java - 如何使用java组合S3中的策略？

Question

如何使用java组合S3中的策略？

Statement allowRestrictedWriteStatement = new Statement(Effect.Allow)
        .withPrincipals(new Principal("1234567"))
        .withActions(S3Actions.DeleteObject)
        .withResources(new S3ObjectResource(myBucketName, "demoFolder1"));


Statement allowRestrictedWriteStatement2 = new Statement(Effect.Deny)
        .withPrincipals(new Principal("1234567"))
        .withActions(S3Actions.DeleteObject)
        .withResources(new S3ObjectResource(myBucketName, "demoFolder2"));

Policy policy2 = new Policy()
        .withStatements(allowRestrictedWriteStatement2)
        .withStatements(allowRestrictedWriteStatement);

它仅设置 allowRestrictedWriteStatement 语句或 Policy 对象中的最后一个(在我们的例子中 allowRestrictedWriteStatement)。有没有一种方法可以使用一个 Policy 对象组合两个策略或多个策略，请提出任何想法。

Answer 1

您需要调用一次 withStatements 并传递多个 Statement 实例 ( JavaDoc ):

new Policy().withStatements(allowRestrictedWriteStatement, allowRestrictedWriteStatement2);