spring——微信开发

摘要：网页授权登陆申请公众号测试号也行申请测试号链接申请后得到和配置需要可以外网访问的域名，没有的话可以搞个内网穿透开发使用第三方的进行开发，避免重复造轮子，微信的开发文档如下第三方流程构造链接，获取到，拿到配置接口调用跳转到授权链接跳转链接配置

申请测试号链接

申请后得到appID和appsecret
配置：

需要可以外网访问的域名，没有的话可以搞个内网穿透

使用第三方的SDK进行开发，避免重复造轮子，微信的开发文档如下：

第三方SDK
流程：构造链接，获取到AccessToken，拿到openId

配置WxMpServiceImpl

@Component
public class WechatMpConfig {
    @Autowired
    private WechatAccountConfig wechatAccountConfig;

    @Bean
    public WxMpService wxMpService() {
        WxMpService wxMpService = new WxMpServiceImpl();
        wxMpService.setWxMpConfigStorage(wxMpConfigStorage());
        return wxMpService;
    }

    @Bean
    public WxMpConfigStorage wxMpConfigStorage() {
        WxMpInMemoryConfigStorage wxMpConfigStorage = new WxMpInMemoryConfigStorage();
        wxMpConfigStorage.setAppId(wechatAccountConfig.getMpAppId());
        wxMpConfigStorage.setSecret(wechatAccountConfig.getMpAppSecret());
        return wxMpConfigStorage;
    }
}

接口调用

    //跳转到授权链接
     @GetMapping("/authorize")
        public String authorize( @ApiParam(name = "returnUrl", value = "跳转链接")@RequestParam("returnUrl") String returnUrl) {
            //1. 配置
            //2. 调用方法
            String url = projectUrlConfig.getWechatMpAuthorize() + "/wechat/userInfo";
            String redirectUrl = wxMpService.oauth2buildAuthorizationUrl(url, WxConsts.OAuth2Scope.SNSAPI_BASE, URLEncoder.encode(returnUrl));
            return "redirect:" + redirectUrl;
    }
    //确定授权后的处理方法
    @GetMapping("/userInfo")
    public String userInfo(@ApiParam(name = "code", value = "code")@RequestParam("returnUrl") String code,
                           @ApiParam(name = "returnUrl", value = "跳转链接")@RequestParam("returnUrl") String returnUrl ){
        WxMpOAuth2AccessToken wxMpOAuth2AccessToken = new WxMpOAuth2AccessToken();
        try {
            wxMpOAuth2AccessToken = wxMpService.oauth2getAccessToken(code);
        } catch (WxErrorException e) {
            log.error("[微信页面授权失败]{}",e);
            throw new SellException(ResultEnum.WECHAT_MP_ERROR.getCode(),e.getError().getErrorMsg());
        }
        String openId = wxMpOAuth2AccessToken.getOpenId();

        return "redirect:" + returnUrl + "openId = " + openId;
    }

微信开放平台，需要自己去申请一个应用，审核通过后得到

生成二维码，拿到openId
第三方SDK

配置WxMpServiceImpl

@Component
public class WechatOpenConfig {
    @Autowired
    private WechatAccountConfig accountConfig;

    @Bean
    public WxMpService wxOpenService() {
        WxMpService wxOpenService = new WxMpServiceImpl();
        wxOpenService.setWxMpConfigStorage(wxOpenConfigStorage());
        return wxOpenService;
    }

    @Bean
    public WxMpConfigStorage wxOpenConfigStorage() {
        WxMpInMemoryConfigStorage wxMpInMemoryConfigStorage = new WxMpInMemoryConfigStorage();
        wxMpInMemoryConfigStorage.setAppId(accountConfig.getOpenAppId());
        wxMpInMemoryConfigStorage.setSecret(accountConfig.getOpenAppSecret());
        return wxMpInMemoryConfigStorage;
    }

2. 接口调用

    //跳转二维码页面，生成二维码
    @GetMapping("/qrAuthorize")
    public String qrAuthorize(@RequestParam("returnUrl") String returnUrl) {
        String url = projectUrlConfig.getWechatOpenAuthorize() + "/sell/wechat/qrUserInfo";
        String redirectUrl = wxOpenService.buildQrConnectUrl(url, WxConsts.QrConnectScope.SNSAPI_LOGIN, URLEncoder.encode(returnUrl));
        return "redirect:" + redirectUrl;
    }

    //扫码后逻辑登陆
    @GetMapping("/qrUserInfo")
    public String qrUserInfo(@RequestParam("code") String code,
                             @RequestParam("state") String returnUrl) {
        WxMpOAuth2AccessToken wxMpOAuth2AccessToken = new WxMpOAuth2AccessToken();
        try {
            wxMpOAuth2AccessToken = wxOpenService.oauth2getAccessToken(code);
        } catch (WxErrorException e) {
            log.error("【微信网页授权】{}", e);
            throw new SellException(ResultEnum.WECHAT_MP_ERROR.getCode(), e.getError().getErrorMsg());
        }
        log.info("wxMpOAuth2AccessToken={}", wxMpOAuth2AccessToken);
        String openId = wxMpOAuth2AccessToken.getOpenId();

