JAVA Question: getResourceAsStream()

[AJ Mercer]

in CFML, how can I get to getResourceAsStream()?

cl = createObject("java", "java.lang.Class");

dump(cl);

cl = createObject("java", "java.lang.ClassLoader");

dump(cl);

both output

java.io.InputStream

getResourceAsStream(java.lang.String)

​But when I do this I get an error

myR = cl.getResourceAsStream(variables.json);

dump(myR);

​

​I need to load a file and kept it's mime type​

from Java class that I am passing file to

JsonObjectParser parser = new JsonObjectParser(jsonFactory);

    GenericJson fileContents = parser.parseAndClose(

        credentialStream, OAuth2Utils.UTF_8, GenericJson.class);

    String fileType = (String) fileContents.get("type");

    if (fileType == null) {

      throw new IOException("Error reading credentials from stream, 'type' field not specified.");

    }

--

AJ Mercer
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[Joseph Gooch]

I don't think that's quite what you want to do.

getResource would load a file from a classpath or jar... not from a variable.  If you want to pull a file in as a stream you want something else.

You'd get the classloader from an instantiated class, or pull the system class loader. (You probably wouldn't create one)

I.e. if you want to pull a file from the same package as your JsonObjectParser class:

<cfset obj = createobject("java", "your.JsonObjectParser").init(jsonFactory) />

<cfset stream = obj.getClass().getResourceAsStream("variables.json") />

would load your/variables.json from the same location as JsonObjectParser.

More likely you want something like

<cfset stream = createobject("java","java.io.FileInputStream").init(ExpandPath("./variables.json")) />

-G

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[AJ Mercer]

sorry, that is not very clear, variables.json contains the apsolute path to the file

FileInputStream does not have 'type' saved with it, so this fails

String fileType = (String) fileContents.get("type")

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[Joseph Gooch]

fileContents is populated by your parser... not by the stream... If I'm reading your code properly.

What should fileContents.get("type") return?

-G

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[Joseph Gooch]

Based on your code, fileContents.get("type") isn't the mime-type of the file, it's the value of the "type" key within the structure represented in your json object inside your file.

i.e. the file probably has 

{

  "type": "something",

  ....

}

[Markus Wollny]

If by chance what you are talking about is authentication for the Google API using the JSON credentials file (just a wild guess), here's what I do (note I use Mark Mandels tremendously useful class loader, so replace the local.objLoader with a createObject if you've got your classes in the global classpath):

variables.HTTP_Transport           = local.objLoader.create("com.google.api.client.http.javanet.NetHttpTransport").init();

variables.JSON_Factory             = local.objLoader.create("com.google.api.client.json.jackson2.JacksonFactory").init();

variables.WebmasterScopes = local.objLoader.create("com.google.api.services.webmasters.WebmastersScopes");

variables.GoogleCredentialBuilder = local.objLoader.create("com.google.api.client.googleapis.auth.oauth2.GoogleCredential$Builder")

.setTransport(variables.HTTP_Transport)

.setJsonFactory(variables.JSON_Factory)    

.build();

variables.keyFile = '/some/absolute/path/to/the/credentials.json';

...

local.keyFile = createObject("java", "java.io.File").init(variables.keyFile);

local.keyInputStream = createObject("java", "java.io.FileInputStream").init(local.keyFile);

local.credential = variables.GoogleCredentialBuilder    

    .fromStream(local.keyInputStream,variables.HTTP_Transport,variables.JSON_Factory)

    .createScoped(variables.Collections.singleton(variables.WebmasterScopes.WEBMASTERS_READONLY));

local.keyInputStream.close();

So you get the File-Object and open the InputStream on it, close it when you're done and you're all set. As far as I understand that is. Hope that helps :)

Kind regards

  Markus

[AJ Mercer]

That is what I am trying to do.

Thank you very much, this does look useful

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[Markus Wollny]

Hi,

I have just published my code for accessing the Google Search Console API on Github, so if you or anyone else should need some hints for doing the JSON-file authentication dance with the Google API in CFML, you may find a working example there: https://github.com/Ratcreamsoup/CFML_googleSearchConsoleAPI

Kind regards

  Markus

[AJ Mercer]

Thanks for sharing.

I am am using ReST approach now - including oAuth2

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