Object Storage Service:OSS SDK for Goを使用したオブジェクトのリスト

ListObjectsV2

次のサンプルコードは、ListObjectsV2操作を呼び出して、バケット内の特定の数のオブジェクトを一覧表示する方法の例を示しています。

package main

import (
    "log"
    "time"
    "github.com/aliyun/aliyun-oss-go-sdk/oss"
)

func main() {
    // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
    provider, err := oss.NewEnvironmentVariableCredentialsProvider()
    if err != nil {
        log.Fatalf("Failed to create credentials provider: %v", err)
    }

    // Create an OSSClient instance. 
    // Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. Specify your actual endpoint. 
    endpoint := "yourEndpoint" // Replace yourEndpoint with the actual endpoint.
    client, err := oss.New(endpoint, "", "", oss.SetCredentialsProvider(&provider))
    if err != nil {
        log.Fatalf("Failed to create OSS client: %v", err)
    }

    // Specify the name of the bucket. 
    bucketName := "yourBucketName" // Replace yourBucketName with the actual bucket name.
    bucket, err := client.Bucket(bucketName)
    if err != nil {
        log.Fatalf("Failed to get bucket: %v", err)
    }

    // Configure the MaxKeys parameter to specify the maximum number of objects that can be listed at a time and list the objects. 
    maxKeys := 200
    continueToken := ""

    for {
        lsRes, err := bucket.ListObjectsV2(oss.MaxKeys(maxKeys), oss.StartAfter(continueToken))
        if err != nil {
            log.Fatalf("Failed to list objects: %v", err)
        }

        // Display the listed objects. By default, up to 100 objects are returned at a time. 
        for _, object := range lsRes.Objects {
            log.Printf("Object Key: %s, Type: %s, Size: %d, ETag: %s, LastModified: %s, StorageClass: %s, Owner ID: %s, Owner DisplayName: %s\n",
                object.Key, object.Type, object.Size, object.ETag, object.LastModified.Format(time.RFC3339), object.StorageClass, object.Owner.ID, object.Owner.DisplayName)
        }

        // If you want to list more objects, update the value of the continueToken parameter. 
        if lsRes.IsTruncated {
            continueToken = lsRes.ContinuationToken
        } else {
            break
        }
    }

    log.Println("All objects have been listed.")
}

ListObjects

次のサンプルコードは、ListObjects操作を呼び出してバケット内の特定の数のオブジェクトを一覧表示する方法の例を示しています。

package main

import (
    "log"
    "github.com/aliyun/aliyun-oss-go-sdk/oss"
)

func main() {
    // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
    provider, err := oss.NewEnvironmentVariableCredentialsProvider()
    if err != nil {
        log.Fatalf("Failed to create credentials provider: %v", err)
    }

    // Create an OSSClient instance. 
    // Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. Specify your actual endpoint. 
    endpoint := "yourEndpoint" // Replace yourEndpoint with the actual endpoint.
    client, err := oss.New(endpoint, "", "", oss.SetCredentialsProvider(&provider))
    if err != nil {
        log.Fatalf("Failed to create OSS client: %v", err)
    }

    // Specify the name of the bucket. 
    bucketName := "yourBucketName" // Replace yourBucketName with the actual bucket name.
    bucket, err := client.Bucket(bucketName)
    if err != nil {
        log.Fatalf("Failed to get bucket: %v", err)
    }

    // Specify the maximum number of objects that can be listed at a time and list the objects. 
    maxKeys := 200
    lsRes, err := bucket.ListObjects(oss.MaxKeys(maxKeys))
    if err != nil {
        log.Fatalf("Failed to list objects: %v", err)
    }

    // Display the listed objects. By default, up to 100 objects are returned at a time. 
    log.Printf("Found %d objects:\n", len(lsRes.Objects))
    for _, object := range lsRes.Objects {
        log.Printf("Object: %s\n", object.Key)
    }

    if lsRes.IsTruncated {
        log.Printf("More objects available. NextMarker: %s\n", lsRes.NextMarker)
    } else {
        log.Println("All objects have been listed.")
    }
}

