<dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-aop</artifactId> </dependency> <dependency> <groupId>org.springframework.retry</groupId> <artifactId>spring-retry</artifactId> </dependency>
Dépendance complète sur pom.xml
<?xml version="1.0" encoding="UTF-8"?> <project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd"> <modelVersion>4.0.0</modelVersion> <parent> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-parent</artifactId> <version>2.7.7</version> <relativePath/> <!-- lookup parent from repository --> </parent> <groupId>com.example</groupId> <artifactId>demo</artifactId> <version>0.0.1-SNAPSHOT</version> <name>demo</name> <description>Demo project for Spring Boot</description> <properties> <java.version>1.8</java.version> </properties> <dependencies> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-web</artifactId> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-devtools</artifactId> <scope>runtime</scope> <optional>true</optional> </dependency> <dependency> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> <optional>true</optional> </dependency> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-test</artifactId> <scope>test</scope> </dependency> <!-- spring-retry --> <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-aop</artifactId> </dependency> <dependency> <groupId>org.springframework.retry</groupId> <artifactId>spring-retry</artifactId> </dependency> </dependencies> <build> <plugins> <plugin> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-maven-plugin</artifactId> <configuration> <excludes> <exclude> <groupId>org.projectlombok</groupId> <artifactId>lombok</artifactId> </exclude> </excludes> </configuration> </plugin> </plugins> </build> </project>
@EnableRetry
package com.example.demo; import org.springframework.boot.SpringApplication; import org.springframework.boot.autoconfigure.SpringBootApplication; import org.springframework.retry.annotation.EnableRetry; @EnableRetry @SpringBootApplication public class Application { public static void main(String[] args) { SpringApplication.run(Application.class, args); } }Utiliser l'annotation de nouvelle tentative@Annotation réessayable#🎜 🎜#
multiplier, précisez le multiple du délai
maxDelayExpression, l'expression du temps d'attente maximum entre les tentatives
multiplierExpression, l'expression multiplicateur qui précise le délai
#🎜 🎜#package com.example.demo.component; import org.springframework.retry.annotation.Recover; import org.springframework.retry.annotation.Retryable; import org.springframework.stereotype.Component; @Component public class HttpRequest { private int count = 0; /** * 模拟网络请求异常 * @return */ @Retryable(recover = "errorHandler") public String getResponse() { count++; System.out.println("time: " + count); if (count < 4) { throw new RuntimeException("count: " + count); } return "success"; } /** * 错误处理函数 * 注意:需要返回 String,否则会抛出方法找不到异常 * org.springframework.retry.ExhaustedRetryException: Cannot locate recovery method * * @param e * @return */ @Recover public String errorHandler(RuntimeException e) { System.out.println("errorHandler"); return "ok"; } }# 🎜🎜#Test
package com.example.demo.component; import org.junit.jupiter.api.Test; import org.springframework.beans.factory.annotation.Autowired; import org.springframework.boot.test.context.SpringBootTest; @SpringBootTest public class HttpRequestTest { @Autowired private HttpRequest httpRequest; @Test public void getResponse(){ httpRequest.getResponse(); } }# 🎜🎜#Résultat de sortie
heure : 1
heure : 2Ce qui précède est le contenu détaillé de. pour plus d'informations, suivez d'autres articles connexes sur le site Web de PHP en chinois!