问题描述
我正在尝试使用 xmlstarlet 从 Wildfly 集群配置更新 host-slave.xml.
I am trying to update the host-slave.xml from a Wildfly Cluster configuration with xmlstarlet.
我正在使用以下语句:
xml ed -N my=urn:jboss:domain:2.2 -u "_:host/management/security-realms/security-realm[@name='UndertowRealm']/server-identities/ssl/keystore/@path" -v "test" Wildfly\wildfly-8.2.0.Final\WildFly-HOST\configuration\host-slave.xml
xml 中的命名空间定义:
The namespace definition in xml:
<host name="172.16.1.11" xmlns="urn:jboss:domain:2.2" >
我要更改的xml部分:
The part of the xml I want to change:
<security-realm name="UndertowRealm">
<server-identities>
<ssl>
<keystore path="D:\wildfly-8.2.0.Final\ssl\wildfly.keystore" keystore-password="rsaddbTsadYvvMXZ" alias="wildfly" />
</ssl>
</server-identities>
</security-realm>
但是如果我从 xml 中删除命名空间定义，并使用以下语句:
But if I delete the namespace defition from the xml, and use the following statement:
xml ed -u ":host/management/security-realms/security-realm[@name='UndertowRealm']/server-identities/ssl/keystore/@path" -v "test" Wildfly\wildfly-8.2.0.Final\WildFly-HOST\configuration\host-slave.xml
它按预期工作，所以它不是 XPATH 的问题.因为我不知道如果我删除命名空间声明会发生什么wildfly，我想保留它.
It works as expected, so it is not an Issue with XPATH.As I dont know what happens to wildfly if I delete the namespace declaration, I would like to keep it.
推荐答案
问题是您需要使用声明的前缀(my，您正确映射到默认命名空间 URI)来引用XPath 中该命名空间中的元素，例如:
The problem is that you need to use the declared prefix (my, which you correctly mapped to the default namespace URI) to reference element in that namespace in your XPath, for example :
/my:security-realm[@name='UndertowRealm']/my:server-identities/my:ssl/my:keystore/@path
基本上，所有没有前缀的元素，在声明默认命名空间的元素中，都被认为是在同一个默认命名空间中，因此需要使用前缀my来引用.
Basically, all element without prefix, within element where default namespace is declared, are considered in the same default namespace, hence need to be referenced using the prefix my.
这篇关于使用 xmlstarlet 1.6.1 更新带有命名空间的 XML的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！