Docker-client Java API：服务器无法响应有效的HTTP响应

Question

管理解决我昨天发布的Java客户端库无法连接到我的守护程序的问题，但现在我遇到了一个新问题，我无法找到有关在线的任何信息。

我在Win7 64位上运行了Boot2Docker v1.6 Windows安装程序。 我可以运行docker命令就好了。 然后我从https://github.com/spotify/docker-client中提取了最新的Docker-client主分支（v2.7.22）并在Eclipse Java IDE中运行它。 在DefaultDockerClient中，我将DEFAULT_HOST和DEFAULT_PORT更改为Docker似乎使用的值https://docs.docker.com/installation/images/windows-boot2docker-cmd.png （默认值给我localhost：2375连接被拒绝错误）。

我尝试运行以下命令：

final DockerClient docker = DefaultDockerClient.fromEnv().build();
List results = docker.searchImages("ubuntu");

我的结果是Apache错误：

 Exception in thread "main" com.spotify.docker.client.DockerException: java.util.concurrent.ExecutionException: javax.ws.rs.ProcessingException: org.apache.http.client.ClientProtocolException
at com.spotify.docker.client.DefaultDockerClient.propagate(DefaultDockerClient.java:1109)
at com.spotify.docker.client.DefaultDockerClient.request(DefaultDockerClient.java:1028)
at com.spotify.docker.client.DefaultDockerClient.searchImages(DefaultDockerClient.java:653)
at com.spotify.docker.client.main.Test.main(Test.java:28)
Caused by: java.util.concurrent.ExecutionException: javax.ws.rs.ProcessingException: org.apache.http.client.ClientProtocolException
at jersey.repackaged.com.google.common.util.concurrent.AbstractFuture$Sync.getValue(AbstractFuture.java:306)
at jersey.repackaged.com.google.common.util.concurrent.AbstractFuture$Sync.get(AbstractFuture.java:293)
at jersey.repackaged.com.google.common.util.concurrent.AbstractFuture.get(AbstractFuture.java:116)
at com.spotify.docker.client.DefaultDockerClient.request(DefaultDockerClient.java:1026)
... 2 more
Caused by: javax.ws.rs.ProcessingException: org.apache.http.client.ClientProtocolException
at org.glassfish.jersey.apache.connector.ApacheConnector.apply(ApacheConnector.java:517)
at org.glassfish.jersey.apache.connector.ApacheConnector$1.run(ApacheConnector.java:527)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at jersey.repackaged.com.google.common.util.concurrent.MoreExecutors$SameThreadExecutorService.execute(MoreExecutors.java:293)
at jersey.repackaged.com.google.common.util.concurrent.AbstractListeningExecutorService.submit(AbstractListeningExecutorService.java:49)
at jersey.repackaged.com.google.common.util.concurrent.AbstractListeningExecutorService.submit(AbstractListeningExecutorService.java:45)
at org.glassfish.jersey.apache.connector.ApacheConnector.apply(ApacheConnector.java:523)
at org.glassfish.jersey.client.ClientRuntime$1.run(ClientRuntime.java:169)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:271)
at org.glassfish.jersey.internal.Errors$1.call(Errors.java:267)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:267)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:320)
at org.glassfish.jersey.client.ClientRuntime$2.run(ClientRuntime.java:201)
at java.util.concurrent.Executors$RunnableAdapter.call(Unknown Source)
at java.util.concurrent.FutureTask.run(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
at java.lang.Thread.run(Unknown Source)
Caused by: org.apache.http.client.ClientProtocolException
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:186)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:72)
at org.glassfish.jersey.apache.connector.ApacheConnector.apply(ApacheConnector.java:469)
... 20 more
Caused by: org.apache.http.ProtocolException: The server failed to respond with a valid HTTP response
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:151)
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:57)
at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:260)
at org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:161)
at org.apache.http.impl.conn.CPoolProxy.receiveResponseHeader(CPoolProxy.java:153)
at org.apache.http.protocol.HttpRequestExecutor.doReceiveResponse(HttpRequestExecutor.java:271)
at org.apache.http.protocol.HttpRequestExecutor.execute(HttpRequestExecutor.java:123)
at org.apache.http.impl.execchain.MainClientExec.execute(MainClientExec.java:254)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:195)
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:86)
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:184)
... 22 more

有谁知道如何读取HTTP消息/ Apache库存储日志的位置？ 我也尝试使用v2.7.21客户端版本，但我有同样的错误。

任何想法如何解决或在这里的任何其他人也使用相同的库与boot2docker Windows安装程序结合？ 我正在寻找使用此库的人的建议

Answer 1

我猜你没有设置你的DOCKER_CERT_PATH环境变量，因为我能够通过在DOCKER_CERT_PATH我自己的DOCKER_CERT_PATH之后运行这两行来重现你的异常。

如果正确设置了DOCKER_HOST环境变量，也可能避免出现“连接被拒绝”错误。 同样，我可以通过DOCKER_HOST我自己的DOCKER_HOST变量来重现。

您需要为这些环境变量设置的值通常显示在boot2docker init命令的末尾，如https://docs.docker.com/installation/mac/所述 。 您还可以通过运行boot2docker shellinit再次查看它们。

Answer 2

它在设置环境变量DOCKER_CERT_PATH和DOCKER_HOST后工作