在Bash中使用xmllint从WSDL文件检索信息

Question

Can I use xmllint to retrieve information from a ".wsdl" file similar to how I would from an ".xml" file in Bash?

To put things into context, I have an xml file, which I use xmllint to get certain information in the following way in my Bash script:

init_variable=$(xmllint --xpath 'string(/tag1/tag2/tag3/attribute)' SampleMessages.xml)

where the "tags" represent the hierarchy in my xml and the attribute is the content of the attribute I retrieve the information from. This code works when the file is ".xml"

When I try to do the same with a ".wsdl" file, I get an error. Essentially, I'm trying to do the same thing as above with xmllint . However, each tag in that file is preceded with an wsdl: (see example below).

I'm trying to run the following:

serviceDescription=$(xmllint --xpath 'string(/wsdl:tag1/wsdl:tag2/wsdl:attribute)' ExampleFile.wsdl)

When I run the bash script, I get the following error in my terminal:

XPath error : Undefined namespace prefix

xmlXPathEval: evaluation failed

XPath evaluation failure

I'm not sure what the error means, nor do I know if I can run xmllint on a ".wsdl" file as I have with an ".xml"

Answer 1

Found the solution and it is to use xmlstarlet

More information can also be found in this answer