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支付宝当面付JSAPI

标签：Web
2018-03-15

调用统一收单创建接口，整体流程是在支付宝打开调用页面后点击下单，商户后台调用统一收单创建接口，调用成功返回结果给下单页面，下单页面根据tradeNo的值执行jJSAPI吊起支付宝钱包然后付款，付款成功后商户后台的异步通知地址收到支付结果通知

支付文档

快速接入

  1. 在支付宝开放平台创建了应用APP
  2. 配置商户公钥，商户私钥自己保存
  3. 确定签名方式，建议RSA2
  4. 配置授权域名，只有授权的域名才能拿到auth_code
  5. 配置支付宝网关
  6. 签约当面付

引入依赖

<dependency>
  <groupId>com.alipay.sdk</groupId>
  <artifactId>alipay-sdk-java</artifactId>
  <version>3.3.4.ALL</version>
</dependency>

配置AlipayClient

public class AliConfig {
    public static final String app_id = "创建的APPID";
    public static final String your_private_key = "商户私钥";
    public static final String alipay_public_key = "支付宝公钥";
    //编码格式
    public static final String CHARSET = "utf-8";
    public static final String format = "json";
    //签名方式
    public static final String sign_type = "RSA2";
    //请求网关地址，当前配置的是沙箱环境的网关，正式环境网关填写https://openapi.alipay.com/gateway.do
    public static final String url="https://openapi.alipaydev.com/gateway.do";
    //第三方授权的token值
    public static final String  APP_AUTH_TOKEN ="201805BBfbd5b3be0c554f98b7bbe641ed676E68";
    
    public static AlipayClient alipayclient() {
        AlipayClient alipayClient = new DefaultAlipayClient(url, app_id,your_private_key, format, CHARSET, alipay_public_key, sign_type);
        return alipayClient;
    }

}

配置发起支付工具类，请求成功返回支付宝流水号

public static String requestAliCreatePayApi(AlipayObject bizModel, String authToken) throws AlipayApiException {
        AlipayTradeCreateRequest request = new AlipayTradeCreateRequest();
        request.setNotifyUrl("回调地址");
        request.setBizModel(bizModel)；
        if(authToken != null){//第三方授权token，用于isv服务商代发起支付
            request.putOtherTextParam("app_auth_token", authToken);
        }
        AlipayTradeCreateResponse response;
        response = AliConfig.alipayclient().execute(request);
        System.out.println("支付宝流水号：" + response.getTradeNo());
        return response.getTradeNo();
    }

后台静态授权，重定向到支付宝，获取auth_code,沙箱环境为alipaydev，线上环境为alipay

response.sendRedirect("https://openauth.alipaydev.com/oauth2/publicAppAuthorize.htm?app_id=" +
 AliConfig.app_id+ "&redirect_uri=http://qif.tunnel.qydev.com/parking/result.do&scope=auth_base");

根据auth_code获取支付宝用户ID,前提是支付宝访问过来的才能拿到auth_code，而且只有在创建的APP中配置授权域名，支付宝才能访问该域名下的地址

public static String getAliPayUserId(String authCode) throws AlipayApiException {
        AlipaySystemOauthTokenRequest request = new AlipaySystemOauthTokenRequest();
        request.setCode(authCode);
        request.setGrantType("authorization_code");
        AlipaySystemOauthTokenResponse oauthTokenResponse = AliConfig.alipayclient().execute(request);
        return oauthTokenResponse.getUserId();
    }

前端页面异步请求发起支付

$("#toPay").click(function () {
    $.ajax({
        type:'post',
        url:"/parking/toPay.do",
        data:{userId:$("#userId").val()},
        success:function(data){
            AlipayJSBridge.call("tradePay",{
                "tradeNO": data
            }, function(result){
                if(result.resultCode == '9000'){
                    window.location.href = "/result.jsp";
                }else{
                    alert(result.resultCode);
                }
            });
        },
        error : function() {
            alert("请求异常！");
        }
    });
});

后台封装业务，发起支付

@RequestMapping("/toPay.do")
@ResponseBody
public String toPay(HttpServletResponse response,String userId) throws IOException, AlipayApiException {
    String authToken = null;
    AlipayTradeCreateModel payInfo = new AlipayTradeCreateModel();
    payInfo.setBody("沙箱测试");
    payInfo.setSubject("沙箱测试");
    payInfo.setTimeoutExpress("5m");
    payInfo.setTotalAmount("50");
    payInfo.setBuyerId(userId);
    payInfo.setOutTradeNo("20180205000001");
    String orderNo = AliUtil.requestAliCreatePayApi(payInfo,authToken);
    return orderNo;
}

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