java - 为什么VersionOne无法识别 Assets 类型？

更新：问题（如下；见“原始问题”）仍然有效，但我有其他数据。通过将access token作为字符串放入源代码中，并在其中实例化services字段，我成功地检索了一个资产。也就是说，这是有效的：

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

但是，当我使用创建的类从加密文本文件中检索令牌时，它将失败，并出现下面指定的错误。

String token = TokenUtils.getAccessToken();

我使用System.out.println来直观地验证令牌是否被完全解密。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不同？
原题：
我有一个与Griffin's类似的问题，但是我使用的是java，到目前为止我还无法找出根本原因。值得注意的是，此程序的早期版本能够成功连接到versionone并检索资产，但当我检索到该提交并使用当前访问令牌（该令牌自提交以来已更改）再次尝试时，我得到的错误与下面相同。
以下是相关的方法；services变量是包含类的字段：

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;

    }

下面是产生的错误：

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，我还查看了VersionOne Java API的源代码，以及RFC for the 400 error code；我没有找到任何答案。有人有什么建议吗？

最佳答案

（对于二进制比较建议，hat tip toMark Irvin。）
结果发现，这个问题与令牌的加密方式有关：由于令牌的长度为30个字符，并且密码算法（本例中为aes）的要求为32个字节，所以在加密过程中追加了两个空白字节。我修改了解密循环，将整数值为0的字符从字符串末尾去掉，然后wallah！它起作用了。

关于java - 为什么VersionOne无法识别 Assets 类型？，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/31461932/