ListObjectsV2

次のサンプルコードでは、ListObjectsV2操作を呼び出して、名前に特定のプレフィックスが含まれるオブジェクトを一覧表示する方法の例を示します。

package main

import (
    "log"
    "time"
    "github.com/aliyun/aliyun-oss-go-sdk/oss"
)

func main() {
    // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
    provider, err := oss.NewEnvironmentVariableCredentialsProvider()
    if err != nil {
        log.Fatalf("Failed to create credentials provider: %v", err)
    }

    // Create an OSSClient instance. 
    // Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. Specify your actual endpoint. 
    endpoint := "yourEndpoint" // Replace yourEndpoint with the actual endpoint.
    client, err := oss.New(endpoint, "", "", oss.SetCredentialsProvider(&provider))
    if err != nil {
        log.Fatalf("Failed to create OSS client: %v", err)
    }

    // Specify the name of the bucket. 
    bucketName := "yourBucketName" // Replace yourBucketName with the actual bucket name.
    bucket, err := client.Bucket(bucketName)
    if err != nil {
        log.Fatalf("Failed to get bucket: %v", err)
    }

    // Set the Prefix parameter to my-object-. 
    prefix := "my-object-"
    lsRes, err := bucket.ListObjectsV2(oss.Prefix(prefix))
    if err != nil {
        log.Fatalf("Failed to list objects: %v", err)
    }

    // Display the listed objects. By default, up to 100 objects are returned at a time. 
    log.Printf("Found %d objects with prefix '%s':\n", len(lsRes.Objects), prefix)
    for _, object := range lsRes.Objects {
        log.Printf("Object Key: %s, Type: %s, Size: %d, ETag: %s, LastModified: %s, StorageClass: %s, Owner ID: %s, Owner DisplayName: %s\n",
            object.Key, object.Type, object.Size, object.ETag, object.LastModified.Format(time.RFC3339), object.StorageClass, object.Owner.ID, object.Owner.DisplayName)
    }

    if lsRes.IsTruncated {
        log.Printf("More objects available. Next Continuation Token: %s\n", lsRes.NextContinuationToken)
    } else {
        log.Println("All objects have been listed.")
    }
}

ListObjects

次のサンプルコードでは、ListObjects操作を呼び出して、名前に特定のプレフィックスが含まれるオブジェクトを一覧表示する方法の例を示します。

package main

import (
	"log"

	"github.com/aliyun/aliyun-oss-go-sdk/oss"
)

func main() {
	// Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
	provider, err := oss.NewEnvironmentVariableCredentialsProvider()
	if err != nil {
		log.Fatalf("Failed to create credentials provider: %v", err)
	}

	// Create an OSSClient instance. 
	// Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. Specify your actual endpoint. 
	endpoint := "yourEndpoint" // Replace yourEndpoint with the actual endpoint.
	client, err := oss.New(endpoint, "", "", oss.SetCredentialsProvider(&provider))
	if err != nil {
		log.Fatalf("Failed to create OSS client: %v", err)
	}

	// Specify the name of the bucket. 
	bucketName := "yourBucketName" // Replace yourBucketName with the actual bucket name.
	bucket, err := client.Bucket(bucketName)
	if err != nil {
		log.Fatalf("Failed to get bucket: %v", err)
	}

	// List objects whose names contain a specific prefix. By default, up to 100 objects are listed. 
	prefix := "my-object-"
	lsRes, err := bucket.ListObjects(oss.Prefix(prefix))
	if err != nil {
		log.Fatalf("Failed to list objects: %v", err)
	}

	// Display the listed objects. By default, up to 100 objects are returned at a time. 
	log.Printf("Found %d objects with prefix '%s':\n", len(lsRes.Objects), prefix)
	for _, object := range lsRes.Objects {
		log.Printf("Object Key: %s\n", object.Key)
	}

	if lsRes.IsTruncated {
		log.Printf("More objects available. Next Marker: %s\n", lsRes.NextMarker)
	} else {
		log.Println("All objects have been listed.")
	}
}

ListObjectsV2

StartAfterパラメーターを設定して、リスト操作の開始位置を指定できます。 StartAfterパラメータの値の後に名前がアルファベット順になっているすべてのオブジェクトが返されます。

package main

import (
	"log"
	"time"

	"github.com/aliyun/aliyun-oss-go-sdk/oss"
)

func main() {
	// Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
	provider, err := oss.NewEnvironmentVariableCredentialsProvider()
	if err != nil {
		log.Fatalf("Failed to create credentials provider: %v", err)
	}

