java ram sdk报错

DefaultProfile profile1 = DefaultProfile.getProfile("cn-hangzhou",
  "<MyAccessKey>", "<Secret>");
IAcsClient iAcsClient1 = new DefaultAcsClient(profile1);

AssumeRoleRequest assumeRoleRequest = new AssumeRoleRequest();
assumeRoleRequest.setRoleArn("<myArm>");
assumeRoleRequest.setRoleSessionName("my_test_session");
assumeRoleRequest.setRegionId("cn-hangzhou");
AssumeRoleResponse assumeRoleResponse = null;
try {
    assumeRoleResponse = iAcsClient1.getAcsResponse(assumeRoleRequest);
} catch (ClientException e) {
    e.printStackTrace();
}

报错：

com.aliyuncs.exceptions.ClientException: SDK.InvalidRegionId : Can not find endpoint to access.