Bash将子节点插入XML文件 [英] Bash insert subnode to XML file

问题描述

我正在尝试使用bash编辑配置文件.我的文件如下所示:

Im trying to edit a config file using bash. My file looks like this:

<configuration>
  <property>
    <name></name>
    <value></value>
  </property>
  <property>
    <name></name>
    <value></value>
  </property>
</configuration>

我想在文件中添加另外两个<property>块.由于所有property标记都包含在configuration标记内，因此文件看起来像这样:

I want to add another couple of <property> blocks to the file. Since all property tags are enclosed inside the configuration tags the file would looks like this:

<configuration>
  <property>
    <name></name>
    <value></value>
  </property>
  <property>
    <name></name>
    <value></value>
  </property>
  <property>
    <name></name>
    <value></value>
  </property>
</configuration>

我遇到了此帖子并遵循接受的答案，但是没有任何内容附加到我的文件中，而我尝试附加的xml块作为单个行字符串被回显". 我的bash文件如下所示:

I came across this post and followed the accepted answer, however nothing is appended to my file and the xml block I try to append is "echo-ed" as a single line string. My bash file looks like this:

file=/path/to/file/oozie-site.xml
content="<property>\n<name></name>\n<value></value>\n</property>\n<property>\n<name></name>\n<value></value>\n</property>"
echo $content
C=$(echo $content | sed 's/\//\\\//g')
sed "/<\/configuration>/ s/.*/${C}\n&/" $file

推荐答案

使用xmlstarlet:

With xmlstarlet:

xmlstarlet edit --omit-decl \
  -s '//configuration' -t elem -n "property" \
  -s '//configuration/property[last()]' -t elem -n "name" \
  -s '//configuration/property[last()]' -t elem -n "value" \
  file.xml

输出:

<configuration>
  <property>
    <name/>
    <value/>
  </property>
  <property>
    <name/>
    <value/>
  </property>
  <property>
    <name/>
    <value/>
  </property>
</configuration>

---

--omit-decl:省略XML声明

-s:添加一个子节点(请参见 xmlstarlet edit 了解详情)

-s: add a subnode (see xmlstarlet edit for details)

-t elem:设置节点类型，此处:元素

-t elem: set node type, here: element

-n:设置元素名称

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