Spring Boot中实现支付宝、微信和银联支付的功能-编程知识

Spring Boot中实现支付宝、微信和银联支付的功能

在Spring Boot中实现支付宝、微信和银联支付的功能，通常需要使用它们各自的SDK（Software Development Kit）。以下是一个简单的示例代码，演示了如何在Spring Boot项目中集成支付宝、微信和银联支付功能。请注意，这只是一个基本的示例，实际上，支付集成涉及更多的配置和安全考虑。

1. 集成支付宝支付

首先，你需要添加支付宝SDK的依赖。在pom.xml中添加以下依赖：

<dependency><groupId>com.alipay.sdk</groupId><artifactId>alipay-sdk-java</artifactId><version>3.10.0.ALL</version>
</dependency>

然后，创建一个Controller类，处理支付宝支付请求：

import com.alipay.api.AlipayApiException;
import com.alipay.api.AlipayClient;
import com.alipay.api.DefaultAlipayClient;
import com.alipay.api.request.AlipayTradePagePayRequest;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;@Controller
@RequestMapping("/alipay")
public class AlipayController {@Value("${alipay.appId}")private String appId;@Value("${alipay.privateKey}")private String privateKey;@Value("${alipay.publicKey}")private String publicKey;@RequestMapping(value = "/pay", method = RequestMethod.POST)@ResponseBodypublic String alipay(@RequestParam("outTradeNo") String outTradeNo,@RequestParam("totalAmount") String totalAmount,@RequestParam("subject") String subject) throws AlipayApiException {AlipayClient alipayClient = new DefaultAlipayClient("https://openapi.alipay.com/gateway.do", appId, privateKey, "json", "utf-8", publicKey, "RSA2");AlipayTradePagePayRequest alipayRequest = new AlipayTradePagePayRequest();alipayRequest.setReturnUrl("回调地址");alipayRequest.setNotifyUrl("异步通知地址");alipayRequest.setBizContent("{\"out_trade_no\":\"" + outTradeNo + "\","+ "\"total_amount\":\"" + totalAmount + "\","+ "\"subject\":\"" + subject + "\","+ "\"product_code\":\"FAST_INSTANT_TRADE_PAY\"}");return alipayClient.pageExecute(alipayRequest).getBody();}
}

在application.properties中添加支付宝相关的配置：

alipay.appId=your_app_id
alipay.privateKey=your_private_key
alipay.publicKey=your_public_key

2. 集成微信支付

首先，你需要添加微信支付SDK的依赖。在pom.xml中添加以下依赖：

<dependency><groupId>com.github.wxpay</groupId><artifactId>wxpay-sdk</artifactId><version>0.0.3</version>
</dependency>

然后，创建一个Controller类，处理微信支付请求：

import com.github.wxpay.sdk.WXPay;
import com.github.wxpay.sdk.WXPayConfigImpl;
import com.github.wxpay.sdk.WXPayConstants;
import com.github.wxpay.sdk.WXPayUtil;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;import java.util.HashMap;
import java.util.Map;@Controller
@RequestMapping("/wechat")
public class WechatController {@Value("${wechat.appId}")private String appId;@Value("${wechat.mchId}")private String mchId;@Value("${wechat.key}")private String key;@RequestMapping(value = "/pay", method = RequestMethod.POST)@ResponseBodypublic Map<String, String> wechatPay(@RequestParam("outTradeNo") String outTradeNo,@RequestParam("totalFee") String totalFee,@RequestParam("body") String body,@RequestParam("spbillCreateIp") String spbillCreateIp) throws Exception {WXPayConfigImpl config = new WXPayConfigImpl();config.setAppID(appId);config.setMchID(mchId);config.setKey(key);WXPay wxPay = new WXPay(config, WXPayConstants.SignType.MD5);Map<String, String> data = new HashMap<>();data.put("body", body);data.put("out_trade_no", outTradeNo);data.put("total_fee", totalFee);data.put("spbill_create_ip", spbillCreateIp);data.put("trade_type", "NATIVE");data.put("notify_url", "异步通知地址");Map<String, String> result = wxPay.unifiedOrder(data);if ("SUCCESS".equals(result.get("return_code")) && "SUCCESS".equals(result.get("result_code"))) {String codeUrl = result.get("code_url");// 返回给前端，用于生成支付二维码Map<String, String> response = new HashMap<>();response.put("codeUrl", codeUrl);return response;} else {// 处理支付失败的逻辑throw new Exception("微信支付失败：" + result.get("return_msg"));}}
}

在application.properties中添加微信相关的配置：

wechat.appId=your_app_id
wechat.mchId=your_mch_id
wechat.key=your_key

3. 集成银联支付

首先，你需要添加银联支付SDK的依赖。在pom.xml中添加以下依赖：

<dependency><groupId>cn.joylau.commons</groupId><artifactId>unionpay-common</artifactId><version>1.0.0</version>
</dependency>

然后，创建一个Controller类，处理银联支付请求：

import cn.joylau.commons.unionpay.acp.sdk.AcpService;
import cn.joylau.commons.unionpay.acp.sdk.LogUtil;
import cn.joylau.commons.unionpay.acp.sdk.SDKConfig;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.RequestParam;
import org.springframework.web.bind.annotation.ResponseBody;import java.util.HashMap;
import java.util.Map;@Controller
@RequestMapping("/unionpay")
public class UnionpayController {@RequestMapping(value = "/pay", method = RequestMethod.POST)@ResponseBodypublic String unionpay(@RequestParam("orderId") String orderId,@RequestParam("txnAmt") String txnAmt) {Map<String, String> requestData = new HashMap<>();// 银联分配的商户号requestData.put("merId", "your_mer_id");// 订单号，8-40位数字字母requestData.put("orderId", orderId);// 交易金额，单位分requestData.put("txnAmt", txnAmt);// 前台交易请求地址requestData.put("frontUrl", "前台回调地址");// 后台交易请求地址requestData.put("backUrl", "后台回调地址");// 其他参数...Map<String, String> responseData = AcpService.post(requestData, "https://gateway.95516.com/gateway/api/frontTransReq.do", "UTF-8");if (!AcpService.validate(responseData, "UTF-8")) {// 验证签名失败LogUtil.writeLog("验证签名失败");// 处理支付失败的逻辑return "验证签名失败";}String respCode = responseData.get("respCode");if ("00".equals(respCode)) {// 支付成功，处理业务逻辑return "支付成功";} else {// 支付失败，处理业务逻辑return "支付失败：" + responseData.get("respMsg");}}
}

在application.properties中添加银联相关的配置：

# 银联商户号
acpsdk.merId=your_mer_id
# 银联签名私钥
acpsdk.signCert.path=/path/to/your_sign_cert.pfx
# 银联签名私钥密码
acpsdk.signCert.pwd=your_sign_cert_password
# 银联验签公钥
acpsdk.validateCert.dir=/path/to/your_validate_cert_dir
# 银联对账文件下载地址
acpsdk.fileTransUrl=https://filedownload.95516.com/

以上代码仅为示例，实际情况中需要根据具体需求进行适当调整。请确保在生产环境中采取必要的安全措施，如使用HTTPS、加密敏感信息等。

示例中完整代码，可以从下面网址获取：

https://gitee.com/jlearning/wechatdemo.git

https://github.com/icoderoad/wxdemo.git