问题描述
我收到以下错误：
Exception in thread "main" java.lang.NoSuchMethodError: com.google.common.collect.ImmutableSet.of([Ljava/lang/Object;)Lcom/google/common/collect/ImmutableSet;
at com.google.gdata.wireformats.AltFormat$Builder.setAcceptableTypes(AltFormat.java:399)
at com.google.gdata.wireformats.AltFormat$Builder.setAcceptableXmlTypes(AltFormat.java:387)
at com.google.gdata.wireformats.AltFormat.<clinit>(AltFormat.java:49)
at com.google.gdata.client.Service.<clinit>(Service.java:558)
at testproject.TestProject.run(TestProject.java:22)
at testproject.TestProject.main(TestProject.java:31)
Java Result: 1
BUILD SUCCESSFUL (total time: 0 seconds)
这来自以下代码：
package testproject;
import com.google.gdata.client.youtube.YouTubeService;
import com.google.gdata.util.*;
import java.util.logging.*;
public class TestProject {
public static void main(String[] args) {
try {
YouTubeService service = new YouTubeService("Test", "developerKey");
service.setUserCredentials("root@gmail.com", "pa$$word");
} catch (AuthenticationException ex) {
Logger.getLogger(TestProject.class.getName()).log(Level.SEVERE, null, ex);
}
}
}
首先，我包括每一个也导入了比我需要的更多。
我已经删除了我认为不必要的库（感谢）。所以我目前包含的库是以下库：
At first, I included every library in http://code.google.com/p/gdata-java-client/downloads/list and also imported much more than I needed to.I've since removed the libraries I deemed unnecessary (thanks thinksteep). So the libraries I'm currently including are the following libraries:
mail.jar
activation.jar
ant.jar
gdata-core-1.0.jar
gdata-media-1.0.jar
guava-11.0.1.jar
gdata-youtube-2.0.jar
gdata-youtube-met-2.0.jar
（可能有一些库是没有必要...但我现在已经结束了......）
我只是想测试获得YouTube服务，这样我就可以了解这个项目，但没有骰子。哦，我还包括这个库：因为在我收到NoClassDefFound错误之前并且包含该库似乎解决了它。提前谢谢你的帮助！
哦，我还在gdata 。我的测试版本在最后成功了...再次感谢！
(There are probably a few libraries there which are not necessary... But I'm at my whit's end...)I'm just trying to test getting a YouTube service so I can get things going on this project, but no dice. Oh, and I've also included this library: http://code.google.com/p/guava-libraries because before I was getting a NoClassDefFound error and including that library seemed to solve it. Thank you in advance for the help!Oh, and I also followed every step exactly (or at least I think so) in the gdata getting started guide. My test build was successful by the end... Thanks again!
推荐答案
添加超过要求的内容也可能导致问题。 java.lang.NoSuchMethodError 错误通常发生在运行时无法找到具有精确签名的必需方法的情况下。可能的原因是：
Adding more than required may cause issue too. java.lang.NoSuchMethodError error typically happens in case where runtime couldn't find required method with exact signature. Possible causes are:
1) There might be mulitple jars with same code, which may cause wrong class get loaded.
2) Incompatable version of jar, the jar you have in classpath might be older version/newer version.
确保没有发生这种情况。
Make sure none of those cases happening.
这篇关于NoSuchMethod获取gdata服务时出错的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！