	// Create an OSSClient instance. 
	// Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. Specify your actual endpoint. 
	endpoint := "yourEndpoint" // Replace yourEndpoint with the actual endpoint.
	client, err := oss.New(endpoint, "", "", oss.SetCredentialsProvider(&provider))
	if err != nil {
		log.Fatalf("Failed to create OSS client: %v", err)
	}

	// Specify the name of the bucket. 
	bucketName := "yourBucketName" // Replace yourBucketName with the actual bucket name.
	bucket, err := client.Bucket(bucketName)
	if err != nil {
		log.Fatalf("Failed to get bucket: %v", err)
	}

	// Configure the StartAfter parameter to list objects whose names are alphabetically after the value of the StartAfter parameter. By default, up to 100 objects are listed. 
	startAfter := "my-object-"
	lsRes, err := bucket.ListObjectsV2(oss.StartAfter(startAfter))
	if err != nil {
		log.Fatalf("Failed to list objects: %v", err)
	}

	// Display the listed objects. By default, up to 100 objects are returned at a time. 
	log.Printf("Found %d objects starting after '%s':\n", len(lsRes.Objects), startAfter)
	for _, object := range lsRes.Objects {
		log.Printf("Object Key: %s, Type: %s, Size: %d, ETag: %s, LastModified: %s, StorageClass: %s, Owner ID: %s, Owner DisplayName: %s\n",
			object.Key, object.Type, object.Size, object.ETag, object.LastModified.Format(time.RFC3339), object.StorageClass, object.Owner.ID, object.Owner.DisplayName)
	}

	if lsRes.IsTruncated {
		log.Printf("More objects available. Next Continuation Token: %s\n", lsRes.NextContinuationToken)
	} else {
		log.Println("All objects have been listed.")
	}
}

ListObjects

Markerパラメーターを設定して、リスト操作の開始位置を指定できます。 Markerパラメーターの値の後に名前がアルファベット順になっているすべてのオブジェクトが返されます。

package main

import (
	"log"

	"github.com/aliyun/aliyun-oss-go-sdk/oss"
)

func main() {
	// Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
	provider, err := oss.NewEnvironmentVariableCredentialsProvider()
	if err != nil {
		log.Fatalf("Failed to create credentials provider: %v", err)
	}

	// Create an OSSClient instance. 
	// Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. Specify your actual endpoint. 
	endpoint := "yourEndpoint" // Replace yourEndpoint with the actual endpoint.
	client, err := oss.New(endpoint, "", "", oss.SetCredentialsProvider(&provider))
	if err != nil {
		log.Fatalf("Failed to create OSS client: %v", err)
	}

	// Specify the name of the bucket. 
	bucketName := "yourBucketName" // Replace yourBucketName with the actual bucket name.
	bucket, err := client.Bucket(bucketName)
	if err != nil {
		log.Fatalf("Failed to get bucket: %v", err)
	}

	// Specify the marker parameter.
	marker := ""

	// List all objects whose names are alphabetically after the value of the Marker parameter.
	for {
		lsRes, err := bucket.ListObjects(oss.Marker(marker))
		if err != nil {
			log.Fatalf("Failed to list objects: %v", err)
		}

		// Display the listed objects. By default, up to 100 objects are returned at a time. 
		log.Printf("Found %d objects:\n", len(lsRes.Objects))
		for _, object := range lsRes.Objects {
			log.Printf("Object: %s\n", object.Key)
		}

		// If the returned results are truncated, update the value of the marker parameter to obtain the remaining results.
		if lsRes.IsTruncated {
			marker = lsRes.NextMarker
		} else {
			break
		}
	}

	log.Println("All objects have been listed.")
}

ListObjectsV2

次のサンプルコードでは、ListObjectsV2操作を呼び出して、特定のバケット内のすべてのオブジェクトをページごとに一覧表示する方法の例を示します。 MaxKeysパラメーターを設定して、各ページに一覧表示できるオブジェクトの最大数を指定できます。

package main

import (
    "log"
    "time"
    "github.com/aliyun/aliyun-oss-go-sdk/oss"
)

func main() {
    // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
    provider, err := oss.NewEnvironmentVariableCredentialsProvider()
    if err != nil {
        log.Fatalf("Failed to create credentials provider: %v", err)
    }

