httpclient jar冲突。如何解决？ [英] httpclient jar conflicts.How to fix it?

问题描述

//这是我的代码，我在代理后工作...

//This is my code and i am working behind proxy ...

import org.apache.commons.io.IOUtils;
import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpGet;
import org.apache.http.impl.client.DefaultHttpClient;
import org.apache.http.impl.client.HttpClients;
import org.apache.http.impl.conn.DefaultProxyRoutePlanner;

{
HttpHost proxy = new HttpHost("proxyhost", 8082); 
DefaultProxyRoutePlanner routePlanner = new DefaultProxyRoutePlanner(proxy);
HttpClient client = HttpClients.custom().setRoutePlanner(routePlanner).build();
HttpResponse response = client.execute(request);}

//关注错误出现在我的控制台上

 Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/http/ssl/SSLContexts
    at org.apache.http.impl.client.HttpClientBuilder.build(HttpClientBuilder.java:966)
    at TwitterFeeds.main(TwitterFeeds.java:40)
    Caused by: java.lang.ClassNotFoundException: org.apache.http.ssl.SSLContexts
    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)
    ... 2 more

我是使用以下罐子

httpclient-4.5.2.jar
httpcore-4.3.jar

推荐答案

SSLContexts 类已经重新定位到httpclient 4.4中的另一个包。

The SSLContexts class has been relocated to another package in httpclient 4.4.

自4.4以来

Since 4.4

升级你的httpcore版本至少4.4来修复它。

Upgrade your httpcore version to at least 4.4 to fix that.

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