        return "redirect:" + returnUrl + "?openid=" + openId;
    }
```

微信支付SDK，这个SDK是上方的SDK对支付的进一步封装
微信支付官方开发文档
需要申请一个具有商家资质的账号，等到mchId和mchKey

配置BestPayServiceImpl

@Component
public class WechatPayConfig {

    @Autowired
    private WechatAccountConfig wechatAccountConfig;

    @Bean
    public BestPayServiceImpl bestPayService(){
        BestPayServiceImpl bestPayService = new BestPayServiceImpl();
        bestPayService.setWxPayH5Config(wxPayH5Config());
        return bestPayService;
    }

    @Bean
    public WxPayH5Config wxPayH5Config(){
        WxPayH5Config wxPayH5Config = new WxPayH5Config();
        wxPayH5Config.setAppId(wechatAccountConfig.getMpAppId());
        wxPayH5Config.setAppSecret(wechatAccountConfig.getMpAppSecret());
        wxPayH5Config.setMchId(wechatAccountConfig.getMchId());
        wxPayH5Config.setMchKey(wechatAccountConfig.getMchKey());
        wxPayH5Config.setKeyPath(wechatAccountConfig.getKeyPath());
        wxPayH5Config.setNotifyUrl(wechatAccountConfig.getNotifyUrl());
        return wxPayH5Config;
    }
}

编写Service

@Service
@Slf4j
public class PayServiceImpl implements PayService {

    private static final String ORDER_NAME = "微信点餐订单";

    @Autowired
    private BestPayServiceImpl bestPayService;

    @Autowired
    private OrderService orderService;

    //发起支付
    @Override
    public PayResponse create(OrderDTO orderDTO) {
        PayRequest payRequest = new PayRequest();
        payRequest.setOpenid(orderDTO.getBuyerOpenid());
        payRequest.setOrderAmount(orderDTO.getOrderAmount().doubleValue());
        payRequest.setOrderId(orderDTO.getOrderId());
        payRequest.setOrderName(ORDER_NAME);
        payRequest.setPayTypeEnum(BestPayTypeEnum.WXPAY_H5);
        log.info("【微信支付】发起支付, request={}", JsonUtil.toJson(payRequest));

        PayResponse payResponse = bestPayService.pay(payRequest);
        log.info("【微信支付】发起支付, response={}", JsonUtil.toJson(payResponse));
        return payResponse;
    }

    //支付后微信异步通知，告之微信支付结果
    @Override
    public PayResponse notify(String notifyData) {
        PayResponse payResponse = bestPayService.asyncNotify(notifyData);
        log.info("【微信支付】异步通知, payResponse={}", JsonUtil.toJson(payResponse));

        //查询订单
        OrderDTO orderDTO = orderService.findOne(payResponse.getOrderId());
        //判断订单是否存在
        if (orderDTO == null) {
            log.error("【微信支付】异步通知, 订单不存在, orderId={}", payResponse.getOrderId());
            throw new SellException(ResultEnum.ORDER_NOT_EXIST);
        }

        //判断金额是否一致(0.10   0.1)
        if (!MathUtil.equals(payResponse.getOrderAmount(), orderDTO.getOrderAmount().doubleValue())) {
            log.error("【微信支付】异步通知, 订单金额不一致, orderId={}, 微信通知金额={}, 系统金额={}",
                    payResponse.getOrderId(),
                    payResponse.getOrderAmount(),
                    orderDTO.getOrderAmount());
            throw new SellException(ResultEnum.WXPAY_NOTIFY_MONEY_VERIFY_ERROR);
        }

        //修改订单的支付状态
        orderService.paid(orderDTO);
        return payResponse;
    }

    //退款
    @Override
    public RefundResponse refund(OrderDTO orderDTO) {
        RefundRequest refundRequest = new RefundRequest();
        refundRequest.setOrderId(orderDTO.getOrderId());
        refundRequest.setOrderAmount(orderDTO.getOrderAmount().doubleValue());
        refundRequest.setPayTypeEnum(BestPayTypeEnum.WXPAY_H5);
        log.info("【微信退款】request={}", JsonUtil.toJson(refundRequest));
        RefundResponse refundResponse = bestPayService.refund(refundRequest);
        return refundResponse;
    }
}

在公众号管理设置好消息模版
编写service

   @Override
    public void orderStatus(OrderDTO orderDTO) {
        WxMpTemplateMessage templateMessage = new WxMpTemplateMessage();
        templateMessage.setTemplateId(wechatAccountConfig.getTemplateId().get("orderStatus"));
        templateMessage.setToUser(orderDTO.getBuyerOpenid());
        List data = Arrays.asList(
                new WxMpTemplateData("first","111"),
                new WxMpTemplateData("keyword1", "微信点餐"),
                new WxMpTemplateData("keyword2", "18868812345"),
                new WxMpTemplateData("keyword3", orderDTO.getOrderId()),
                new WxMpTemplateData("keyword4", orderDTO.getOrderStatusEnum().getMessage()),
                new WxMpTemplateData("keyword5", "￥" + orderDTO.getOrderAmount()),
                new WxMpTemplateData("remark", "欢迎再次光临！")
        );
        try{
            wxMpService.getTemplateMsgService().sendTemplateMsg(templateMessage);
        }catch (WxErrorException e){
            log.error("【微信模版消息】发送失败");
        }
    }
}