如何将 Spring Boot 中的配置属性注入 Spring Retry 注释? [英] How to inject config properties in Spring Boot to Spring Retry annotation?

问题描述

在 spring boot 应用程序中，我在 yaml 文件中定义了一些配置属性，如下所示.

In spring boot application, I define some config properties in yaml file as below.

my.app.maxAttempts = 10
my.app.backOffDelay = 500L

和一个示例 bean

@ConfigurationProperties(prefix = "my.app")
public class ConfigProperties {
  private int maxAttempts;
  private long backOffDelay;

  public int getMaxAttempts() {
    return maxAttempts;
  }

  public void setMaxAttempts(int maxAttempts) {
    this.maxAttempts = maxAttempts;
  }

  public void setBackOffDelay(long backOffDelay) {
    this.backOffDelay = backOffDelay;
  }

  public long getBackOffDelay() {
    return backOffDelay;
  }

如何将 my.app.maxAttempts 和 my.app.backOffdelay 的值注入 Spring Retry 注释?在下面的示例中，我想将 maxAttempts 的值 10 和退避值的 500L 替换为相应的配置属性引用.

How can I inject the values of my.app.maxAttempts and my.app.backOffdelay to Spring Retry annotation? In the example below, I want to replace the value 10 of maxAttempts and 500Lof backoff value with the corresponding references of config properties.

@Retryable(maxAttempts=10, include=TimeoutException.class, backoff=@Backoff(value = 500L))

推荐答案

spring-retry-1.2.0我们可以在@Retryable注解中使用可配置的属性.

Staring from spring-retry-1.2.0 we can use configurable properties in @Retryable annotation.

使用maxAttemptsExpression"，用法参考以下代码，

Use "maxAttemptsExpression", Refer the below code for usage,

 @Retryable(maxAttemptsExpression = "#{${my.app.maxAttempts}}",
 backoff = @Backoff(delayExpression = "#{${my.app. backOffDelay}}"))

如果您使用任何低于 1.2.0 的版本，它将不起作用.此外，您不需要任何可配置的属性类.

It will not work if you use any version less than 1.2.0.Also you don't require any configurable property classes.

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