Data source from a json file (error java.lang.NullPointerException)

[fabiano.gabardo.lemos]

Hello friends,

I am trying get values from arquive, but this arquive is in a url (fabianogabardolemos.esy.es/teste2.json) e when a try get the value a erros message is showed:

ava.lang.NullPointerException

at net.sf.jasperreports.data.http.HttpDataService.getPropertyOrParameterValue(HttpDataService.java:504)

at net.sf.jasperreports.data.http.HttpDataService.getUsername(HttpDataService.java:193)

at net.sf.jasperreports.data.http.HttpDataService.setAuthentication(HttpDataService.java:177)

at com.jaspersoft.studio.data.adapter.JSSBuiltinDataFileServiceFactory$1.createHttpClient(JSSBuiltinDataFileServiceFactory.java:62)

at net.sf.jasperreports.data.http.HttpDataService.getDataFileConnection(HttpDataService.java:150)

at net.sf.jasperreports.data.DataFileUtils.createConnection(DataFileUtils.java:72)

at net.sf.jasperreports.data.DataFileUtils.getDataStream(DataFileUtils.java:78)

at net.sf.jasperreports.data.json.JsonDataAdapterService.contributeParameters(JsonDataAdapterService.java:75)

at net.sf.jasperreports.data.AbstractDataAdapterService.test(AbstractDataAdapterService.java:122)

at com.jaspersoft.studio.data.wizard.AbstractDataAdapterWizard$3.runOperations(AbstractDataAdapterWizard.java:162)

at com.jaspersoft.studio.utils.jobs.CheckedRunnableWithProgress$1.run(CheckedRunnableWithProgress.java:59)

at java.lang.Thread.run(Thread.java:745)

 

please help me! 

 

att. Fabiano

Brasil