Java实现微信支付

红太狼 2023-10-14 03:59 38阅读 0赞

## 1.引入依赖 ##

<dependency>
      <groupId>com.github.wechatpay-apiv3</groupId>
      <artifactId>wechatpay-java</artifactId>
      <version>0.2.10</version>
    </dependency>

## 2.创建预支付订单 ##

import com.wechat.pay.java.core.Config;
    import com.wechat.pay.java.core.RSAConfig;
    import com.wechat.pay.java.service.payments.jsapi.JsapiService;
    import com.wechat.pay.java.service.payments.jsapi.model.Amount;
    import com.wechat.pay.java.service.payments.jsapi.model.Payer;
    import com.wechat.pay.java.service.payments.jsapi.model.PrepayRequest;
    import com.wechat.pay.java.service.payments.jsapi.model.PrepayResponse;
    import org.springframework.beans.factory.annotation.Value;
    import org.springframework.stereotype.Component;
    
    @Component
    public class WeiXinPay {
        
        //@Value("${weixin.appId}")
        private String weixinAppId;
    
        /** 商户号 */
        public static String merchantId = "";
        /** 商户API私钥路径 */
        public static String privateKeyPath = "";
        /** 商户证书序列号 例如-证书序列号：54776TTTF8F77EXXX3641FAB5F940FII11C65347*/
        public static String merchantSerialNumber = "";
        /** 微信支付平台证书路径 例如：wechatpay_3A4AF69999DF01F39BB08C21C1C29B6AA17C074N.pem*/
        public static String wechatPayCertificatePath = "";
        /** 微信支付 APIv3 密钥 */
        public static String apiV3Key = "";
    
        public String createPreparePay() {
        
            Config config =
                    new RSAConfig.Builder()
                            //商户ID
                            .merchantId(merchantId)
                            //商户私钥文件(apiclient_key.pem)路径
                            .privateKeyFromPath(privateKeyPath)
                            //商户证书序列号 例如-证书序列号：54776TTTF8F77EXXX3641FAB5F940FII11C65347
                            .merchantSerialNumber(merchantSerialNumber)
                            //微信支付平台证书文件路径 例如：wechatpay_3A4AF69999DF01F39BB08C21C1C29B6AA17C074N.pem
                            .wechatPayCertificatesFromPath(wechatPayCertificatePath)
                            .build();
    
            JsapiService service = new JsapiService.Builder().config(config).build();
    
            PrepayRequest request = new PrepayRequest();
            Amount amount = new Amount();
            amount.setTotal(100);
            request.setAmount(amount);
            request.setAppid("wxa9d9651ae******");
            request.setMchid("190000****");
            request.setDescription("测试商品标题");
            request.setNotifyUrl("https://notify_url");
            request.setOutTradeNo("out_trade_no_001");
            Payer payer = new Payer();
            payer.setOpenid("oLTPCuN5a-nBD4rAL_fa********");
            request.setPayer(payer);
    
            PrepayResponse response = service.prepay(request);
            System.out.println(response.getPrepayId());
            return "";
        }
    }