我的程序包含以下行,此时只是挂起,我不太清楚为什么。
PoolingHttpClientConnectionManager connectionManager = new PoolingHttpClientConnectionManager();
在 Eclipse 中调试时,如果我尝试在显示视图中评估“new PoolingHttpClientConnectionManager()”,我会收到以下错误:
java.lang.NoClassDefFoundError: org/apache/http/config/Lookup
at java.lang.Class.forName0(Native Method)
at java.lang.Class.forName(Unknown Source)
...omitted - referring to specific lines in code...
at java.util.concurrent.FutureTask$Sync.innerRun(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: java.lang.ClassNotFoundException: org.apache.http.config.Lookup
at java.net.URLClassLoader$1.run(Unknown Source)
at java.net.URLClassLoader$1.run(Unknown Source)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
at sun.misc.Launcher$AppClassLoader.loadClass(Unknown Source)
at java.lang.ClassLoader.loadClass(Unknown Source)
... 10 more
我正在使用来自 org.apache.httpcomponents 的 httpclient.jar 版本 4.3.1。
其他人遇到这个问题吗?有什么解决办法吗?还是我在做一些傻事?