Java AWS源代码中的错误?
在我们的代码中,我们从sqs队列中删除一条消息并获得Java AWS源代码中的错误?,java,spring,amazon-web-services,amazon-sqs,Java,Spring,Amazon Web Services,Amazon Sqs,在我们的代码中,我们从sqs队列中删除一条消息并获得deletResponse String deleteResponse = sqsClient.deleteMessage(simBridge2ESBUrl, message.getReceiptHandle()).toString(); 该消息在此调用后被删除,但deletesponse始终为{}。因此,我们检查了源代码,发现DeleteMessageResult::toString函数只返回{} 下面是AWS的源代码。toString()
deletResponse
String deleteResponse = sqsClient.deleteMessage(simBridge2ESBUrl, message.getReceiptHandle()).toString();
该消息在此调用后被删除,但deletesponse
始终为{}
。因此,我们检查了源代码,发现DeleteMessageResult::toString
函数只返回{}
下面是AWS的源代码。toString()
和hashCode()
函数似乎很奇怪。源代码中有错误吗?还是我做错了?谢谢
/*
* Copyright 2010-2016 Amazon.com, Inc. or its affiliates. All Rights
* Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License").
* You may not use this file except in compliance with the License.
* A copy of the License is located at
*
* http://aws.amazon.com/apache2.0
*
* or in the "license" file accompanying this file. This file is distributed
* on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
* express or implied. See the License for the specific language governing
* permissions and limitations under the License.
*/
package com.amazonaws.services.sqs.model;
import java.io.Serializable;
/**
*
*/
public class DeleteMessageResult implements Serializable, Cloneable {
/**
* Returns a string representation of this object; useful for testing and
* debugging.
*
* @return A string representation of this object.
*
* @see java.lang.Object#toString()
*/
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("{");
sb.append("}");
return sb.toString();
}
@Override
public boolean equals(Object obj) {
if (this == obj)
return true;
if (obj == null)
return false;
if (obj instanceof DeleteMessageResult == false)
return false;
DeleteMessageResult other = (DeleteMessageResult) obj;
return true;
}
@Override
public int hashCode() {
final int prime = 31;
int hashCode = 1;
return hashCode;
}
@Override
public DeleteMessageResult clone() {
try {
return (DeleteMessageResult) super.clone();
} catch (CloneNotSupportedException e) {
throw new IllegalStateException(
"Got a CloneNotSupportedException from Object.clone() "
+ "even though we're Cloneable!", e);
}
}
}
从编程角度看,正确编写了
toString()
。想想这个函数的作用:
此对象的字符串表示形式
由于DeleteMessageResult
类没有属性,因此没有要返回的内容。这同样适用于hashCode()
。DeleteMessageResult
的两个对象始终相同,因此它们每次都具有相同的哈希值
话虽如此,我确实认为DeleteMessageResult
应该包含ResposeMetadata
,具有唯一的RequestId
,如所示:
b5293cb5-d306-4a17-9048-b263635abe42
因此,是的,这个类可以(可能,应该)进行修补,以完全支持SQS API。请参阅删除SQS消息的官方说明。
<DeleteMessageResponse>
<ResponseMetadata>
<RequestId>
b5293cb5-d306-4a17-9048-b263635abe42
</RequestId>
</ResponseMetadata>
</DeleteMessageResponse>