java.lang.NoClassDefFoundError: org/apache/http/conn/scheme/SchemeSocketFactory

我尝试通过 AWS 凭证发送邮件，但出现异常

java.lang.NoClassDefFoundError: org/apache/http/conn/scheme/SchemeSocketFactory

我添加了这些罐子：

• aws-java-sdk-1.3.11.jar
• aws-java-sdk-1.3.11-javadoc.jar
• aws-java-sdk-1.3.11-sources.jar
• aws-java-sdk-flow-build-tools-1.3.11.jar
• commons-logging.jar
• httpclient-4.0-alpha4.jar
• httpcore-4.0-alpha6.jar
• log4j-1.2.13.jar
• mail.jar

我的java代码是-

 import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.services.simpleemail.AmazonSimpleEmailServiceClient;
import com.amazonaws.services.simpleemail.model.*;
import java.util.LinkedList;

public class SESExample {
public static final String ACCESS_KEY = "My Access";
public static final String SECRET_KEY = "My Secret";

public static void main(String args[]) {
    String sender = "[email protected]"; // should be verified email

    LinkedList<String> recipients = new LinkedList<String>();
    recipients.add("[email protected]"); // again a verified email, if you are in sandbox

    SendMail(sender, recipients, "Hi", "Hi how are u?");
}

public static void SendMail(String sender, LinkedList<String> recipients, String subject, String body) {
    Destination destination = new Destination(recipients);

    Content subjectContent = new Content(subject);
    Content bodyContent = new Content(body);
    Body msgBody = new Body(bodyContent);
    Message msg = new Message(subjectContent, msgBody);

    SendEmailRequest request = new SendEmailRequest(sender, destination, msg);

    AWSCredentials credentials = new BasicAWSCredentials(ACCESS_KEY, SECRET_KEY);
    AmazonSimpleEmailServiceClient sesClient = new AmazonSimpleEmailServiceClient(credentials);
    SendEmailResult result = sesClient.sendEmail(request);

    System.out.println(result);
}

}

我也在尝试搜索这个罐子但没有找到。 我不确定是否使用了错误的罐子。 谁能告诉我出了什么问题吗？

I am

来自javadocs, the SchemeSocketFactory类仅从 4.1 版本开始可用。所以这可能与您使用 4.0 alpha jars 有关。尝试将您的 http-client 库升级到 4.1 或更高版本。