify(res)
        });
      }
    });