Question

我复制了Java Toolkit for Rally Rest页面底部的“说明如何查询前5个最高优先级缺陷”的代码示例。

我相应地更改了用户名和密码，但我收到了UnknownHostException。

这是stacktrace：

log4j:WARN No appenders could be found for logger (org.apache.http.impl.conn.BasicClientConnectionManager). log4j:WARN Please initialize the log4j system properly. Exception in thread "main" java.net.UnknownHostException: rally1.rallydev.com at java.net.Inet6AddressImpl.lookupAllHostAddr(Native Method) at java.net.InetAddress$1.lookupAllHostAddr(InetAddress.java:849) at java.net.InetAddress.getAddressFromNameService(InetAddress.java:1202) at java.net.InetAddress.getAllByName0(InetAddress.java:1153) at java.net.InetAddress.getAllByName(InetAddress.java:1083) at java.net.InetAddress.getAllByName(InetAddress.java:1019) at org.apache.http.impl.conn.SystemDefaultDnsResolver.resolve(SystemDefaultDnsResolver.java:45) at org.apache.http.impl.conn.DefaultClientConnectionOperator.resolveHostname(DefaultClientConnectionOperator.java:278) at org.apache.http.impl.conn.DefaultClientConnectionOperator.openConnection(DefaultClientConnectionOperator.java:162) at org.apache.http.impl.conn.ManagedClientConnectionImpl.open(ManagedClientConnectionImpl.java:294) at org.apache.http.impl.client.DefaultRequestDirector.tryConnect(DefaultRequestDirector.java:640) at org.apache.http.impl.client.DefaultRequestDirector.execute(DefaultRequestDirector.java:479) at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:906) at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:805) at org.apache.http.impl.client.AbstractHttpClient.execute(AbstractHttpClient.java:784) at com.rallydev.rest.RallyRestApi.doRequest(RallyRestApi.java:253) at com.rallydev.rest.RallyRestApi.doGet(RallyRestApi.java:323) at com.rallydev.rest.RallyRestApi.query(RallyRestApi.java:179) at com.jdes.AgileToRally.AgileToRally.main(AgileToRally.java:37)

第37行：QueryResponse queryResponse = restApi.query(defects);

我尝试过更改服务器名称，用户名和密码，但我没有运气。

由于

Answer 1

查看堆栈跟踪，看起来您的计算机正在尝试查找rally1.rallydev.com的IPV6地址，并且它失败了，因为它没有（然后没有回退到IPV4）。这表明您的计算机配置（或它使用的DNS服务器）的问题不仅仅是Java中的问题。

话虽这么说，你可以强迫JVM选择IPV4来解决你的问题：

prompt> java -Djava.net.preferIPv4Stack=true ...

如果您正在使用IDE，则需要将其配置为在运行程序时将-Djava.net.preferIPv4Stack=true传递给java。

Answer 2

看起来你有一个代理服务器。

restApi.setProxy(new URI(proxyserver));

拉力赛Java Rest Unknownhostexception

2 个答案: