Java 代码重试实现方式

依赖包

<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>

    <groupId>org.example</groupId>
    <artifactId>learn-demo</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
        <maven.compiler.source>20</maven.compiler.source>
        <maven.compiler.target>20</maven.compiler.target>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <spring.version>3.1.2</spring.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
            <version>${spring.version}</version>
        </dependency>
        <dependency>
            <groupId>org.projectlombok</groupId>
            <artifactId>lombok</artifactId>
            <version>1.18.28</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
            <version>2.0.32</version>
        </dependency>

			 <dependency>
			     <groupId>org.aspectj</groupId>
			     <artifactId>aspectjweaver</artifactId>
			     <version>1.9.19</version>
			 </dependency>
			 <dependency>
            <groupId>cglib</groupId>
            <artifactId>cglib</artifactId>
            <version>3.3.0</version>
        </dependency>

        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
            <version>4.13.2</version>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
            <version>6.0.11</version>
        </dependency>

    </dependencies>

</project>

一.方法内直接自动重试

    public static void main(String[] args) {
   
        autoRetry(3);
    }

    /**
     * 自动重试（执行总次数包含于重试次数内）
     * 优点:实现简单
     * 缺点:复用性差，代码侵入
     * @param retryTimes
     */
    public static void autoRetry(int retryTimes){
   
        int times = 0;
        do {
   
            try {
   
                int i = 3/0;
            } catch (Exception e) {
   
                times++;
                System.out.println("第" + times + "次失败");
            }
        } while (times < retryTimes);
    }

二.静态代理方式

1.启动类

package org.example;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

/**
 * @author Administrator
 */
@SpringBootApplication
public class LearnApp {
   

    public static void main(String[] args) {
   
        SpringApplication.run(LearnApp.class,args);
    }
}

2.接口

package org.example.service;

/**
 * @description
 * @author zhuwd && moon
 * @version 1.0
 */
public interface LearnService {
   

    /**
     * 自动重试
     */
    void autoRetry();
}

3.实现

package org.example.service.impl;

import org.example.service.LearnService;
import org.springframework.stereotype.Service;

/**
 * @author zhuwd && moon
 * @Description
 * @create 2023-08-08 1:05
 */
@Service
public class LearnServiceImpl implements LearnService {
   
    @Override
    public void autoRetry() {
   
        throw new RuntimeException();
    }
}

4.静态代理

package org.example.service.impl;

import org.example.service.LearnService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stere