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您可以通过ObsClient.getBucketCors查看桶的跨域规则。以下代码展示了如何查看跨域规则：

String endPoint = "https://your-endpoint";
String ak = "*** Provide your Access Key ***";
String sk = "*** Provide your Secret Key ***";
// 创建ObsClient实例
ObsClient obsClient = new ObsClient(ak, sk, endPoint);


BucketCors cors = obsClient.getBucketCors("bucketname");
for(BucketCorsRule rule : cors.getRules()){
    System.out.println("\t" + rule.getId());
    System.out.println("\t" + rule.getMaxAgeSecond());
    System.out.println("\t" + rule.getAllowedHeader());
    System.out.println("\t" + rule.getAllowedOrigin());
    System.out.println("\t" + rule.getAllowedMethod());
    System.out.println("\t" + rule.getExposeHeader());
}