我们有一个启用了netconf的路由器，我可以使用Mg-Soft客户端浏览器执行get / get-config操作。这是getConfig（）的输出-
要求：
<nc:get-config xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0">
<nc:source>
<nc:running/>
</nc:source>
</nc:get-config>
RESP：
<?xml version="1.0" encoding="utf-8"?>
<data xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
<configure xmlns="urn:nokia.com:sros:ns:yang:sr:conf">
<qos>
<sap-ingress>
.....
</data>
但是我无法使用tailf Netconf客户端执行相同的操作。
这是我的代码-
public class Client {
public static void main(String args[]) throws JNCException,
ParserConfigurationException, SAXException, IOException {
DeviceUser deviceUser;
String deviceUserName = "user";
deviceUser = new DeviceUser(deviceUserName, "admin", "admin");
Device device = new Device("simulator", deviceUser, "10.135.16.13", 830);
device.connect(deviceUserName);
device.newSession(new Subscriber("simulator"), "mySession");
NetconfSession session = device.getSession("mySession");
NodeSet config = session.getConfig(NetconfSession.RUNNING);
String xmlString = config.toXMLString();
session.closeSession();
System.out.println(xmlString);
}
}
class Subscriber extends IOSubscriber {
String devName;
public static boolean rawMode = false;
Subscriber(String devName) {
super(rawMode);
this.devName = devName;
}
public void input(String data) {
System.out.println("RECV: " + data);
}
public void output(String data) {
System.out.println("SEND: " + data);
}
}
我在Eclipse控制台中收到以下内容-
SEND: <hello xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
<capabilities>
<capability>urn:ietf:params:netconf:base:1.0</capability>
</capabilities>
</hello>
RECV: <hello xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
<capabilities>
<capability>urn:ietf:params:netconf:base:1.0</capability>
<capability>urn:ietf:params:netconf:base:1.1</capability>
<capability>urn:ietf:params:netconf:capability:writable-running:1.0</capability>
<capability>urn:ietf:params:netconf:capability:candidate:1.0</capability>
<capability>urn:ietf:params:netconf:capability:validate:1.0</capability>
<capability>urn:ietf:params:netconf:capability:validate:1.1</capability>
<capability>urn:ietf:params:netconf:capability:startup:1.0</capability>
<capability>urn:ietf:params:netconf:capability:url:1.0?scheme=ftp,tftp,file</capability>
<capability>urn:ietf:params:netconf:capability:with-defaults:1.0?basic-mode=trim&also-supported=report-all</capability>
<capability>urn:ietf:params:xml:ns:netconf:base:1.0?module=ietf-netconf&revision=2011-06-01&features=writable-running,validate,startup,url&deviations=alu-netconf-deviations-r13</capability>
<capability>urn:alcatel-lucent.com:sros:ns:yang:netconf-deviations-r13?module=alu-netconf-deviations-r13&revision=2015-01-23</capability>
<capability>urn:alcatel-lucent.com:sros:ns:yang:cli-content-layer-r13?module=alu-cli-content-layer-r13&revision=2015-01-23</capability>
<capability>urn:alcatel-lucent.com:sros:ns:yang:conf-r13?module=alu-conf-r13&revision=2016-06-24</capability>
<capability>urn:alcatel-lucent.com:sros:ns:yang:conf-aaa-r13?module=alu-conf-aaa-r13&revision=2016-06-16</capability>
<capability>urn:alcatel-lucent.com:sros:ns:yang:conf-aa-r13?module=alu-conf-aa-r13&revision=2016-06-23</capability>
<capability>urn:alcatel-lucent.com:sros:ns:yang:conf-calltrace-r13?module=alu-conf-calltrace-r13&revision=2016-04-27</capability>
<capability>urn:alcatel-lucent.com:sros:ns:yang:conf-card-r13?module=alu-conf-card-r13&revision=2015-10-30</capability>
<capability>urn:alcatel-lucent.com:sros:ns:yang:conf-cflowd-r13?module=alu-conf-cflowd-r13&revision=2015-01-26</capability>
<capability>urn:alcatel-lucent.com:sros:ns:yang:conf-conn-prof-r13?module=alu-conf-conn-prof-r13&revision=2015-11-03</capability>
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<capability>urn:alcatel-lucent.com:sros:ns:yang:conf-oam-pm-r13?module=alu-conf-oam-pm-r13&revision=2015-11-03</capability>
<capability>urn:alcatel-lucent.com:sros:ns:yang:conf-open-flow-r13?module=alu-conf-open-flow-r13&revision=2015-11-03</capability>
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<capability>urn:alcatel-lucent.com:sros:ns:yang:conf-port-ethernet-r13?module=alu-conf-port-ethernet-r13&revision=2016-06-13</capability>
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<capability>urn:alcatel-lucent.com:sros:ns:yang:conf-python-r13?module=alu-conf-python-r13&revision=2016-06-20</capability>
<capability>urn:alcatel-lucent.com:sros:ns:yang:conf-qos-r13?module=alu-conf-qos-r13&revision=2016-04-13</capability>
<capability>urn:alcatel-lucent.com:sros:ns:yang:conf-redundancy-r13?module=alu-conf-redundancy-r13&revision=2016-03-25</capability>
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<session-id>52</session-id>
</hello>
SEND: <nc:rpc xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0" nc:message-id="1">
<nc:get-config>
<nc:source>
<nc:running/> </nc:source>
</nc:get-config>
</nc:rpc>
RECV: <?xml version="1.0" encoding="UTF-8"?>
<rpc-reply urn:ietf:params:xml:ns:netconf:base:1.0:message-id="1" xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0" xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
<rpc-error>
<error-type>rpc</error-type>
<error-tag>missing-attribute</error-tag>
<error-severity>error</error-severity>
<error-info>
<bad-element>message-id</bad-element>
<bad-element>rpc</bad-element>
</error-info>
<error-message>
Check that message-id attribute is present and less than 4096 characters
</error-message>
</rpc-error>
</rpc-reply>
[Fatal Error] :2:20: Attribute name "urn:ietf" associated with an element type "rpc-reply" must be followed by the ' = ' character.
