Java网站如何集成支付宝当面付，企业个人都能使用的支付（比较简单）

news2024/11/8 12:02:35

创建应用

这个得先去登录 - 支付宝创建应用

maven配置

 <dependency>
            <groupId>com.alipay.sdk</groupId>
            <artifactId>alipay-sdk-java</artifactId>
            <version>4.38.10.ALL</version>
        </dependency>

支付服务代码

/**
 * 支付宝支付
 * @author leell
 * @date 2023/7/21 16:39:58
 */
public interface AliPayService {
    /**
     * 预下单
     * @return 返回二维码链接
     */
    String createPrecreateTrade(AliPrecreateParam param) throws RuntimeException;

    /**
     * 检查支付状态
     * @param orderNo 订单号
     * @return 支付状态 true：已支付 false：未支付
     */
    boolean checkAlipayStatus(String orderNo) throws RuntimeException;

    /**
     * 取消支付
     * @param orderNo 订单号
     * @return 取消状态
     */
    boolean cancelPay(String orderNo) throws RuntimeException;
    /**
     * 退款
     * @param orderNo 订单号
     * @return 取消状态
     */
    boolean refundPay(String orderNo, BigDecimal money) throws RuntimeException;

    /**
     * 验证签名
     * @param params 参数
     * @return 状态
     */
    boolean rsaCheckV1(Map<String,String> params) throws RuntimeException;

    /**
     * 检查回调支付状态
     * @param params 参数
     * @return 状态
     * @throws RuntimeException 异常
     */
    boolean checkNotifyPayStatus(Map<String,String> params) throws RuntimeException;

    /**
     * 获取订单号
     * @param params 支付宝返回参数
     * @return 订单号
     */
    String getOrderNo(Map<String,String> params);
}

/**
 * 支付宝支付
 *
 * @author leell
 * @date 2023/7/21 16:46:16
 */
@Service
public class AliPayServiceImpl implements AliPayService {
    @Autowired
    private PayHelper payHelper;
    @Autowired
    private ConfigService configService;

    @Override
    public String createPrecreateTrade(AliPrecreateParam param) throws RuntimeException {
        try {
            AlipayClient alipayClient = payHelper.getAlipayClient();
            AlipayTradePrecreateRequest request = new AlipayTradePrecreateRequest();
            //异步接收地址，仅支持http/https，公网可访问
            request.setNotifyUrl(param.getNotifyUrl());

            JSONObject bizContent = new JSONObject();
            bizContent.put("out_trade_no", param.getOutTradeNo());
            bizContent.put("total_amount", param.getTotalAmount());
            bizContent.put("subject", param.getSubject());
            request.setBizContent(bizContent.toString());
            AlipayTradePrecreateResponse response = alipayClient.execute(request);
            AssertUtil.isTrue(response.isSuccess(), response.getMsg());
            return response.getQrCode();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    public boolean checkAlipayStatus(String orderNo) throws RuntimeException {
        try {
            AlipayClient alipayClient = payHelper.getAlipayClient();
            AlipayTradeQueryRequest request = new AlipayTradeQueryRequest();
            JSONObject bizContent = new JSONObject();
            bizContent.put("out_trade_no", orderNo);
            bizContent.put("query_options", new String[]{"trade_settle_info"});
            request.setBizContent(bizContent.toString());
            AlipayTradeQueryResponse response = alipayClient.execute(request);
            JSONObject tradeResponse = JSONObject.parseObject(response.getBody()).getJSONObject("alipay_trade_query_response");
            String result = tradeResponse.getString("trade_status");
            return "TRADE_SUCCESS".equals(result);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    public boolean cancelPay(String orderNo) throws RuntimeException {
        try {
            AlipayClient alipayClient = payHelper.getAlipayClient();
            AlipayTradeCancelRequest request = new AlipayTradeCancelRequest();
            JSONObject bizContent = new JSONObject();
            bizContent.put("out_trade_no", orderNo);
            request.setBizContent(bizContent.toString());
            AlipayTradeCancelResponse response = alipayClient.execute(request);
            return response.isSuccess();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    public boolean refundPay(String orderNo, BigDecimal money) throws RuntimeException {
        try {
            AlipayClient alipayClient = payHelper.getAlipayClient();
            AlipayTradeRefundRequest request = new AlipayTradeRefundRequest();
            JSONObject bizContent = new JSONObject();
            bizContent.put("refund_amount", money);
            bizContent.put("out_trade_no", orderNo);
            request.setBizContent(bizContent.toString());
            AlipayTradeRefundResponse response = alipayClient.execute(request);
            return response.isSuccess();
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    public boolean rsaCheckV1(Map<String, String> params) throws RuntimeException {
        try {
            String alipayPublicKey = configService.getValue("pay_alipay_public_key");
            String charset = configService.getValue("pay_alipay_charset");
            String signType = configService.getValue("pay_alipay_signType");

            return AlipaySignature.rsaCheckV1(params, alipayPublicKey, charset, signType);
        } catch (Exception e) {
            throw new RuntimeException(e);
        }
    }

    @Override
    public boolean checkNotifyPayStatus(Map<String, String> params) throws RuntimeException {
        // 取得支付宝POST过来的异步通知参数，进行验签
        // 注意：调用SDK验证签名需要使用支付宝公钥，不要使用自己生成的RSA公私钥对
        boolean verifyResult = this.rsaCheckV1(params);
        if (verifyResult) {
            // 验签通过
            String tradeStatus = params.get("trade_status");
            return "TRADE_SUCCESS".equals(tradeStatus) || "TRADE_FINISHED".equals(tradeStatus);
        }
        return false;
    }

    @Override
    public String getOrderNo(Map<String, String> params) {
        // 处理交易成功的逻辑
        return params.get("out_trade_no");
    }
}