    // Create an OSSClient instance. 
    // Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. Specify your actual endpoint. 
    endpoint := "yourEndpoint" // Replace yourEndpoint with the actual endpoint.
    client, err := oss.New(endpoint, "", "", oss.SetCredentialsProvider(&provider))
    if err != nil {
        log.Fatalf("Failed to create OSS client: %v", err)
    }

    // Specify the name of the bucket. 
    bucketName := "yourBucketName" // Replace yourBucketName with the actual bucket name.
    bucket, err := client.Bucket(bucketName)
    if err != nil {
        log.Fatalf("Failed to get bucket: %v", err)
    }

    // List all objects by page. Specify that up to 100 objects can be listed on each page. 
    continueToken := ""
    for {
        lsRes, err := bucket.ListObjectsV2(oss.MaxKeys(100), oss.ContinuationToken(continueToken))
        if err != nil {
            log.Fatalf("Failed to list objects: %v", err)
        }

        // Display the listed objects. By default, up to 100 objects are returned at a time. 
        log.Printf("Found %d objects:\n", len(lsRes.Objects))
        for _, object := range lsRes.Objects {
            log.Printf("Object Key: %s, Type: %s, Size: %d, ETag: %s, LastModified: %s, StorageClass: %s\n",
                object.Key, object.Type, object.Size, object.ETag, object.LastModified.Format(time.RFC3339), object.StorageClass)
        }

        // If the returned results are truncated, update the value of the continueToken parameter to obtain the remaining results.
        if lsRes.IsTruncated {
            continueToken = lsRes.NextContinuationToken
        } else {
            break
        }
    }

    log.Println("All objects have been listed.")
}

ListObjects

次のサンプルコードでは、ListObjects操作を呼び出して、特定のバケット内のすべてのオブジェクトをページごとに一覧表示する方法の例を示します。 MaxKeysパラメーターを設定して、各ページに一覧表示できるオブジェクトの最大数を指定できます。

package main

import (
    "log"
    "time"
    "github.com/aliyun/aliyun-oss-go-sdk/oss"
)

func main() {
    // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
    provider, err := oss.NewEnvironmentVariableCredentialsProvider()
    if err != nil {
        log.Fatalf("Failed to create credentials provider: %v", err)
    }

    // Create an OSSClient instance. 
    // Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. Specify your actual endpoint. 
    endpoint := "yourEndpoint" // Replace yourEndpoint with the actual endpoint.
    client, err := oss.New(endpoint, "", "", oss.SetCredentialsProvider(&provider))
    if err != nil {
        log.Fatalf("Failed to create OSS client: %v", err)
    }

    // Specify the name of the bucket. 
    bucketName := "yourBucketName" // Replace yourBucketName with the actual bucket name.
    bucket, err := client.Bucket(bucketName)
    if err != nil {
        log.Fatalf("Failed to get bucket: %v", err)
    }

    // List all objects by page. Specify that up to 100 objects can be listed on each page. 
    marker := ""
    for {
        lsRes, err := bucket.ListObjects(oss.MaxKeys(100), oss.Marker(marker))
        if err != nil {
            log.Fatalf("Failed to list objects: %v", err)
        }

        // Display the listed objects. By default, up to 100 objects are returned at a time. 
        log.Printf("Found %d objects:\n", len(lsRes.Objects))
        for _, object := range lsRes.Objects {
            log.Printf("Object Key: %s, Type: %s, Size: %d, ETag: %s, LastModified: %s, StorageClass: %s\n",
                object.Key, object.Type, object.Size, object.ETag, object.LastModified.Format(time.RFC3339), object.StorageClass)
        }

        // If the returned results are truncated, update the value of the marker parameter to obtain the remaining results.
        if lsRes.IsTruncated {
            marker = lsRes.NextMarker
        } else {
            break
        }
    }

    log.Println("All objects have been listed.")
}

ListObjectsV2

次のサンプルコードでは、ListObjectsV2操作を呼び出して、名前に特定のプレフィックスが含まれているオブジェクトをページごとに一覧表示する方法の例を示します。 MaxKeysパラメーターを設定して、各ページに一覧表示できるオブジェクトの最大数を指定できます。

package main

import (
    "log"
    "time"
    "github.com/aliyun/aliyun-oss-go-sdk/oss"
)

func main() {
    // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
    provider, err := oss.NewEnvironmentVariableCredentialsProvider()
    if err != nil {
        log.Fatalf("Failed to create credentials provider: %v", err)
    }

