org.springframework.beans.factory.UnsatisfiedDependencyException：创建名称为“s3Controller”的bean时出错：表达了不满足的依赖关系

Question

我正在使用 Maven 在 Java 17 上开发 AWS SDK v2 spring boot 项目，我尝试运行该文件，但它给我一个错误，提示“org.springframework.beans.factory.UnsatisfiedDependencyException：创建名为 's3Controller 的 bean 时出错” '：通过字段's3Service'表达的依赖关系不满足：创建文件中定义的名称为's3Service'的bean时出错[/Users/aswinshaji/Documents/workspace-spring-tool-suite-4-4.22.0.RELEASE/webflux-demo/ target/classes/com/example/demo/services/S3Service.class]：通过构造函数参数 0 表达的依赖关系不满足：创建名称为“s3Config”的 bean 时出错：自动装配依赖关系注入失败”。 “创建文件中定义的名为“s3Service”的 bean 时出错”。 “创建名称为“s3Config”的 bean 时出错：自动装配依赖项注入失败”。我尽我所能尝试了一切，但无法解决问题。谁能帮我解决这个问题？谢谢

package com.example.demo.controller;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.http.HttpStatus;
import org.springframework.http.ResponseEntity;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;

import com.example.demo.services.S3Service;

@RestController
@RequestMapping("/file")
public class S3Controller {
    
    @Autowired
    private S3Service s3Service;
    @GetMapping("/listAllObjects")
    public ResponseEntity<List<String>> viewObjects() {
        return new ResponseEntity<>(s3Service.listObjects(),HttpStatus.OK);
    }
}

S3控制器

package com.example.demo.entities;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;

import software.amazon.awssdk.auth.credentials.AwsBasicCredentials;
import software.amazon.awssdk.auth.credentials.StaticCredentialsProvider;
import software.amazon.awssdk.regions.Region;
import software.amazon.awssdk.services.s3.S3Client;

@Configuration
public class S3Config {
    @Value("${region}")
    private String region;

    @Value("${accesskey}")
    private String accessKey;

    @Value("${secretKey}")
    private String secretKey;

    @Bean
    public S3Client s3Client() {
        AwsBasicCredentials credentials = AwsBasicCredentials.create(accessKey, secretKey);
        return S3Client.builder()
                .credentialsProvider(StaticCredentialsProvider.create(credentials))
                .region(Region.of(region))
                .build();
    }
}

S3配置

package com.example.demo.services;

import java.util.List;
import java.util.stream.Collectors;

import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;

import software.amazon.awssdk.services.s3.S3Client;
import software.amazon.awssdk.services.s3.model.ListObjectsResponse;
import software.amazon.awssdk.services.s3.model.S3Object;

@Service
public class S3Service {
    private final S3Client s3Client;
    private final String bucketName;

    public S3Service(S3Client s3Client, @Value("${bucketName}") String bucketName) {
        this.s3Client = s3Client;
        this.bucketName = bucketName;
    }

    public List<String> listObjects() {
        ListObjectsResponse response = s3Client.listObjects(builder -> builder.bucket(bucketName));
        return response.contents().stream().map(S3Object::key).collect(Collectors.toList());
    }
}

S3服务

spring.application.name=webflux-demo
aws.region=${region}
aws.accessKey=${accessKey}
aws.secretKey=${secretKey}
aws.bucketName=${bucketName}
spring.autoconfigure.exclude=org.springframework.boot.autoconfigure.jdbc.DataSourceAutoConfiguration

应用程序.属性

Answer 1

我的代码和你的一样，错误也一样。修改pom文件中s3的版本后，错误消失，运行正常。

  <dependency>
        <groupId>software.amazon.awssdk</groupId>
        <artifactId>s3</artifactId>
        <version>2.25.52</version>
    </dependency>