Error: NoClassDefFoundError: org/apache/commons/logging/LogFactory

Question

我收到下一个错误：

Exception in thread "main" java.lang.NoClassDefFoundError: org/apache/commons/logging/LogFactory at org.apache.http.conn.ssl.DefaultHostnameVerifier.(DefaultHostnameVerifier.java:82) at org.apache.http.impl.client.HttpClientBuilder.build(HttpClientBuilder.java:955) at Main.main(Main.java:87) Caused by: java.lang.ClassNotFoundException: org.apache.commons.logging.LogFactory at java.net.URLClassLoader.findClass(URLClassLoader.java:381) at java.lang.ClassLoader.loadClass(ClassLoader.java:424) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:338) at java.lang.ClassLoader.loadClass(ClassLoader.java:357) ... 3 more

我使用 intellij idea 并导入了 2 个库：httpclient-4.5.5.jar 和 httpcore-4.4.9.jar

我的所有库 class:

import org.apache.http.HttpHost;
import org.apache.http.HttpResponse;
import org.apache.http.client.HttpClient;
import org.apache.http.client.methods.HttpPost;
import org.apache.http.entity.StringEntity;
import org.apache.http.impl.client.HttpClientBuilder;

和代码示例：

    String urlToSendRequest = Constants.HOST + Constants.URL;
    String targetDomain = Constants.DOMAIN;

    HttpClient httpClient = HttpClientBuilder.create().build();
    HttpHost targetHost = new HttpHost(targetDomain, 80, "http");

    HttpPost httpPost = new HttpPost(urlToSendRequest);

    httpPost.addHeader("SENDCODE", "UTF-8");
    //...

    StringEntity entity = new StringEntity(Constants.MSG, "UTF-8");
    entity.setContentType("application/xml");
    httpPost.setEntity(entity);

    HttpResponse response = httpClient.execute(httpPost);

我几乎可以肯定问题出在库导入上，但我不确定也不知道如何解决它。

Answer 1

请下载commons-loggingjar文件并设置路径。

http://commons.apache.org/proper/commons-logging/download_logging.cgi

Answer 2

请在您的项目中包含公共日志记录 jar。可以从here

下载

也来自Maven repository

Answer 3

您似乎缺少 commons-logging 库。

Error: NoClassDefFoundError: org/apache/commons/logging/LogFactory

Error: NoClassDefFoundError: org/apache/commons/logging/LogFactory

java

apache

apache-httpclient-4.x