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更新：问题（如下；见“原始问题”）仍然存在，但我有额外的数据。services通过将访问令牌作为实例化字段的字符串放入源代码中，我能够成功检索资产。即，这有效：

String token = "[mysecrettoken]";
try{
    connector = V1Connector
        .withInstanceUrl(V1_LOC)
        .withUserAgentHeader(APPLICATION_NAME, APPLICATION_VERSION)
        .withAccessToken(token)
        .build();
}

但是，当我使用我创建的类从加密的文本文件中检索令牌时，它会失败并出现我在下面指定的错误。

String token = TokenUtils.getAccessToken();

我过去常常System.out.println直观地验证令牌是否被完美解密。当它直接包含在源代码中时，为什么TokenUtils（似乎是正确的）返回的解密字符串与字符串有任何不同？

原始问题：

我遇到了与Griffin 类似的问题，但我使用的是 Java，到目前为止我无法找出根本原因。值得注意的是，该程序的早期版本能够成功连接到 VersionOne 并检索资产，但是当我检索到该提交并使用当前访问令牌（自提交后已更改）再次尝试时，我得到了相同的结果错误如下。

这是相关的方法；该services变量是包含类的一个字段：

private Asset findTeam(String teamName){

        assert teamName != null;

        Asset result = null;
        IAssetType assetType = services.getMeta().getAssetType("Team");
        Query query = new Query(assetType);
        IAttributeDefinition nameAttr = 
            assetType.getAttributeDefinition("Name");
        query.getSelection().add(nameAttr);

        try{
            QueryResult queryResult = services.retrieve(query);

            for (Asset team: queryResult.getAssets()){
                String str = team.getAttribute(nameAttr).getValue().toString();
                assert str != null;
                if (teamName.equals(str)){
                    result = team;
                    break;
                }
            }           
        }
        catch(Exception e){
            assert false;
            e.printStackTrace();
        }
        return result;

    }

这是由此产生的错误：

com.versionone.apiclient.exceptions.ConnectionException: 
HTTP/1.1 400 Bad Request error code: 400 VersionOne could not process the request.
    at com.versionone.apiclient.V1Connector.manageErrors(V1Connector.java:420)
    at com.versionone.apiclient.V1Connector.getData(V1Connector.java:368)
    at com.versionone.apiclient.MetaModel.createDocument(MetaModel.java:252)
    at com.versionone.apiclient.MetaModel.hookupAssetType(MetaModel.java:185)
    at com.versionone.apiclient.MetaModel.findAssetType(MetaModel.java:140)
    at com.versionone.apiclient.MetaModel.getAssetType(MetaModel.java:85)
    at com.billhorvath.v1mods.TeamModder.addToTeam(TeamModder.java:63)
    at com.billhorvath.v1mods.TeamModder.main(TeamModder.java:38)
com.versionone.apiclient.exceptions.MetaException: Error creating Document: Team
    at com.versionone.apiclient.MetaModel.createDocument(MetaModel.java:259)
    at com.versionone.apiclient.MetaModel.hookupAssetType(MetaModel.java:185)
    at com.versionone.apiclient.MetaModel.findAssetType(MetaModel.java:140)
    at com.versionone.apiclient.MetaModel.getAssetType(MetaModel.java:85)
    at com.billhorvath.v1mods.TeamModder.addToTeam(TeamModder.java:63)
    at com.billhorvath.v1mods.TeamModder.main(TeamModder.java:38)
Caused by: com.versionone.apiclient.exceptions.ConnectionException: 
HTTP/1.1 400 Bad Request error code: 400 VersionOne could not process the request.
    at com.versionone.apiclient.V1Connector.manageErrors(V1Connector.java:420)
    at com.versionone.apiclient.V1Connector.getData(V1Connector.java:368)
    at com.versionone.apiclient.MetaModel.createDocument(MetaModel.java:252)
    ... 5 more
Exception in thread "main" com.versionone.apiclient.exceptions.MetaException: Unknown AssetType: Team
    at com.versionone.apiclient.MetaModel.getAssetType(MetaModel.java:88)
    at com.billhorvath.v1mods.TeamModder.addToTeam(TeamModder.java:63)
    at com.billhorvath.v1mods.TeamModder.main(TeamModder.java:38)
Caused by: com.versionone.apiclient.exceptions.MetaException: Error creating Document: Team
    at com.versionone.apiclient.MetaModel.createDocument(MetaModel.java:259)
    at com.versionone.apiclient.MetaModel.hookupAssetType(MetaModel.java:185)
    at com.versionone.apiclient.MetaModel.findAssetType(MetaModel.java:140)
    at com.versionone.apiclient.MetaModel.getAssetType(MetaModel.java:85)
    ... 2 more
Caused by: com.versionone.apiclient.exceptions.ConnectionException: 
HTTP/1.1 400 Bad Request error code: 400 VersionOne could not process the request.
    at com.versionone.apiclient.V1Connector.manageErrors(V1Connector.java:420)
    at com.versionone.apiclient.V1Connector.getData(V1Connector.java:368)
    at com.versionone.apiclient.MetaModel.createDocument(MetaModel.java:252)
    ... 5 more

除了通常的搜索之外，我还查看了VersionOne Java API的源代码，以及400 错误代码的 RFC；我还没有找到任何答案。有人有什么建议吗？

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1 回答 1

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（向Mark Irvin 致敬二进制比较建议。）

事实证明，问题与令牌的加密方式有关：由于令牌长度为 30 个字符，并且密码算法（在本例中为 AES）要求为 32 个字节，因此在加密期间附加了两个空白字节。加密过程。我修改了解密周期以去除字符串末尾整数值为 0 的字符，哇！有用。

于 2015-07-16T20:36:32.993 回答