    // Create an OSSClient instance. 
    // Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. Specify your actual endpoint. 
    endpoint := "yourEndpoint" // Replace yourEndpoint with the actual endpoint.
    client, err := oss.New(endpoint, "", "", oss.SetCredentialsProvider(&provider))
    if err != nil {
        log.Fatalf("Failed to create OSS client: %v", err)
    }

    // Specify the name of the bucket. 
    bucketName := "yourBucketName" // Replace yourBucketName with the actual bucket name.
    bucket, err := client.Bucket(bucketName)
    if err != nil {
        log.Fatalf("Failed to get bucket: %v", err)
    }

    // List the objects whose names contain a specific prefix by page. Specify that up to 80 objects can be listed on each page. 
    prefix := "my-object-"
    continueToken := ""
    for {
        lsRes, err := bucket.ListObjectsV2(oss.Prefix(prefix), oss.MaxKeys(80), oss.ContinuationToken(continueToken))
        if err != nil {
            log.Fatalf("Failed to list objects: %v", err)
        }

        // Display the listed objects. By default, up to 100 objects are returned at a time. 
        log.Printf("Found %d objects with prefix '%s':\n", len(lsRes.Objects), prefix)
        for _, object := range lsRes.Objects {
            log.Printf("Object Key: %s, Type: %s, Size: %d, ETag: %s, LastModified: %s, StorageClass: %s\n",
                object.Key, object.Type, object.Size, object.ETag, object.LastModified.Format(time.RFC3339), object.StorageClass)
        }

        // If the returned results are truncated, update the value of the marker parameter to obtain the remaining results.
        if lsRes.IsTruncated {
            continueToken = lsRes.NextContinuationToken
        } else {
            break
        }
    }

    log.Println("All objects have been listed.")
}

ListObjects

次のサンプルコードでは、ListObjects操作を呼び出して、名前に特定のプレフィックスが含まれているオブジェクトをページごとに一覧表示する方法の例を示します。 MaxKeysパラメーターを設定して、各ページに一覧表示できるオブジェクトの最大数を指定できます。

package main

import (
    "log"
    "time"
    "github.com/aliyun/aliyun-oss-go-sdk/oss"
)

func main() {
    // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
    provider, err := oss.NewEnvironmentVariableCredentialsProvider()
    if err != nil {
        log.Fatalf("Failed to create credentials provider: %v", err)
    }

    // Create an OSSClient instance. 
    // Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. Specify your actual endpoint. 
    endpoint := "yourEndpoint" // Replace yourEndpoint with the actual endpoint.
    client, err := oss.New(endpoint, "", "", oss.SetCredentialsProvider(&provider))
    if err != nil {
        log.Fatalf("Failed to create OSS client: %v", err)
    }

    // Specify the name of the bucket. 
    bucketName := "yourBucketName" // Replace yourBucketName with the actual bucket name.
    bucket, err := client.Bucket(bucketName)
    if err != nil {
        log.Fatalf("Failed to get bucket: %v", err)
    }

    // List objects whose names contain a specific prefix by page. Specify that up to 80 objects can be listed on each page. 
    prefix := "my-object-"
    marker := ""
    for {
        lsRes, err := bucket.ListObjects(oss.MaxKeys(80), oss.Marker(marker), oss.Prefix(prefix))
        if err != nil {
            log.Fatalf("Failed to list objects: %v", err)
        }

        // Display the listed objects. By default, up to 100 objects are returned at a time. 
        log.Printf("Found %d objects with prefix '%s':\n", len(lsRes.Objects), prefix)
        for _, object := range lsRes.Objects {
            log.Printf("Object Key: %s, Type: %s, Size: %d, ETag: %s, LastModified: %s, StorageClass: %s\n",
                object.Key, object.Type, object.Size, object.ETag, object.LastModified.Format(time.RFC3339), object.StorageClass)
        }

