java - NPE when obtaining KeyStore instance -


i have simple code working while back. trying keystore instance can use enable ssl. problem null pointer exception below , can't seem find solution anywhere. use openjdk 8 on ubuntu 15.04 32 bit.

//do other initializations things ... keystore ks = keystore.getinstance("pkcs12"); keystore ts = keystore.getinstance("pkcs12");  char[] keymanagerpassphrase = keymanagerpassphrasestring.tochararray(); char[] keystorepassphrase = keystorepassphrasestring.tochararray(); char[] truststorepassphrase = truststorepassphrasestring.tochararray();  ks.load(new fileinputstream(keystorefile), keystorepassphrase);  keymanagerfactory kmf = keymanagerfactory.getinstance("sunx509"); kmf.init(ks, keymanagerpassphrase);  trustmanager[] trustmanagers = null;     if( usecustomtruststore ) {          ts.load(new fileinputstream(truststorefile), truststorepassphrase);           trustmanagerfactory tmf = trustmanagerfactory.getinstance("sunx509");             tmf.init(ts);           trustmanagers = tmf.gettrustmanagers();         }         sslcontext sslcontext = sslcontext.getinstance(protocal);          sslcontext.init(kmf.getkeymanagers(), trustmanagers , null);          return sslcontext.createsslengine();

the exception thrown is:

caused by: java.lang.nullpointerexception @ java.security.provider$servicekey.<init>(provider.java:872) @ java.security.provider$servicekey.<init>(provider.java:865) @ java.security.provider.getservice(provider.java:1039) @ sun.security.jca.providerlist.getservice(providerlist.java:332) @ sun.security.jca.getinstance.getinstance(getinstance.java:157) @ java.security.security.getimpl(security.java:695) @ java.security.keystore.getinstance(keystore.java:848)

how can proceed?

this q's little old near top of google results problem, i'll try help.

to debug npe in java's codebase, need make sure have java source code available in ide; can check hint on null. seem using jdk 8, it's line:

algorithm = algorithm.touppercase(english);

plus, there's nothing else in servicekey init method (constructor) cause npe. so... string algorithm parameter come from, passed constructor?

it looks it's passed through of these layers; see at java.security.security.getimpl(security.java:695) -- algorithm first param passed in there.

unwrap 1 more: at java.security.keystore.getinstance(keystore.java:848) -- param pass in here called "type", that's what's passed security.getimpl algorithm.

so bug you're passing null type param when call keystore.getinstance(). doesn't seem match source code listed, may not have compiled code properly. add in "sanity check" -- e.g., println earlier in code; , see line number in your code indicated further down stack trace.


Comments

Post a Comment

Popular posts from this blog

user interface - how to replace an ongoing process of image capture from another process call over the same ImageLabel in python's GUI TKinter -

i trying use following code create interactive gui changes color-space(hsv, rbg, grayscale etc) on event of button click. display opencv video in tkinter using multiprocessing being new python having problems multiprocessing , attempts on making gui change it's color space on button clicks hangs entire system. on it's implementation highly appreciated. thankyou. below code: import cv2 pil import image,imagetk import tkinter tk import numpy np multiprocessing import process , queue def quit_it(root,process): root.destroy() process.terminate() def black_andwhite(root,process): process.terminate p=process(target=capture_image, args=(5,queue, )) p.start() root.after(0, func=lambda: update_all(root, image_label, queue)) def update_image(image_label, queue): frame = queue.get() = image.fromarray(frame) b = imagetk.photoimage(image=a) image_label.configure(image=b) image_label._image_cache = b root.update() def update_all(root...
Read more

javascript - Restarting Supervisor and effect on FlaskSocketIO -

in index.html (html/javascript) have: $(document).ready(function(){ namespace = '/test'; var socket = io.connect('http://' + document.domain + ':' + location.port + namespace); socket.on('connect', function() { socket.emit('join', {room: 'venue_1'}); }); socket.on('my response', function(msg) { $('#log').append('<br>received #' + ': ' + msg.data); }); }); on server have: @socketio.on('connect', namespace='/test') def test_connect(): if session.get('venue_id'): emit('my response', {'data': 'connected'}) session.pop('venue_id', none) else: request.namespace.disconnect() @socketio.on('join', namespace='/test') def join(message): join_room(message['room']) room = message[...
Read more

php - Mongodb connectivity error -

<?php /** * connects mongodb server. * stops code execution on`enter code here` connection error. * * not need use file, place globally assign mongodb instance $db. * * define constants in config or here */ define('mdb_username', 'root'); define('mdb_password', 'asd'); define('mdb_host', 'localhost:80'); define('mdb_name', 'abc'); if (!class_exists('mongo')) { die("mongo class not existing. did install php mongodb extension?"); } try { $conn = new mongoclient("mongodb://".mdb_username.":".mdb_password."@".mdb_host."/".mdb_name); $conn->authenticate('root','gynadfehurbo'); $db = $conn->selectdb(mdb_name); } catch (mongoconnectionexception $e) { die($e->getmessage()); // in production might want turn off. } mongodb connectivity problem. while trying connect mongodb php got authentication problem .....
Read more