You need to enable JavaScript to run this app.
导航
对象存储
  • 文档首页
    • /对象存储/SDK 参考/Java/存储桶接口/管理桶配置/管理跨域资源共享（Java SDK）
管理跨域资源共享（Java SDK）
最近更新时间：2024.02.04 18:31:02首次发布时间：2023.01.19 14:37:15
我的收藏

桶（Bucket）是 TOS 的全局唯一的命名空间，相当于数据的容器，用来储存对象（Object）数据。TOS 支持设置桶的跨域访问 CORS（Cross-Origin Resource Sharing）规则。当 TOS 收到跨域请求或 OPTIONS 请求时，会读取桶对应的 CORS 规则，进行相应的权限检查并返回相应的 Header，保证跨域传输数据的安全性。本文介绍如何通过 TOS Java SDK 管理桶的跨区域资源共享配置。

设置跨域资源共享规则

您可以通过 TOS Java SDK 的 putBucketCORS 接口设置指定桶的跨域资源共享规则。

注意

要为桶设置跨域资源共享规则，您的账号必须具备 tos:PutBucketCORS 权限，具体操作请参见权限配置指南。

示例代码

以下代码展示如何设置指定桶的跨域资源共享规则。

import com.volcengine.tos.TOSV2;
import com.volcengine.tos.TOSV2ClientBuilder;
import com.volcengine.tos.TosClientException;
import com.volcengine.tos.TosServerException;
import com.volcengine.tos.model.bucket.*;

import java.util.ArrayList;
import java.util.List;

public class PutBucketCORSExample {
    public static void main(String[] args) {
        String endpoint = "your endpoint";
        String region = "your region";
        String accessKey = System.getenv("TOS_ACCESS_KEY");
        String secretKey = System.getenv("TOS_SECRET_KEY");

        String bucketName = "your bucket name";

        TOSV2 tos = new TOSV2ClientBuilder().build(region, endpoint, accessKey, secretKey);

        try{
            List<CORSRule> rules = new ArrayList<>();
            List<String> allowedOrigins = new ArrayList<>();
            allowedOrigins.add("*");
            List<String> allowedMethods = new ArrayList<>();
            allowedMethods.add("GET");
            allowedMethods.add("DELETE");
            allowedMethods.add("PUT");
            List<String> allowedHeaders = new ArrayList<>();
            allowedHeaders.add("Authorization");
            List<String> exposeHeaders = new ArrayList<>();
            exposeHeaders.add("X-TOS-HEADER-1");
            exposeHeaders.add("X-TOS-HEADER-2");
            CORSRule rule1 = new CORSRule()
                    .setAllowedOrigins(allowedOrigins)
                    .setAllowedMethods(allowedMethods)
                    .setAllowedHeaders(allowedHeaders)
                    .setExposeHeaders(exposeHeaders)
                    .setMaxAgeSeconds(3600);
            rules.add(rule1);
            PutBucketCORSInput input = new PutBucketCORSInput().setBucket(bucketName).setRules(rules);
            PutBucketCORSOutput output = tos.putBucketCORS(input);
            System.out.println("putBucketCORS succeed");
        } catch (TosClientException e) {
            // 操作失败，捕获客户端异常，一般情况是请求参数错误，此时请求并未发送
            System.out.println("putBucketCORS failed");
            System.out.println("Message: " + e.getMessage());
            if (e.getCause() != null) {
                e.getCause().printStackTrace();
            }
        } catch (TosServerException e) {
            // 操作失败，捕获服务端异常，可以获取到从服务端返回的详细错误信息
            System.out.println("putBucketCORS failed");
            System.out.println("StatusCode: " + e.getStatusCode());
            System.out.println("Code: " + e.getCode());
            System.out.println("Message: " + e.getMessage());
            System.out.println("RequestID: " + e.getRequestID());
        } catch (Throwable t) {
            // 作为兜底捕获其他异常，一般不会执行到这里
            System.out.println("putBucketCORS failed");
            System.out.println("unexpected exception, message: " + t.getMessage());
        }
    }
}