        // If the returned results are truncated, update the value of the marker parameter to obtain the remaining results.
        if lsRes.IsTruncated {
            marker = lsRes.NextMarker
        } else {
            break
        }
    }

    log.Println("All objects have been listed.")
}

ListObjectsV2

次のサンプルコードでは、ListObjectsV2操作を呼び出して、オブジェクトサイズ、最終変更時刻、オブジェクト名など、特定のディレクトリ内のすべてのオブジェクトに関する情報を一覧表示する方法の例を示します。

package main

import (
    "log"
    "time"
    "github.com/aliyun/aliyun-oss-go-sdk/oss"
)

func main() {
    // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
    provider, err := oss.NewEnvironmentVariableCredentialsProvider()
    if err != nil {
        log.Fatalf("Failed to create credentials provider: %v", err)
    }

    // Create an OSSClient instance. 
    // Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. Specify your actual endpoint. 
    endpoint := "yourEndpoint" // Replace yourEndpoint with the actual endpoint.
    client, err := oss.New(endpoint, "", "", oss.SetCredentialsProvider(&provider))
    if err != nil {
        log.Fatalf("Failed to create OSS client: %v", err)
    }

    // Specify the name of the bucket. 
    bucketName := "yourBucketName" // Replace yourBucketName with the actual bucket name.
    bucket, err := client.Bucket(bucketName)
    if err != nil {
        log.Fatalf("Failed to get bucket: %v", err)
    }

    // List objects whose names contain a specific prefix by page. By default, up to 100 objects are returned at a time. 
    continueToken := ""
    prefix := "fun"
    for {
        lsRes, err := bucket.ListObjectsV2(oss.Prefix(prefix), oss.ContinuationToken(continueToken))
        if err != nil {
            log.Fatalf("Failed to list objects: %v", err)
        }

        // Display the listed objects. 
        for _, object := range lsRes.Objects {
            log.Printf("Object Key: %s, Type: %s, Size: %d, ETag: %s, LastModified: %s, StorageClass: %s\n",
                object.Key, object.Type, object.Size, object.ETag, object.LastModified.Format(time.RFC3339), object.StorageClass)
        }

        // If the returned results are truncated, update the value of the marker parameter to obtain the remaining results.
        if lsRes.IsTruncated {
            continueToken = lsRes.NextContinuationToken
        } else {
            break
        }
    }

    log.Println("All objects have been listed.")
}

ListObjects

次のサンプルコードでは、ListObjects操作を呼び出して、オブジェクトサイズ、最終変更時刻、オブジェクト名など、特定のディレクトリ内のすべてのオブジェクトに関する情報を一覧表示する方法の例を示します。

package main

import (
    "log"
    "time"
    "github.com/aliyun/aliyun-oss-go-sdk/oss"
)

func main() {
    // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
    provider, err := oss.NewEnvironmentVariableCredentialsProvider()
    if err != nil {
        log.Fatalf("Failed to create credentials provider: %v", err)
    }

    // Create an OSSClient instance. 
    // Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. Specify your actual endpoint. 
    endpoint := "yourEndpoint" // Replace yourEndpoint with the actual endpoint.
    client, err := oss.New(endpoint, "", "", oss.SetCredentialsProvider(&provider))
    if err != nil {
        log.Fatalf("Failed to create OSS client: %v", err)
    }

    // Specify the name of the bucket. 
    bucketName := "yourBucketName" // Replace yourBucketName with the actual bucket name.
    bucket, err := client.Bucket(bucketName)
    if err != nil {
        log.Fatalf("Failed to get bucket: %v", err)
    }

    // Traverse all objects. 
    marker := ""
    prefix := "test"
    for {
        lor, err := bucket.ListObjects(oss.Marker(marker), oss.Prefix(prefix))
        if err != nil {
            log.Fatalf("Failed to list objects: %v", err)
        }

        // Display the listed objects. 
        for _, object := range lor.Objects {
            log.Printf("Object Key: %s, Type: %s, Size: %d, ETag: %s, LastModified: %s, StorageClass: %s\n",
                object.Key, object.Type, object.Size, object.ETag, object.LastModified.Format(time.RFC3339), object.StorageClass)
        }

