Opening and using Alibaba cloud object storage OSS

Alibaba cloud object storage OSS Opening and use of

Preface ：

The practical part of this blog is for me SpringBoot+Vue Written for online education project .

One 、 Open alicloud OSS

1 Enter alicloud's official website , Find Alibaba cloud object storage OSS entrance

2 Click on the object store OSS

3 Click to open the service

4 Agree to the agreement , Click open now

5 Click management console

6 Click Create Bucket

7 establish Bucket

8 Upload files

9 Upload any image

10 Now you can view the pictures , You can see URL Information

Two 、 Opening AccessKey

1 Click on AccessKey

2 Continue to use AccessKey

3 Mobile phone verification

4 You can see the secret key information

5 Click save AK Information , Will automatically download a csv file

6 Click the learning path

7 Click on Java SDK

8 You can view alicloud OSS Official documents of

3、 ... and 、 Project practice Use Java SDK operation OSS

Combine my Springboot+Vue Online education project , Integrating Alibaba cloud OSS

1 First, we need to introduce Alibaba cloud OSS Related dependencies , Refer to official documents

			<!--aliyunOSS--> <dependency> <groupId>com.aliyun.oss</groupId> <artifactId>aliyun-sdk-oss</artifactId> <version>${aliyun.oss.version}</version> </dependency>

2 stay service Layer creation service_oss modular

3 stay pom.xml Add dependency to

<dependencies>
        <!--  Alibaba cloud oss rely on  -->
        <dependency>
            <groupId>com.aliyun.oss</groupId>
            <artifactId>aliyun-sdk-oss</artifactId>
        </dependency>

        <!--  The date toolbar depends on  -->
        <dependency>
            <groupId>joda-time</groupId>
            <artifactId>joda-time</artifactId>
        </dependency>
</dependencies>

4 Writing configuration files application.properties
Be careful ：OSS No space is allowed before or after the relevant configuration

#  Port number 
server.port=8002
#  service name 
spring.application.name=service-oss
#  Environment settings 
spring.profiles.active=dev

#  Integrate Alibaba cloud OSS
aliyun.oss.file.endpoint=
aliyun.oss.file.keyid=
aliyun.oss.file.keysecret=
# bucket You can create... In the console , You can also use java Code creation 
aliyun.oss.file.bucketname=

5 Write the startup class OssApplication.java
Be careful ： To exclude data source loading , Need to be in SpringBootApplication To add execude=DataSourceAutoConfiguration.class

@SpringBootApplication(exclude = DataSourceAutoConfiguration.class)// Do not load the data source 
@ComponentScan(basePackages = {
    "com.atguigu"})
public class OssApplication {
    

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

6 Write configuration tool class
Be careful ： This tool class needs to be added Component annotation , And need to realize InitializingBean Interface , rewrite afterPropertiesSet() Method , The purpose is to take advantage of the defined private attributes .

// When the project starts ,spring There's an interface ,spring After loading , Execute an interface method 
@Component
public class ConstantPropertiesUtils implements InitializingBean {
    // I. startup project , This class will initialize 

    // Read the contents of the configuration file 
    @Value("${aliyun.oss.file.endpoint}")
    private String endpoint;

    @Value("${aliyun.oss.file.keyid}")
    private String keyId;

    @Value("${aliyun.oss.file.keysecret}")
    private String keySecret;

    @Value("${aliyun.oss.file.bucketname}")
    private String bucketName;

    // Define open static constants 

    public static String END_POINT;
    public static String ACCESS_KEY_ID;
    public static String ACCESS_KEY_SECRET;
    public static String BUCKET_NAME;

    @Override
    public void afterPropertiesSet() throws Exception {
    
        END_POINT = endpoint;
        ACCESS_KEY_ID = keyId;
        ACCESS_KEY_SECRET = keySecret;
        BUCKET_NAME = bucketName;
    }
}

7 service layer

You can view alicloud OSS Official documents , Make changes

OssService.java

public interface OssService {
    
    // Upload avatar to OSS
    String uploadOssFileAvatar(MultipartFile file);
}

OssServiceImpl.java

Be careful ： Why return the final... Of the uploaded object url, because controller To put the url As the response body information, it is passed into . Alibaba cloud OSS Official documents did not find direct access to this url Methods , You need to splice strings manually .

@Service
public class OssServiceImpl implements OssService {
    
    @Override
    public String uploadOssFileAvatar(MultipartFile file) {
    

        // Get... Through the tool class 
        String endpoint = ConstantPropertiesUtils.END_POINT;
        String accessKeyId = ConstantPropertiesUtils.ACCESS_KEY_ID;
        String accessKeySecret = ConstantPropertiesUtils.ACCESS_KEY_SECRET;
        String bucketName = ConstantPropertiesUtils.BUCKET_NAME;


        //  Upload file stream .
        InputStream inputStream = null;
        try {
    
            //  establish OSSClient example .
            OSS ossClient = new OSSClientBuilder().build(endpoint, accessKeyId, accessKeySecret);
            //  Get the input stream of the uploaded file 
            inputStream = file.getInputStream();
            //  Get the file name 
            String filename = file.getOriginalFilename();

            //  call oss Method upload 
            //  The first parameter ： Bucket name   The second parameter ：  Upload to oss File path and file name  /aa/bb/1.jpg  The third parameter ：  Input stream for uploading files 

            ossClient.putObject(bucketName, filename, inputStream);

            //  close OSSClient.
            ossClient.shutdown();

            //  Return the uploaded file path to 
            // https://edu-0912.oss-cn-beijing.aliyuncs.com/4c480a7029cbea756e87d34940654825.jpg
            return "https://" + bucketName + "." + endpoint + "/" + filename;
        } catch (Exception e) {
    
            e.printStackTrace();
            return null;
        }

    }
}

8 controller
Be careful ： Need to be in controller Add @CrossOrign annotation , Open cross domain requests

@RestController
@RequestMapping(path = "/eduoss")
@CrossOrigin
public class OssController {
    

    @Autowired
    private OssService ossService;

    // How to upload avatars 
    @PostMapping("/uploadOssFile")
    public R uploadOssFileAvatar(MultipartFile file){
    
        // Get uploaded files  MultipartFile
        String url = ossService.uploadOssFileAvatar(file);

        return R.ok().data("url",url);
    }
}

9 Start the project ,Swagger test
Get into swagger, It's time to start debugging

10 Upload files

11 OSS Background view , You can find an additional picture

12 Project structure
service_oss The function of the module is to add avatars to lecturers

Conclusion ：

Level co., LTD. , For reference only , If there is any mistake , Hope to point out at any time ！