java - 为什么 VersionOne 无法识别 Assets 类型？

Question

更新:问题(见下文；见“原始问题”)仍然有效，但我有更多数据。通过将访问 token 作为 services 字段被实例化的字符串放入源代码，我能够成功检索 Assets 。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文本文件中检索 token 时，它会失败并出现我在下面指定的错误。

String token = TokenUtils.getAccessToken();

我已经使用 System.out.println 直观地验证 token 是否被完美解密。为什么 TokenUtils 返回的解密字符串(看起来是正确的)与直接包含在源代码中的字符串有任何不同？

原始问题:

我遇到了与 Griffin's 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 Assets ，但是当我检索该提交并使用当前访问 token (自提交以来已更改)再次尝试时，我得到了相同的结果错误如下。

这里是相关的方法； 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

除了常规搜索之外，我还查看了 VersionOne Java API 的源代码，以及 RFC for the 400 error code ;我还没有找到任何答案。有人有什么建议吗？

Answer 1

(向 Mark Irvin 致敬二进制比较建议。)

事实证明，问题与 token 的加密方式有关:由于 token 的长度为 30 个字符，并且密码算法(在本例中为 AES)要求 32 个字节，因此两个空白字节是在加密过程中附加。我修改了解密周期以从字符串末尾去除整数值为 0 的字符，wallah!有用。