简单重试策略 Spring

Question

我正在浏览文档，可以看到有一些功能非常有用，但是进一步我意识到它们不再存在或者我错了？我想根据异常类型执行业务逻辑 -> 或者更详细地说，如果我的客户的异常类型是我想避免重试。

这是我在 docs.spring.io

中找到的

 SimpleRetryPolicy policy = new SimpleRetryPolicy();
// Set the max retry attempts
policy.setMaxAttempts(5);
// Retry on all exceptions (this is the default)
policy.setRetryableExceptions(new Class[] {Exception.class});
// ... but never retry IllegalStateException
policy.setFatalExceptions(new Class[] {IllegalStateException.class});

如有任何建议，我将不胜感激，我不想使用注释@Retryble

Answer 1

您究竟是在哪里找到该文档的？

查看 SimpleRetryPolicy...

的 javadoc

    /**
     * Create a {@link SimpleRetryPolicy} with the specified number of retry attempts. If
     * traverseCauses is true, the exception causes will be traversed until a match is
     * found. The default value indicates whether to retry or not for exceptions (or super
     * classes) are not found in the map.
     * @param maxAttempts the maximum number of attempts
     * @param retryableExceptions the map of exceptions that are retryable based on the
     * map value (true/false).
     * @param traverseCauses is this clause traversable
     * @param defaultValue the default action.
     */
    public SimpleRetryPolicy(int maxAttempts, Map<Class<? extends Throwable>, Boolean> retryableExceptions,
            boolean traverseCauses, boolean defaultValue) {
        super();
        this.maxAttempts = maxAttempts;
        this.retryableClassifier = new BinaryExceptionClassifier(retryableExceptions, defaultValue);
        this.retryableClassifier.setTraverseCauses(traverseCauses);
    }

您添加 retryable/not 可重试异常并确定我们是否应该遍历原因树直到找到匹配项（如果您想采用默认值，也有参数较少的构造函数）。

简单重试策略 Spring

SimpleRetryPolicy Spring

java

spring

spring-retry