我刚接触docker，想使用java api来打印我的docker信息。然后我在这个关于docker-java的链接中找到了Api。我发现我的boot2docker IP是196.168.59.103:2376。我使用了这个命令：
docker -H tcp://192.168.59.103:2376 version
它可以成功并向我展示这些信息：
它可以成功并向我展示这些信息：
Client version: 1.7.0
Client API version: 1.19
Go version (client): go1.4.2
Git commit (client): 0baf609
OS/Arch (client): darwin/amd64
Server version: 1.7.0
Server API version: 1.19
Go version (server): go1.4.2
Git commit (server): 0baf609
OS/Arch (server): linux/amd64
然后，我在Eclipse中新建了一个Maven项目，并运行了以下代码：
public static void main(String[] args) {
DockerClient dockerClient = DockerClientBuilder.getInstance("http://192.168.59.103:2376").build();
Info info = dockerClient.infoCmd().exec();
System.out.print(info);
}
但是它根本不起作用，并抛出了关于以下内容的异常：
The server failed to respond with a valid HTTP response
我使用curl命令进行连接：
curl -v http://192.168.59.103:2376/info
以下是展示给我的信息：
* Hostname was NOT found in DNS cache
* Trying 192.168.59.103...
* Connected to 192.168.59.103 (192.168.59.103) port 2376 (#0)
> GET /info HTTP/1.1
> User-Agent: curl/7.37.1
> Host: 192.168.59.103:2376
> Accept: */*
>
* Connection #0 to host 192.168.59.103 left intact
在这种情况下我该怎么办？我想使用它来显示一些Docker信息，并使用Java代码对Docker进行操作。更多的Java异常细节如下：
Exception in thread "main" javax.ws.rs.ProcessingException: org.apache.http.client.ClientProtocolException
at org.glassfish.jersey.apache.connector.ApacheConnector.apply(ApacheConnector.java:513)
at org.glassfish.jersey.client.ClientRuntime.invoke(ClientRuntime.java:246)
at org.glassfish.jersey.client.JerseyInvocation$2.call(JerseyInvocation.java:683)
at org.glassfish.jersey.internal.Errors.process(Errors.java:315)
at org.glassfish.jersey.internal.Errors.process(Errors.java:297)
at org.glassfish.jersey.internal.Errors.process(Errors.java:228)
at org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:424)
at org.glassfish.jersey.client.JerseyInvocation.invoke(JerseyInvocation.java:679)
at org.glassfish.jersey.client.JerseyInvocation$Builder.method(JerseyInvocation.java:408)
at org.glassfish.jersey.client.JerseyInvocation$Builder.get(JerseyInvocation.java:308)
at com.github.dockerjava.jaxrs.InfoCmdExec.execute(InfoCmdExec.java:26)
at com.github.dockerjava.jaxrs.InfoCmdExec.execute(InfoCmdExec.java:12)
at com.github.dockerjava.jaxrs.AbstrDockerCmdExec.exec(AbstrDockerCmdExec.java:57)
at com.github.dockerjava.core.command.AbstrDockerCmd.exec(AbstrDockerCmd.java:29)
at org.v11.dm.docker.Demo.main(Demo.java:15)
Caused by: org.apache.http.client.ClientProtocolException
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:188)
at org.apache.http.impl.client.CloseableHttpClient.execute(CloseableHttpClient.java:72)
at org.glassfish.jersey.apache.connector.ApacheConnector.apply(ApacheConnector.java:465)
... 14 more
Caused by: org.apache.http.ProtocolException: The server failed to respond with a valid HTTP response
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:151)
at org.apache.http.impl.conn.DefaultHttpResponseParser.parseHead(DefaultHttpResponseParser.java:57)
at org.apache.http.impl.io.AbstractMessageParser.parse(AbstractMessageParser.java:260)
at org.apache.http.impl.DefaultBHttpClientConnection.receiveResponseHeader(DefaultBHttpClientConnection.java:161)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:497)
at org.apache.http.impl.conn.CPoolProxy.invoke(CPoolProxy.java:138)
at com.sun.proxy.$Proxy19.receiveResponseHeader(Unknown Source)
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:253)
at org.apache.http.impl.execchain.ProtocolExec.execute(ProtocolExec.java:194)
at org.apache.http.impl.execchain.RetryExec.execute(RetryExec.java:85)
at org.apache.http.impl.execchain.RedirectExec.execute(RedirectExec.java:108)
at org.apache.http.impl.client.InternalHttpClient.doExecute(InternalHttpClient.java:186)
... 16 more