I have a json file with data for all the tiles in my game that I store in the assets folder. I try to access and parse it using TileList dataList = json.fromJson(TileList.class, Gdx.file.internal("map-elements/tiles/tiles.json")). This works fine for the desktop version but on the html version, after converting with gwt, I get these errors:
GwtApplication: exception: Error reading file: map-elements/tiles/tiles.json
Error reading file: map-elements/tiles/tiles.json
Couldn't find Type for class 'net.vediogames.archipelo.world.tiles.TileList'
TileList is a simple object that contains an array of TileData which can then be converted into Tile objects. I did it this way to make the json parsing easy.
The solution to the json error is simple. Instead of passing the FileHandle into the json parser, pass the string from the file like this:
TileList dataList = json.fromJson(TileList.class, Gdx.file.internal("map-elements/tiles/tiles.json").readString());
In the end, all I needed to do to solve that issue is add .readString(). As for the Couldn't find Type for class 'net.vediogames.archipelo.world.tiles.TileList' error, I also found a solution but it is more complicated.
JavaScript handles class references differently than Java. So I was not able to use TileList.class without first registering it so LibGDX can generate a Reflection. What I needed to do was add this line into my *.gwt.xml files:
<extend-configuration-property name="gdx.reflect.include" value="net.vediogames.archipelo.world.tiles.TileList" />
If you want a full tutorial about how reflection works and how to include packages or exclude, please view the official LibGDX tutorial here.
Your solution was not working for me, I still got the same error. After some hours of testing I got it to work, using your suggestions and by using the ClassReflection instead of referencing the class itself.
Your example:
TileList dataList = json.fromJson(TileList.class, Gdx.file.internal("map-elements/tiles/tiles.json").readString());
looks in my working code like:
TileList dataList = (TileList) json.fromJson(ClassReflection.forName(TileList.class.getName()), Gdx.file.internal("map-elements/tiles/tiles.json").readString());
This is quite a pain in the a.. but I'm glad it is finally working now.
Related
I'm having some trouble figuring out how to migrate my code to use org.stringtemplate.v4 . I have a single template file in a 'templates' folder under src/main/resources. Nothing fancy going on. I just need to load the template, set a few attributes, and pass it along in my html response. The problem is, the template is getting bundled into the deployed jar, which means I can't do a normal classpath lookup. Usually in a case like this, I would use an InputStream, but I can't find any way of doing that with the available constructors for ST and STGroup. Does anyone know how to do this? is there an easier way I'm just overlooking?
Here is what my code looks like:
STGroup group = new STGroupDir("templates");
ST template = group.getInstanceOf("smartSubmitResponse");
template.add("errors", results.exceptions.asMap());
template.add("plannedDates", results.plannedDates);
return Response.status(Response.Status.OK).header("smartSubmitFileUrl", url)
.header("errors", errorHeaders.toString()).entity(template.toString()).build();
Currently, it is failing with a null pointer exception since template is not being set correctly.
I finally figured it out. I needed to use org.stringtemplate.v4.STRawGroupDir since my template was using the older format with no wrapping characters. My result ended up looking like this:
STGroup group = new STRawGroupDir("templates",'$','$');
ST template = group.getInstanceOf("smartSubmitResponse");
i am trying to parse the following json file in java with gson:
So , I am trying to retrieve only the issues into a list of Issue. I have the following class to store the issue information:
But i got an error.. I am trying to get with the following but I think that i am so lost with this ( i am learning about this ) and i dont understand the error
any idea of how to do this? thank you so much!
obj.get("issues")
will actually return a List Object, and not an Issue Object. You need to change the second parameter accordingly.
I am trying to unittest a freemarker.ftl file which includes jsptaglib (from the HippoCMS).
It's not working when trying to inlcuding a jsptaglib and gives me a error message.
Freemarker code;
<#include "include/imports.ftl">
<#hst.setBundle basename="freemarker.test"/>
Hello step4
I've tested to see If the template is being mocked and it actually does;
configuration.setDirectoryForTemplateLoading(new File("../freemarker"));
final Template template = configuration.getTemplate("Helloworld.ftl");
At this rate I ran the test, and I could see the raw data from the ftl file. To be sure If i actually get data from the template.
So I tried to go a step further and map it (where it goes wrong);
Map model = new HashMap();
/* populate model */
template.process(model, new OutputStreamWriter(System.out));
This is where it goes wrong and gives this error when running the test;
And the directory for the include is;
<#ftl encoding="UTF-8">
<#assign hst=JspTaglibs["http://www.hippoecm.org/jsp/hst/core"] >
<#assign fmt=JspTaglibs["http://java.sun.com/jsp/jstl/fmt"] >
<#hst.defineObjects />
Im not sure how to fix this issue, I've tried many different attempts but with no luck.
reference;
https://theodoreyoung.wordpress.com/2011/02/19/freemarker-jsp-taglibs-outside-war/#more-227
http://techqa.info/programming/question/20100276/adding-spring-security-jsptaglib-to-a-freemarker-template---issues-with-controller-unit-tests
Some are saying that this issue was fixed in the newest release of freemarker, but dosen't seems thats is the case either.
Hey, all! I have a class method who's primary function is to get a Map object, which works fine; however, it's an expensive operation that doesn't need to be done every time, so I'd like to have the results stored in an XML file using JAXB, to be read from for the majority of calls and updated infrequently.
When I run a class that calls it out of NetBeans the file is created no problem with exactly what I want -- but when I have my JSP call the method nothing happens whatsoever, even though the rest of the information is passed normally. I have the feeling it's somehow lacking write privileges, but the file is just in the root directory so I'm not sure what I'm missing. Thanks for the help!
The code looks roughly like this:
public class DataHandler() {
...
public void config() {
MapHolder bucket = new MapHolder();
MapExporter exp = new MapExporter();
Map map = makeMap();
bucket.setMap(map);
exp.exportMap(bucket);
}
}
And then the JSP has a javabean of Datahandler, and this line:
databean.config();
It's probably a tad more fragmented than it needs to be; the whole bucket rigamarole was because I was stumbling trying to learn how to write a map to an xml file. Mapholder is just a class that I wrap around the map, and MapExporter just uses a JAXB marshaller, and it all does work properly when run from NetBeans.
OK turns out I'm just dumb; everything was working fine, the file was just being stored in a folder at the localhost location. Whoops! That'd be my inexperience with web development at work.
I'm trying to set up a small Android application which extracts content from a web page using the Goose library. Since the library is written in Scala, I'm using the .jar I found here. The problem is, when I try to extract content from a page, it returns nothing. I successfully create an Article object using the URL I need, but the values of the object (title, domain, topImage etc.) are all null. I tried using different urls, to see if the problem was isolated to a single website, but it doesn't appear to be so.
The code I use to set up the Goose instance is this:
gooseDir = context.getCacheDir();
Configuration config = new Configuration();
config.setLocalStoragePath(gooseDir.getAbsolutePath());
Goose goose = new Goose(config);
And then I just create the Article instance like so:
Article article = goose.extractContent(url);
Any advice?
Actually you can't use the Goose library on Android due to incompatibilities, but you can use my Android version: https://github.com/milosmns/goose
It does almost the same thing as Goose, only works well on Android.