Sorry for bothering you all. It was simple. I forgot to copy those
libs into WEB-INF/lib. I have only did Build-Path...
soichi
On 5月27日, 午後3:31, soujiro0725 <soujiro0...@gmail.com> wrote:
> hi I am trying to make a Twitter bot that produces titles of blog
> entries. Since I am not good at Java, the problem might be in
> understanding of Java itself.
>
> I keep getting an error message "java.lang.NoClassDefFoundError: com/
> google/gdata/util/ServiceException", and I have searched the web for
> information. But all I found was the lack of libs, such as mail.jar ,
> google.collect...jar . I tried to include all possible libs, but no
> change at all.
>
> Could anyone help me out?
>
> //---- servlet that produces
> tweets-------------------------------------------------
> public class Twitter_botServlet extends HttpServlet {
>
> private static final Logger log =
> Logger.getLogger(Twitter_botServlet.class.getName());
> private String botname = "new_public_line";
> private String cachedtoken = "access_token";
> private String cachedsecret = "access_secret";
>
> public void doGet(HttpServletRequest req, HttpServletResponse resp)
> throws IOException {
> resp.setContentType("text/plain");
> resp.setCharacterEncoding("utf-8");
> resp.getWriter().println("Hello, world");
>
> log.info("info test");
> PersistenceManager pm = PMF.get().getPersistenceManager();
> Cache cache = null;
>
> try {
> CacheFactory cacheFactory =
> CacheManager.getInstance().getCacheFactory();
> cache =
> cacheFactory.createCache(Collections.emptyMap());
> } catch (CacheException e) {
> log.info(e.getMessage());
> }
>
> if((String)cache.get(cachedtoken) == null ||
> (String)cache.get(cachedsecret) == null){
> Query query = pm.newQuery(Token.class);
> List<Token> tokens = (List<Token>)query.execute();
>
> for(Token token:tokens){
> if(token !=null &&
> token.getBotName().equals(botname)){
> cache.put(cachedtoken,
> token.getAccessToken());
> cache.put(cachedsecret,
> token.getAccessSecret());
> }
> }
> pm.close();
> }
> GenerateInputs(cache);
> }
>
> private void GenerateInputs(Cache cache) {
> Twitter twitter = new
> TwitterFactory().getOAuthAuthorizedInstance(new
> AccessToken((String)cache.get(cachedtoken),
> (String)cache.get(cachedsecret)));
>
> String title = new
> GetBlogEntriesServlet().ReturnInfo();
> try {
> twitter.updateStatus(title);
> } catch (TwitterException e) {
> System.out.println(e.getMessage());
> }
> }}
>
> //--- tweet servlet ends here -----
>
> //--- servlet that gets a blog title-----
> public class GetBlogEntriesServlet extends HttpServlet {
> public String ReturnInfo() {
> String blogId = "xxxxxxxxxxxx";
> String title = null;
> try {
> GoogleService myService = new GoogleService("blogger",
> "twitter_bot");
> title = printAllPosts(myService, blogId);
> } catch (ServiceException e) {
> System.out.println(e.getMessage());
> } catch (IOException e) {
> System.out.println(e.getMessage());
> }
>
> return title;
> }
>
> private static String printAllPosts(GoogleService myService,
> String blogId) throws ServiceException, IOException {
>
> final URL feedUrl = new URL("http://www.blogger.com/feeds/"; +
> blogId
> + "/posts/default");
> Feed resultFeed = myService.getFeed(feedUrl, Feed.class);
>
> //define array that contains entry titles
> String[] ArrayTitle;
> ArrayTitle = new String[resultFeed.getEntries().size()];
>
> System.out.println(resultFeed.getTitle().getPlainText());
> for (int i = 0; i < resultFeed.getEntries().size(); i++) {
> Entry entry = resultFeed.getEntries().get(i);
> ArrayTitle[i] = entry.getTitle().getPlainText();
> }
>
> //get one of blog titles using a random number
> Random rnd = new Random();
> int ran = rnd.nextInt(resultFeed.getEntries().size());
> return ArrayTitle[ran];
> }}
>
> //------ code ends
> here------------------------------------------------------
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