IJPay-All 之微信支付之app支付

拼搏现实的明天。 2023-08-17 15:45 90阅读 0赞

### [IJPay-All文档地址][IJPay-All] ###

#### 1. maven中引入开发包 ####

<dependency>
                <groupId>com.github.javen205</groupId>
                <artifactId>IJPay-All</artifactId>
                <version>2.2.0</version>
            </dependency>

#### 2. 创建请求需要的参数类。配置信息在application中 ####

import lombok.Data;
    import org.springframework.beans.factory.annotation.Value;
    
    @Data
    public class WxPayProperties { 
        /** * 设置微信公众号或者小程序等的appid. */
        @Value("${wx.pay.appId}")
        private String appId;
    
        /** * 微信支付商户号. */
        @Value("${wx.pay.mchId}")
        private String mchId;
    
        /** * 微信支付商户密钥. */
        @Value("${wx.pay.mchKey}")
        private String mchKey;
    
        /** * 异步回调地址 */
        @Value("${wx.pay.notifyUrl}")
        private String notifyUrl;
    }

##### application配置文件 如下 #####

wx:
      pay:
        appId: wx123242342341 # appid
        mchId: 123452123 # 商户号
        mchKey: U6gG1CqAqwedrfghxH8eMuDrvfXFBokr # 秘钥 微信商户平台(pay.weixin.qq.com)-->账户设置-->API安全-->密钥设置
        notifyUrl: http://169b91h550.imwork.net:35084/wx/wxPayNotice #可以被外网访问的接口

#### 3. 创建WxPayProperties实例 ####

import org.springframework.context.annotation.Bean;
    import org.springframework.context.annotation.Configuration;
    
    @Configuration
    public class WxConfiguration { 
    
        @Bean("wxPayProperties")
        public WxPayProperties wxPayProperties(){ 
            return new WxPayProperties();
        }
    }

#### 4. 构建请求体，发起统一下单请求 注意：app支付需要二次签名，很重要 ####

// 构建请求体
    Map<String, String> params = UnifiedOrderModel
                    .builder()
                    .appid(wxPayProperties.getAppId())
                    .mch_id(wxPayProperties.getMchId())
                    .nonce_str(WxPayKit.generateStr())
                    .body("刘志强支付")
                    .out_trade_no(WxPayKit.generateStr()))
                    .total_fee("100") // 单位是分
                    .spbill_create_ip("123.123.123.123") // 终端ip
                    .notify_url(wxPayProperties.getNotifyUrl())
                    .trade_type(TradeType.APP.getTradeType())
                    .build()
                    .createSign(wxPayProperties.getMchKey(), SignType.MD5);
    // 发送请求
    String xmlResult = WxPayApi.pushOrder(false, params);
    Map<String, String> resultMap = WxPayKit.xmlToMap(xmlResult);
    // 二次签名
    Map<String, String> packageParams = new HashMap<String, String>();
    packageParams.put("appid", resultMap.get("appid"));
    packageParams.put("partnerid", wxPayProperties.getMchId());
    packageParams.put("prepayid", resultMap.get("prepay_id"));
    packageParams.put("package", "Sign=WXPay");
    packageParams.put("noncestr", resultMap.get("nonce_str"));
    packageParams.put("timestamp", System.currentTimeMillis() / 1000 + "");
    String packageSign = WxPayKit.createSign(packageParams, wxPayProperties.getMchKey(), SignType.MD5);
    packageParams.put("sign", packageSign);
    packageParams.put("return_code","SUCCESS");
    return packageParams;

#### 5. 将packageParams发送给前端用于调起支付 ####

#### 6. 创建微信异步回调接口，也是在application.yml中配置的notifyUrl ####

@PostMapping("/wx/wxPayNotice")
    public void parseOrderNotifyResult(@RequestBody String xmlData) { 
        Map<String, String> resultMap = WxPayKit.xmlToMap(xmlData);
        // 根据resultMap处理订单业务
    }

#### 7. 获取终端ip的方法 ####

private String getClientIp() { 
            String ipAddress = httpServletRequest.getRemoteAddr();
            if (ipAddress.equals("127.0.0.1") || ipAddress.equals("0:0:0:0:0:0:0:1")) { 
                //根据网卡获取本机配置的IP地址
                InetAddress inetAddress = null;
                try { 
                    inetAddress = InetAddress.getLocalHost();
                } catch (UnknownHostException e) { 
                    e.printStackTrace();
                }
                ipAddress = inetAddress.getHostAddress();
            }
            //对于通过多个代理的情况，第一个IP为客户端真实的IP地址，多个IP按照','分割
            if (null != ipAddress && ipAddress.length() > 15) { 
                if (ipAddress.indexOf(",") > 0) { 
                    ipAddress = ipAddress.substring(0, ipAddress.indexOf(","));
                }
            }
            return ipAddress != null ? ipAddress : "123.12.12.123";
        }

[IJPay-All]: https://javen205.gitee.io/ijpay/