相关疑难解决方法(0)

每当我尝试通过 AWS SDK 发送邮件时，都会收到以下异常：

java.lang.NoSuchMethodError: org.apache.http.params.HttpConnectionParams.setSoKeepalive(Lorg/apache/http/params/HttpParams;Z)V

我在这里得到一个提示（https://github.com/aws/aws-sdk-java/issues/422）可能出了什么问题：显然 HttpClient 和 HttpCore 的版本之间存在一些冲突，但我无法弄清楚无论我尝试哪个版本。

.classpath文件的一部分：

<classpathentry kind="lib" path="lib/aws-java-sdk-1.10.69-javadoc.jar"/>
<classpathentry kind="lib" path="lib/aws-java-sdk-1.10.69-sources.jar"/>
<classpathentry kind="lib" path="lib/aws-java-sdk-1.10.69.jar"/>
<classpathentry kind="lib" path="lib/aws-java-sdk-flow-build-tools-1.10.69.jar"/>
<classpathentry kind="lib" path="lib/httpclient-4.3.6.jar"/>
<classpathentry kind="lib" path="lib/httpcore-4.3.3.jar"/>
<classpathentry kind="lib" path="lib/google-http-client-1.18.0-rc.jar"/>
<classpathentry kind="lib" path="lib/google-http-client-appengine-1.18.0-rc.jar"/>
<classpathentry kind="lib" path="lib/google-http-client-gson-1.18.0-rc.jar"/>
<classpathentry kind="lib" path="lib/google-http-client-jackson2-1.18.0-rc.jar"/>
<classpathentry kind="lib" path="lib/google-http-client-jdo-1.18.0-rc.jar"/>
<classpathentry kind="lib" path="lib/httpmime-4.1.3.jar"/

完整异常 printStack():

java.lang.NoSuchMethodError: org.apache.http.params.HttpConnectionParams.setSoKeepalive(Lorg/apache/http/params/HttpParams;Z)V
at com.amazonaws.http.HttpClientFactory.createHttpClient(HttpClientFactory.java:96) ~[aws-java-sdk-1.10.69.jar:?]
at com.amazonaws.http.AmazonHttpClient.<init>(AmazonHttpClient.java:187) ~[aws-java-sdk-1.10.69.jar:?]
at com.amazonaws.AmazonWebServiceClient.<init>(AmazonWebServiceClient.java:136) ~[aws-java-sdk-1.10.69.jar:?]
at com.amazonaws.AmazonWebServiceClient.<init>(AmazonWebServiceClient.java:120) ~[aws-java-sdk-1.10.69.jar:?]
at com.amazonaws.services.simpleemail.AmazonSimpleEmailServiceClient.<init>(AmazonSimpleEmailServiceClient.java:165) ~[aws-java-sdk-1.10.69.jar:?]
at com.amazonaws.services.simpleemail.AmazonSimpleEmailServiceClient.<init>(AmazonSimpleEmailServiceClient.java:145) ~[aws-java-sdk-1.10.69.jar:?]
at com.fieldoo.service.MailService.send(MailService.java:259) ~[classes/:?]
at com.fieldoo.service.MailService.checkAndSendQueue(MailService.java:222) ~[classes/:?]
at …