aizuda -robot 学习

类名 ExceptionAspect

@within =切入所有的类包括子类注解
@Pointcut("@within(org.springframework.web.bind.annotation.RestController)")
//出现异常之后进入此类
@AfterThrowing(value =“restControllerPointCut()”,throwing = “e”)

通过 代码

@AllArgsConstructor
public  class RobotSendException implements ISendException {
    
    private List sendMessageList;
    private IErrorMessageHandler errorMessageHandler;



    @Override
    public boolean send(JoinPoint joinPoint, Excepti
    on e) {
        try {
            String message = errorMessageHandler.message(joinPoint, e);
            for (ISendMessage sendMessage : sendMessageList) {
                sendMessage.send(message);
            }
            return true;
        } catch (Throwable t) {
            
            return false;
        }
    }
}

其中主要 依赖两个注入
private List sendMessageList;
private IErrorMessageHandler errorMessageHandler;
作用

sendMessageList 通过这个 类进行信息发送
errorMessageHandler 处理统一的异常

其中 List 是通过
RobotProperties 配合 RobotAutoConfiguration
通过@ConditionalOnProperty注解判断是否存在 运用@ConditionalOnMissingBean来注入该类
结合spring spi 机制 配置
spring.factories
org.springframework.boot.autoconfigure.EnableAutoConfiguration=
com.aizuda.robot.autoconfigure.RobotAutoConfiguration

若yml 配置了则会成功注入

其中主要方法是
ISendMessage.send

该接口由于 抽象类 AbstractRobotSendMessage 实现 并通过 方法 request 动态处理 url

restTemplate.postForEntity(this.getUrl(),
                new HttpEntity<>(objectMap, headers), Map.class).getBody();
  
    public abstract String getUrl() throws Exception;
               

其他多个发送信息类 各继承 AbstractRobotSendMessage

实现 send 和 getUrl
在send 中 调用url 第二个参数 则 传入发送的值 而在 AbstractRobotSendMessage .request 中调用 this.getUrl 也在 各个类中进行重写

 @Override
    public boolean send(String message) throws Exception {
        return this.request(restTemplate, new HashMap(3) {{
            put("msgtype", "text");
            put("at", new HashMap(1) {{
                put("isAtAll", true);
            }});
            put("text", new HashMap(1) {{
                put("content", message);
            }});
        }});
    }
    @Override
    public String getUrl() throws Exception {
        RobotProperties.DingTalk dingTalk = robotProperties.getDingTalk();
        StringBuffer url = new StringBuffer();
        url.append("https://oapi.dingtalk.com/robot/send?access_token=");
        url.append(dingTalk.getAccessToken());
        String secret = dingTalk.getSecret();
        if (StringUtils.hasLength(secret)) {
            Long timestamp = System.currentTimeMillis();
            url.append("×tamp=").append(timestamp);
            String sign = AlgorithmUtils.encodebase64HmacSHA256(secret, timestamp + "n" + secret);
            url.append("&sign=").append(URLEncoder.encode(sign, "UTF-8"));
        }
        return url.toString();
    }

从而实现方法服用