1
I made a webservice with Java Jersey to send files, when I try to send files using an HTML form, it works, however, when I try to send from a client or in Postman, an error 500 is returned with nullpointer.
Uploadresource
@Path("/files")
@Produces(MediaType.APPLICATION_JSON)
@Consumes(MediaType.MULTIPART_FORM_DATA)
public class UploadResource {
@POST
@Path("/upload")
public Response uploadImagem(@FormDataParam("file") InputStream fileInputString, @FormDataParam("file") FormDataContentDisposition fileInputDetails) {
String saveFolder = System.getProperty("user.home") + "/CantinaRest/usuario/produtos/img/";
File dir = new File(saveFolder);
dir.mkdirs();
String fileLocation = saveFolder + fileInputDetails.getFileName();
try {
OutputStream out = new FileOutputStream(new File(fileLocation));
byte[] buffer = new byte[1024];
int bytes = 0;
long file_size = 0;
while ((bytes = fileInputString.read(buffer)) != -1) {
out.write(buffer, 0, bytes);
file_size += bytes;
}
out.flush();
out.close();
return new Response(1, "Imagem salva com sucesso: " + saveFolder);
} catch (IOException ex) {
ex.printStackTrace();
return new Response(0, "Erro: " + ex.getMessage());
}
}
}
The error that is returned by Postman and Android client:
java.lang.NullPointerException
br.com.mobileti.cantinarest.rest.UploadResource.uploadImagem(UploadResource.java:42)
sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
java.lang.reflect.Method.invoke(Method.java:498)
org.glassfish.jersey.server.model.internal.ResourceMethodInvocationHandlerFactory.lambda$static$0(ResourceMethodInvocationHandlerFactory.java:76)
org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher$1.run(AbstractJavaResourceMethodDispatcher.java:147)
org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.invoke(AbstractJavaResourceMethodDispatcher.java:190)
org.glassfish.jersey.server.model.internal.JavaResourceMethodDispatcherProvider$TypeOutInvoker.doDispatch(JavaResourceMethodDispatcherProvider.java:243)
org.glassfish.jersey.server.model.internal.AbstractJavaResourceMethodDispatcher.dispatch(AbstractJavaResourceMethodDispatcher.java:102)
org.glassfish.jersey.server.model.ResourceMethodInvoker.invoke(ResourceMethodInvoker.java:493)
org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:415)
org.glassfish.jersey.server.model.ResourceMethodInvoker.apply(ResourceMethodInvoker.java:104)
org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:277)
org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
org.glassfish.jersey.internal.Errors.process(Errors.java:315)
org.glassfish.jersey.internal.Errors.process(Errors.java:297)
org.glassfish.jersey.internal.Errors.process(Errors.java:267)
org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:289)
org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:256)
org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:703)
org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:416)
org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:370)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:389)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:342)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:229)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
Postman:
As is giving the same error in Postman and Android, so I believe it is not problem with Android, but with the webservice. the Error in line String fileLocation = saveFolder + fileInputDetails.getFileName();