java.lang.NoClassDefFoundError：org / apache / http / concurrent / FutureCallback

Question

我正在尝试使用Unirest-Mashape来构建java应用程序。

这是我的代码：

import com.mashape.unirest.http.*;
public class PAskMe
{
  public static void main(String args[]) throws Exception
  {
        HttpResponse<JsonNode> response = Unirest.get("https://montanaflynn-dictionary.p.mashape.com/define?word=irony").
                                                                                header("X-Mashape-Key", "KEY").
                                                                                asJson();
        System.out.println(response.toString());
  }
}

编译代码时，它没有显示任何错误。但是当我运行它时，它会显示以下运行时错误：

java.lang.NoClassDefFoundError: org/apache/http/concurrent/FutureCallback
at com.mashape.unirest.request.BaseRequest.asJson(BaseRequest.java:68)
at PAskMe.PAskMe.main(PAskMe.java:14)
at PAskMe.__SHELL0.run(__SHELL0.java:6)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:601)
at bluej.runtime.ExecServer$3.run(ExecServer.java:725)

Caused by: java.lang.ClassNotFoundException: org.apache.http.concurrent.FutureCallback
at java.net.URLClassLoader$1.run(URLClassLoader.java:366)
at java.net.URLClassLoader$1.run(URLClassLoader.java:355)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:354)
at java.lang.ClassLoader.loadClass(ClassLoader.java:423)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:308)
at java.lang.ClassLoader.loadClass(ClassLoader.java:356)
... 8 more

我已将这些罐子包含在我的项目中：

但我仍然得到错误。请帮帮我。

Answer 1

下载httpcore-4.2.3.jar并将其添加到您的类路径中。

Answer 2

.jar文件缺少httpcore-4.2.3.jar

从http://mvnrepository.com/artifact/org.apache.httpcomponents/httpcore/4.0-alpha6下载

Answer 3

与httpcore-4.4.12.jar一起，您还需要添加以下依赖项以避免运行时错误

httpclient-4.5.6.jar

httpmime-4.5.6.jar

还请确保所有依赖项相互兼容