将 xml 解析为并替换特定标签的 shell 脚本 [英] Parsing xml to and replacing specific tags shell script

问题描述

对于下面的 xml，我需要将 CLASSA 的 替换为 .

For the below xml ,I need to replace <studentStatus> for <studentName>CLASSA</studentName> to <studentStatus>failed</studentStatus>.

<studentFile>
    <student>
        <studentName>CLASSA</studentName>
        <studentStatus>Success</studentStatus>
        <studentActions>
            <studentAction>
                <studentType>Juniour</studentType>
                <studentStatus>Completed</studentStatus>
                <studentMsg/>
            </studentAction>
            <studentAction>
                <studentType>HighSchool</studentType>
                <studentStatus>Completed</studentStatus>
                <studentMsg/>
            </studentAction>
        </studentActions>
    </student>
    <student>
        <studentName>CLASSB</studentName>
        <studentStatus>Success</studentStatus>
        <studentActions>
            <studentAction>
                <studentType>Senior</studentType>
                <studentStatus>Completed</studentStatus>
            </studentAction>
            <studentAction>
                <studentType>Middle</studentType>
                <studentStatus>Completed</studentStatus>
            </studentAction>                         
        </studentActions>
    </student>
</studentFile>

到目前为止，我得到了什么，

What I got so far,

xmllint -xpath "/studentFile/student[studentName='CLASSA']/studentActions/studentAction[studentType="Juniour"]/studentStatus" myxml.xml

现在我的学生状态为 Completed ，现在该值应更改为 Failed .仅适用于 <studentType>Juniour</studentType>.我应该如何编辑 xml 以将其作为 ,

now i got the status of the student as Completed , now this value should be changed to Failed . Only for <studentType>Juniour</studentType>. How should I edit the xml inorder to get it as ,

<studentFile>
    <student>
        <studentName>CLASSA</studentName>
        <studentStatus>Success</studentStatus>
        <studentActions>
            <studentAction>
                <studentType>Juniour</studentType>
                <studentStatus>Failed</studentStatus>
                <studentMsg/>
            </studentAction>
            <studentAction>
                <studentType>HighSchool</studentType>
                <studentStatus>Completed</studentStatus>
                <studentMsg/>
            </studentAction>
        </studentActions>
    </student>
    <student>
        <studentName>CLASSB</studentName>
        <studentStatus>Success</studentStatus>
        <studentActions>
            <studentAction>
                <studentType>Senior</studentType>
                <studentStatus>Completed</studentStatus>
            </studentAction>
            <studentAction>
                <studentType>Middle</studentType>
                <studentStatus>Completed</studentStatus>
            </studentAction>                         
        </studentActions>
    </student>
</studentFile>

这可以使用 sed 来完成吗?我知道有像 xsltproc 这样的工具，但不确定它是否安装在我们集群的所有节点中.

Can this be done using sed. I know there are tools like xsltproc but not sure if this is installed in all nodes in our cluster .

任何帮助将不胜感激.提前致谢！

Any help will be appreciated. Thanks in advance!

推荐答案

用 file.xml 中的 xmllint 更新值:

Update value with xmllint in file.xml:

xmllint --shell file.xml << EOF
cd /studentFile/student[studentName='CLASSA']/studentActions/studentAction[studentType='Juniour']/studentStatus
set failed
save
EOF

或者没有这里文档:

echo -e "cd /studentFile/student[studentName='CLASSA']/studentActions/studentAction[studentType='Juniour']/studentStatus
set failed
save" | xmllint --shell file.xml

<小时>

更新:在变量中使用 bash 和 XML:

---

Update: With bash and XML in a variable:

xml=$(xmllint --shell <(echo "$xml") << EOF
cd /studentFile/student[studentName='CLASSA']/studentActions/studentAction[studentType='Juniour']/studentStatus
set failed
save -
EOF
)

或者没有这里文档:

xml=$(echo -e "cd /studentFile/student[studentName='CLASSA']/studentActions/studentAction[studentType='Juniour']/studentStatus
set failed
save -" | xmllint --shell <(echo "$xml"))

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