请帮忙 = 找到了 twitter4j.User 接口，但 GAE/J 上需要类
我正在使用 twitter4j-core-2.1.2.jar。
以下是我在回调 url 命中后执行的代码。
代码
String token = (String) session.getAttribute("token");
String tokenSecret = (String)session.getAttribute("tokenSecret");
AccessToken accessToken = new AccessToken(token, tokenSecret);
Twitter twitter = new
TwitterFactory().getOAuthAuthorizedInstance(CONSUMER_KEY,CONSUMER_SECRET,accessToken);
// getting exception on this line.
User user = twitter.verifyCredentials();
以下是例外
java.lang.InknownClassChangeError：找到接口 twitter4j.User，但需要类 在 com.thefollowfriday.servlet.HomeServlet.doGet(HomeServlet.java:62) 在 javax.servlet.http.HttpServlet.service(HttpServlet.java:693) 在 javax.servlet.http.HttpServlet.service(HttpServlet.java:806) 在 org.mortbay.jetty.servlet.ServletHolder.handle（ServletHolder.java:511） 原因：TwitterException{statusCode=401，retryAfter=0， rateLimitStatus=null} 在 twitter4j.internal.http.HttpClientImpl.request(HttpClientImpl.java: 第301章） twitter4j.internal.http.HttpClientWrapper.request(HttpClientWrapper.java: 68) 在 twitter4j.internal.http.HttpClientWrapper.get(HttpClientWrapper.java: 90) 在 twitter4j.Twitter.verifyCredentials(Twitter.java:1134) com.thefollowfriday.servlet.HomeServlet.doGet(HomeServlet.java:68) 在 javax.servlet.http.HttpServlet.service(HttpServlet.java:693) 在 javax.servlet.http.HttpServlet.service(HttpServlet.java:806) at
请帮忙。我被困住了。
I am using twitter4j-core-2.1.2.jar.
Following is my code which executed after callback url hit.
Code
String token = (String) session.getAttribute("token");
String tokenSecret = (String)session.getAttribute("tokenSecret");
AccessToken accessToken = new AccessToken(token, tokenSecret);
Twitter twitter = new
TwitterFactory().getOAuthAuthorizedInstance(CONSUMER_KEY,CONSUMER_SECRET,accessToken);
// getting exception on this line.
User user = twitter.verifyCredentials();
Follwowing is the exception
java.lang.IncompatibleClassChangeError: Found interface twitter4j.User, but class was expected
at com.thefollowfriday.servlet.HomeServlet.doGet(HomeServlet.java:62)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:693)
at javax.servlet.http.HttpServlet.service(HttpServlet.java:806)
at org.mortbay.jetty.servlet.ServletHolder.handle(ServletHolder.java:511)
Reason: TwitterException{statusCode=401, retryAfter=0,
rateLimitStatus=null} at
twitter4j.internal.http.HttpClientImpl.request(HttpClientImpl.java:
301) at
twitter4j.internal.http.HttpClientWrapper.request(HttpClientWrapper.java:
68) at
twitter4j.internal.http.HttpClientWrapper.get(HttpClientWrapper.java:
90) at twitter4j.Twitter.verifyCredentials(Twitter.java:1134) at
com.thefollowfriday.servlet.HomeServlet.doGet(HomeServlet.java:68) at
javax.servlet.http.HttpServlet.service(HttpServlet.java:693) at
javax.servlet.http.HttpServlet.service(HttpServlet.java:806) at
Please help. I am stuck on it.
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状态代码 401 通常表示 Twitter 服务器上的凭据有问题，在这种情况下，服务器正在尝试使用提供的凭据验证用户。您确定您传递的所有值都是有效值（令牌或 tokenSecret 可能不为空）？
Status code 401 typically indicates a problem with credentials on the Twitter server, in this case while the server is trying to verify the user using the supplied credentials. Are you sure all the values you're passing are valid values (token or tokenSecret aren't null perhaps)?
我刚刚遇到这个问题。问题是我的 WEB-INF/lib 文件夹中有两个不同的 Twitter4J 库 jar。我删除了一个，重新启动，一切正常。
I just ran into this problem. The issue was that I had two different Twitter4J library jars in my WEB-INF/lib folder. I removed one, restarted, and everything worked.