[Fatal Error] :2:20: Attribute name "urn:ietf" associated with an element type "rpc-reply" must be followed by the ' = ' character.
org.xml.sax.SAXParseException; lineNumber: 2; columnNumber: 20; Attribute name "urn:ietf" associated with an element type "rpc-reply" must be followed by the ' = ' character.
at com.sun.org.apache.xerces.internal.parsers.AbstractSAXParser.parse(AbstractSAXParser.java:1239)
at com.tailf.jnc.YangXMLParser.parse(YangXMLParser.java:50)
at com.tailf.jnc.XMLParser.parse(XMLParser.java:154)
at com.tailf.jnc.NetconfSession.recv_rpc_reply(NetconfSession.java:1495)
at com.tailf.jnc.NetconfSession.recv_rpc_reply_data(NetconfSession.java:1472)
at com.tailf.jnc.NetconfSession.getConfig(NetconfSession.java:443)
at client.Client.main(Client.java:51)
Exception in thread "main" Parse error: parse error: org.xml.sax.SAXParseException; lineNumber: 2; columnNumber: 20; Attribute name "urn:ietf" associated with an element type "rpc-reply" must be followed by the ' = ' character.
at com.tailf.jnc.YangXMLParser.parse(YangXMLParser.java:54)
at com.tailf.jnc.XMLParser.parse(XMLParser.java:154)
at com.tailf.jnc.NetconfSession.recv_rpc_reply(NetconfSession.java:1495)
at com.tailf.jnc.NetconfSession.recv_rpc_reply_data(NetconfSession.java:1472)
at com.tailf.jnc.NetconfSession.getConfig(NetconfSession.java:443)
at client.Client.main(Client.java:51)
最佳答案
您实际上似乎有两个问题，但这两个都不是您的错。来自JNC的get-config请求似乎格式错误：message-id属性应位于默认名称空间中，而不应位于NETCONF消息名称空间中。
SEND: <nc:rpc xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0" nc:message-id="1">
<nc:get-config>
<nc:source>
<nc:running/> </nc:source>
</nc:get-config>
</nc:rpc>
实际上应该是：
SEND: <nc:rpc xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0" message-id="1">
<nc:get-config>
<nc:source>
<nc:running/> </nc:source>
</nc:get-config>
</nc:rpc>
第二个问题是您的服务器，它似乎无法处理此格式错误的请求-并以格式错误的消息（甚至不是XML消息）进行响应：
RECV: <?xml version="1.0" encoding="UTF-8"?>
<rpc-reply urn:ietf:params:xml:ns:netconf:base:1.0:message-id="1" xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0" xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
<rpc-error>
<error-type>rpc</error-type>
<error-tag>missing-attribute</error-tag>
<error-severity>error</error-severity>
<error-info>
<bad-element>message-id</bad-element>
<bad-element>rpc</bad-element>
</error-info>
<error-message>
Check that message-id attribute is present and less than 4096 characters
</error-message>
</rpc-error>
</rpc-reply>
它应该以以下方式响应：
RECV: <?xml version="1.0" encoding="UTF-8"?>
<rpc-reply nc:message-id="1" xmlns:nc="urn:ietf:params:xml:ns:netconf:base:1.0" xmlns="urn:ietf:params:xml:ns:netconf:base:1.0">
<rpc-error>
<error-type>rpc</error-type>
<error-tag>missing-attribute</error-tag>
<error-severity>error</error-severity>
<error-info>
<bad-element>message-id</bad-element>
<bad-element>rpc</bad-element>
</error-info>
<error-message>
Check that message-id attribute is present and less than 4096 characters
</error-message>
</rpc-error>
</rpc-reply>
因为应该原样返回所有属性。否则，当没有
message-id属性的消息发送到服务器时，这将是标准行为。下面的相关RFC4741文本（这同样适用于RFC6241，NETCONF 1.1）。
Section 4.1：
元素具有强制属性“ message-id”，该属性是
由RPC发送者选择的任意字符串，通常
编码单调递增的整数。 RPC的接收者
不会解码或解释此字符串，而只是将其保存为
在任何结果中用作“ message-id”属性
信息。例如：
<rpc message-id="101" xmlns="urn:ietf:params:xml:ns:netconf:base:1.0"> <some-method> <!-- method parameters here... --> </some-method> </rpc>如果元素中存在其他属性，则为NETCONF
对等体必须在元素中返回未修改的内容。
Section 4.3
如果收到的元素没有
message-id属性。请注意，只有在这种情况下
NETCONF对等方可以忽略message-id属性
在元素中。
<rpc xmlns="urn:ietf:params:xml:ns:netconf:base:1.0"> <get-config> <source> <running/> </source> </get-config> </rpc> <rpc-reply xmlns="urn:ietf:params:xml:ns:netconf:base:1.0"> <rpc-error> <error-type>rpc</error-type> <error-tag>missing-attribute</error-tag> <error-severity>error</error-severity> <error-info> <bad-attribute>message-id</bad-attribute> <bad-element>rpc</bad-element> </error-info> </rpc-error> </rpc-reply> 因此，我相信您应该向设备制造商和JNC的创建者报告两个问题。
它与MG-SOFT客户端一起使用的原因是它发送了正确的
message-id属性，因此您的情况永远不会发生。关于java - Netconf:无法执行getConfig()，我们在Stack Overflow上找到一个类似的问题：https://stackoverflow.com/questions/38099946/