获取跨域资源共享规则

您可以通过 TOS Java SDK 的 getBucketCORS 接口获取指定桶配置的跨域资源共享规则。

注意

要获取桶的跨域资源共享规则，您的账号必须具备 tos:GetBucketCORS权限，具体操作请参见权限配置指南。

示例代码

以下代码展示如何获取桶配置的跨域资源共享规则。

import com.volcengine.tos.TOSV2;
import com.volcengine.tos.TOSV2ClientBuilder;
import com.volcengine.tos.TosClientException;
import com.volcengine.tos.TosServerException;
import com.volcengine.tos.model.bucket.CORSRule;
import com.volcengine.tos.model.bucket.GetBucketCORSInput;
import com.volcengine.tos.model.bucket.GetBucketCORSOutput;

public class GetBucketCORSExample {
    public static void main(String[] args) {
        String endpoint = "your endpoint";
        String region = "your region";
        String accessKey = System.getenv("TOS_ACCESS_KEY");
        String secretKey = System.getenv("TOS_SECRET_KEY");

        String bucketName = "your bucket name";

        TOSV2 tos = new TOSV2ClientBuilder().build(region, endpoint, accessKey, secretKey);

        try{
            GetBucketCORSInput input = new GetBucketCORSInput().setBucket(bucketName);
            GetBucketCORSOutput output = tos.getBucketCORS(input);
            System.out.println("getBucketCORS succeed");
            if (output.getRules() != null) {
                System.out.println("this bucket has " + output.getRules().size() + " CORS rules");
                for (int i = 0; i < output.getRules().size(); i++){
                    CORSRule rule = output.getRules().get(i);
                    System.out.println("No." + (i+1) + " rule is " + rule.toString());
                }
            }
        } catch (TosClientException e) {
            // 操作失败，捕获客户端异常，一般情况是请求参数错误，此时请求并未发送
            System.out.println("getBucketCORS failed");
            System.out.println("Message: " + e.getMessage());
            if (e.getCause() != null) {
                e.getCause().printStackTrace();
            }
        } catch (TosServerException e) {
            // 操作失败，捕获服务端异常，可以获取到从服务端返回的详细错误信息
            System.out.println("getBucketCORS failed");
            System.out.println("StatusCode: " + e.getStatusCode());
            System.out.println("Code: " + e.getCode());
            System.out.println("Message: " + e.getMessage());
            System.out.println("RequestID: " + e.getRequestID());
        } catch (Throwable t) {
            // 作为兜底捕获其他异常，一般不会执行到这里
            System.out.println("getBucketCORS failed");
            System.out.println("unexpected exception, message: " + t.getMessage());
        }
    }
}

删除跨域资源共享规则

您可以通过 TOS Java SDK 的 deleteBucketCORS 接口删除指定桶配置的跨域资源共享规则。

注意

要删除桶的跨域资源共享规则，您的账号必须具备tos:PutBucketCORS 权限，具体操作请参见权限配置指南。

示例代码

以下代码展示如何删除指定桶的跨域资源共享规则。

import com.volcengine.tos.TOSV2;
import com.volcengine.tos.TOSV2ClientBuilder;
import com.volcengine.tos.TosClientException;
import com.volcengine.tos.TosServerException;
import com.volcengine.tos.model.bucket.DeleteBucketCORSInput;
import com.volcengine.tos.model.bucket.DeleteBucketCORSOutput;

public class DeleteBucketCORSExample {
    public static void main(String[] args) {
        String endpoint = "your endpoint";
        String region = "your region";
        String accessKey = System.getenv("TOS_ACCESS_KEY");
        String secretKey = System.getenv("TOS_SECRET_KEY");
        String bucketName = "your bucket name";

        TOSV2 tos = new TOSV2ClientBuilder().build(region, endpoint, accessKey, secretKey);

        try{
            DeleteBucketCORSInput input = new DeleteBucketCORSInput().setBucket(bucketName);
            DeleteBucketCORSOutput output = tos.deleteBucketCORS(input);
            System.out.println("deleteBucketCORS succeed, " + output);
        } catch (TosClientException e) {
            // 操作失败，捕获客户端异常，一般情况是请求参数错误，此时请求并未发送
            System.out.println("deleteBucketCORS failed");
            System.out.println("Message: " + e.getMessage());
            if (e.getCause() != null) {
                e.getCause().printStackTrace();
            }
        } catch (TosServerException e) {
            // 操作失败，捕获服务端异常，可以获取到从服务端返回的详细错误信息
            System.out.println("deleteBucketCORS failed");
            System.out.println("StatusCode: " + e.getStatusCode());
            System.out.println("Code: " + e.getCode());
            System.out.println("Message: " + e.getMessage());
            System.out.println("RequestID: " + e.getRequestID());
        } catch (Throwable t) {
            // 作为兜底捕获其他异常，一般不会执行到这里
            System.out.println("deleteBucketCORS failed");
            System.out.println("unexpected exception, message: " + t.getMessage());
        }
    }
}

相关文档

关于跨域资源共享的更多信息，请参见跨域访问设置。