SpringBoot对接微信公众号，持续更新

作者不是大牛，有问题请指出

一、创建SpringBoot项目，配置内网穿透

1. 创建一个SpringBoot项目，此步骤省略

2. 在pom中引用班纳睿工具包

        班纳睿

<!-- 公众号 -->
<dependency>
  <groupId>com.github.binarywang</groupId>
  <artifactId>wx-java-mp-spring-boot-starter</artifactId>
  <version>4.1.0</version>
</dependency>

3. 内网穿透配置

我这边用到的是 ngrok

在ngrok中选择免费的项目，然后配置相对应的域名映射到本地的相应端口

配置完后，在隧道管理菜单可以看到隧道 id

下载ngrok的客户端，我这里下载的是 windows版本，下载解压后，打开 windows_amd64文件夹，点击Sunny-Ngrok启动工具，然后输入隧道id敲回车。界面出现oline表示穿透成功。

 

二、 在微信公众平台申请测试公众号，对接SpringBoot项目

1. 在微信公众平台申请开发测试公众号

        申请测试号后，可以得到appID，appsecret

2. 配置SpringBoot中对应的公众号信息

      在SpringBoot项目的application.yml中配置公众号相应的信息，将appId和secret 配置成公众号界面分配的信息，token自己在公众号界面填写一个，然后对应的配置在yml文件中。

   

 在SpringBoot项目中创建config文件夹

 在 config文件夹下创建 WechatMpProperties类，获取yml文件中的配置信息

@Configuration
@ConfigurationProperties(prefix = "wechat.mp")
@Data
public class WechatMpProperties {
    /**
     * 设置微信公众号的appid
     */
    private String appId;
 
    /**
     * 设置微信公众号的app secret
     */
    private String secret;
 
    /**
     * 设置微信公众号的token
     */
    private String token;
 
    /**
     * 设置微信公众号的EncodingAESKey
     */
    private String aesKey;
}

 在 config文件下创建 WxMpConfiguration类，将 WechatMpProperties的配置信息配置进去

@AllArgsConstructor
@Configuration
public class WxMpConfiguration {
 
    @Autowired
    private WechatMpProperties properties;
 
    @Bean
    public WxMpService wxMpService() {
        WxMpService service = new WxMpServiceImpl();
        WxMpDefaultConfigImpl configStorage = new WxMpDefaultConfigImpl();
        configStorage.setAppId(properties.getAppId());
        configStorage.setSecret(properties.getSecret());
        configStorage.setToken(properties.getToken());
        configStorage.setAesKey(properties.getAesKey());
        Map<String, WxMpConfigStorage> storageMap = new HashMap<>();
        storageMap.put(properties.getAppId(), configStorage);
        service.setMultiConfigStorages(storageMap);
        return service;
    }
 
}

 在 SpringBoot项目中创建 controller文件夹，在 controller文件夹下创建 WxPortalController类

@Slf4j
@AllArgsConstructor
@RestController
@RequestMapping("/wx/portal/{appid}")
public class WxPortalController {
    private final WxMpService wxService;
    private final WxMpMessageRouter messageRouter;
 
    @GetMapping(produces = "text/plain;charset=utf-8")
    public String authGet(@PathVariable String appid,
                          @RequestParam(name = "signature", required = false) String signature,
                          @RequestParam(name = "timestamp", required = false) String timestamp,
                          @RequestParam(name = "nonce", required = false) String nonce,
                          @RequestParam(name = "echostr", required = false) String echostr) {
 
        log.info("\n接收到来自微信服务器的认证消息：[{}, {}, {}, {}]", signature,
            timestamp, nonce, echostr);
        if (StringUtils.isAnyBlank(signature, timestamp, nonce, echostr)) {
            throw new IllegalArgumentException("请求参数非法，请核实!");
        }
 
        if (!this.wxService.switchover(appid)) {
            throw new IllegalArgumentException(String.format("未找到对应appid=[%s]的配置，请核实！", appid));
        }
 
        if (wxService.checkSignature(timestamp, nonce, signature)) {
            return echostr;
        }
 
        return "非法请求";
    }
 
    @PostMapping(produces = "application/xml; charset=UTF-8")
    public String post(@PathVariable String appid,
                       @RequestBody String requestBody,
                       @RequestParam("signature") String signature,
                       @RequestParam("timestamp") String timestamp,
                       @RequestParam("nonce") String nonce,
                       @RequestParam("openid") String openid,
                       @RequestParam(name = "encrypt_type", required = false) String encType,
                       @RequestParam(name = "msg_signature", required = false) String msgSignature) {
        log.info("\n接收微信请求：[openid=[{}], [signature=[{}], encType=[{}], msgSignature=[{}],"
                + " timestamp=[{}], nonce=[{}], requestBody=[\n{}\n] ",
            openid, signature, encType, msgSignature, timestamp, nonce, requestBody);
 
        if (!this.wxService.switchover(appid)) {
            throw new IllegalArgumentException(String.format("未找到对应appid=[%s]的配置，请核实！", appid));
        }
 
        if (!wxService.checkSignature(timestamp, nonce, signature)) {
            throw new IllegalArgumentException("非法请求，可能属于伪造的请求！");
        }
 
        String out = null;
        if (encType == null) {
            // 明文传输的消息
            WxMpXmlMessage inMessage = WxMpXmlMessage.fromXml(requestBody);
            WxMpXmlOutMessage outMessage = this.route(inMessage);
            if (outMessage == null) {
                return "";
            }
 
            out = outMessage.toXml();
        } else if ("aes".equalsIgnoreCase(encType)) {
            // aes加密的消息
            WxMpXmlMessage inMessage = WxMpXmlMessage.fromEncryptedXml(requestBody, wxService.getWxMpConfigStorage(),
                timestamp, nonce, msgSignature);
            log.debug("\n消息解密后内容为：\n{} ", inMessage.toString());
            WxMpXmlOutMessage outMessage = this.route(inMessage);
            if (outMessage == null) {
                return "";
            }
 
            out = outMessage.toEncryptedXml(wxService.getWxMpConfigStorage());
        }
 
        log.debug("\n组装回复信息：{}", out);
        return out;
    }
 
    private WxMpXmlOutMessage route(WxMpXmlMessage message) {
        try {
            return this.messageRouter.route(message);
        } catch (Exception e) {
            log.error("路由消息时出现异常！", e);
        }
 
        return null;
    }
 
}

3. 在微信公众平台调试

        在接口配置信息，url 填写 域名+ /wx/portal/{appid}

        配置完后，在下发点击发送按钮。配置成功，会弹出配置成功窗口。

三、 开发关注公众号和取关公众号时相应的业务