Question

我们有Goole App Engine Java项目使用Plivo（短信，电话呼叫平台）发送短信。它使用 Plivo Java Library 发送短信。当我尝试发送短信时，我得到NoClassDefFoundError例外

java.lang.NoClassDefFoundError: javax.naming.ldap.LdapName is a restricted class. Please see the Google  App Engine developer's guide for more details.
    at com.google.appengine.tools.development.agent.runtime.Runtime.reject(Runtime.java:51)
    at org.apache.http.conn.ssl.AbstractVerifier.extractCNs(AbstractVerifier.java:277)
    at org.apache.http.conn.ssl.AbstractVerifier.getCNs(AbstractVerifier.java:265)
    at org.apache.http.conn.ssl.AbstractVerifier.verify(AbstractVerifier.java:157)
    at org.apache.http.conn.ssl.AbstractVerifier.verify(AbstractVerifier.java:140)
    at org.apache.http.conn.ssl.SSLSocketFactory.verifyHostname(SSLSocketFactory.java:561)
    at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:536)
    at org.apache.http.conn.ssl.SSLSocketFactory.connectSocket(SSLSocketFactory.java:403)
    at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:177)
    at org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedClientConnectionImpl.java:304)
    at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:611)
    at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:446)
    at org.apache.http.impl.client.AbstractHttpClient.doExecute(AbstractHttpClient.java:863)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:82)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:106)
    at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:57)
    at com.plivo.helper.api.client.RestAPI.request(RestAPI.java:106)

如何解决此问题？

Answer 1

您可能知道，App Engine在沙盒环境中运行，因此某些类不可用。 whitelist页面会告诉您可以使用哪些课程。

如果您需要使用此特定的第三方库，您可以在计算引擎上运行应用程序的相关部分，或查看Managed VMs，它们没有相同的限制作为App Engine上的常规Java模块。缺点是您不享有相同的自动扩展特性，托管虚拟机仍处于预览状态。

NoClassDefFoundError：javax.naming.ldap.LdapName是GAE中的受限类

1 个答案: