支付宝沙箱支付前端vue代码

以下是一个简单的支付宝沙箱支付前端 Vue 代码示例：

<template>
  <div>
    <h1>支付宝沙箱支付</h1>
    <form @submit.prevent="submitForm">
      <label>订单号：</label>
      <input type="text" v-model="orderNumber" /><br /><br />
      <label>订单金额：</label>
      <input type="text" v-model="orderAmount" /><br /><br />
      <button type="submit">提交订单</button>
    </form>
  </div>
</template>

<script>
export default {
  data() {
    return {
      orderNumber: "",
      orderAmount: "",
    };
  },
  methods: {
    submitForm() {
      // 创建支付宝表单
      const form = document.createElement("form");
      form.action = "https://openapi.alipaydev.com/gateway.do";
      form.method = "POST";
      form.target = "_blank";
      form.style.display = "none";

      // 添加参数
      const input1 = document.createElement("input");
      input1.type = "hidden";
      input1.name = "app_id";
      input1.value = "沙箱环境中的APP_ID";
      form.appendChild(input1);

      const input2 = document.createElement("input");
      input2.type = "hidden";
      input2.name = "method";
      input2.value = "alipay.trade.page.pay";
      form.appendChild(input2);

      const input3 = document.createElement("input");
      input3.type = "hidden";
      input3.name = "charset";
      input3.value = "utf-8";
      form.appendChild(input3);

      const input4 = document.createElement("input");
      input4.type = "hidden";
      input4.name = "sign_type";
      input4.value = "RSA2";
      form.appendChild(input4);

      const input5 = document.createElement("input");
      input5.type = "hidden";
      input5.name = "timestamp";
      input5.value = "{{timestamp}}";
      form.appendChild(input5);

      const input6 = document.createElement("input");
      input6.type = "hidden";
      input6.name = "version";
      input6.value = "1.0";
      form.appendChild(input6);

      const input7 = document.createElement("input");
      input7.type = "hidden";
      input7.name = "notify_url";
      input7.value = "回调地址";
      form.appendChild(input7);

      const input8 = document.createElement("input");
      input8.type = "hidden";
      input8.name = "biz_content";
      input8.value = `{
        "out_trade_no": "${this.orderNumber}",
        "product_code": "FAST_INSTANT_TRADE_PAY",
        "total_amount": "${this.orderAmount}",
        "subject": "测试订单",
        "body": "测试订单描述"
      }`;
      form.appendChild(input8);

      const input9 = document.createElement("input");
      input9.type = "hidden";
      input9.name = "sign";
      input9.value = "{{签名}}";
      form.appendChild(input9);

      document.body.appendChild(form);
      form.submit();
      document.body.removeChild(form);
    },
  },
};
</script>

这里使用了原生 JavaScript 来创建支付宝表单，需要注意的是，其中的 `app_id` 和 `notify_url` 需要根据你沙箱环境中的实际情况进行替换。此外，还需要使用正确的签名算法生成签名，并将签名填入 `sign` 字段中。

完整的支付宝沙箱支付前端代码示例可以参考支付宝官方文档：[https://opendocs.alipay.com/open/200/105311](https://opendocs.alipay.com/open/200/105311)。