        // If the returned results are truncated, update the value of the marker parameter to obtain the remaining results.
        if lor.IsTruncated {
            marker = lor.NextMarker
        } else {
            break
        }
    }

    log.Println("All objects have been listed.")
}

ListObjectsV2

次のサンプルコードでは、ListObjectsV2操作を呼び出して、特定のディレクトリ内のすべてのサブディレクトリに関する情報を一覧表示する方法の例を示します。

package main

import (
	"log"

	"github.com/aliyun/aliyun-oss-go-sdk/oss"
)

func main() {
	// Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
	provider, err := oss.NewEnvironmentVariableCredentialsProvider()
	if err != nil {
		log.Fatalf("Failed to create credentials provider: %v", err)
	}

	// Create an OSSClient instance. 
	// Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. Specify your actual endpoint. 
	endpoint := "yourEndpoint" // Replace yourEndpoint with the actual endpoint.
	client, err := oss.New(endpoint, "", "", oss.SetCredentialsProvider(&provider))
	if err != nil {
		log.Fatalf("Failed to create OSS client: %v", err)
	}

	// Specify the name of the bucket. 
	bucketName := "yourBucketName" // Replace yourBucketName with the actual bucket name.
	bucket, err := client.Bucket(bucketName)
	if err != nil {
		log.Fatalf("Failed to get bucket: %v", err)
	}

	// List all subdirectories in a specific directory by page. By default, up to 100 objects are returned at a time. 
	continueToken := ""
	prefix := ""
	for {
		lsRes, err := bucket.ListObjectsV2(oss.Prefix(prefix), oss.ContinuationToken(continueToken), oss.Delimiter("/"))
		if err != nil {
			log.Fatalf("Failed to list objects: %v", err)
		}

		// Display the listed subdirectories. 
		for _, dirName := range lsRes.CommonPrefixes {
			log.Println("Directory Name:", dirName)
		}

		// If the returned results are truncated, update the value of the marker parameter to obtain the remaining results.
		if lsRes.IsTruncated {
			continueToken = lsRes.NextContinuationToken
		} else {
			break
		}
	}

	log.Println("All directories have been listed.")
}

ListObjects

次のサンプルコードでは、ListObjects操作を呼び出して、特定のディレクトリ内のすべてのサブディレクトリに関する情報を一覧表示する方法の例を示します。

package main

import (
    "log"
    "time"
    "github.com/aliyun/aliyun-oss-go-sdk/oss"
)

func main() {
    // Obtain access credentials from environment variables. Before you run the sample code, make sure that the OSS_ACCESS_KEY_ID and OSS_ACCESS_KEY_SECRET environment variables are configured. 
    provider, err := oss.NewEnvironmentVariableCredentialsProvider()
    if err != nil {
        log.Fatalf("Failed to create credentials provider: %v", err)
    }

    // Create an OSSClient instance. 
    // Specify the endpoint of the region in which the bucket is located. For example, if the bucket is located in the China (Hangzhou) region, set the endpoint to https://oss-cn-hangzhou.aliyuncs.com. Specify your actual endpoint. 
    endpoint := "yourEndpoint" // Replace yourEndpoint with the actual endpoint.
    client, err := oss.New(endpoint, "", "", oss.SetCredentialsProvider(&provider))
    if err != nil {
        log.Fatalf("Failed to create OSS client: %v", err)
    }

    // Specify the name of the bucket. 
    bucketName := "yourBucketName" // Replace yourBucketName with the actual bucket name.
    bucket, err := client.Bucket(bucketName)
    if err != nil {
        log.Fatalf("Failed to get bucket: %v", err)
    }

    // List all subdirectories in a specific directory by page. By default, up to 100 objects are returned at a time. 
    marker := ""
    prefix := "yourDirPrefix" // Replace yourDirPrefix with the actual directory name.
    for {
        lor, err := bucket.ListObjects(oss.Marker(marker), oss.Prefix(prefix), oss.Delimiter("/"))
        if err != nil {
            log.Fatalf("Failed to list objects: %v", err)
        }

        // Display the listed subdirectories. 
        for _, dirName := range lor.CommonPrefixes {
            log.Println("Directory Name:", dirName)
        }

        // If the returned results are truncated, update the value of the marker parameter to obtain the remaining results.
        if lor.IsTruncated {
            marker = lor.NextMarker
        } else {
            break
        }
    }

    log.Println("All directories have been listed.")
}