如何从xml中打印值并使用: Seperator写入文本文件

Question

I have a pom.xml, which i need to parse using shell to get the tag values and write it in to text file using ':' as a seperator

**XML:**
<dependency>
      <groupId>com.dtd</groupId>
      <artifactId>dtc-api-commons</artifactId>
      <version>3.3.2-SNAPSHOT</version>
</dependency>
<dependency>
      <groupId>com.dtd</groupId>
      <artifactId>dtc-api-commons</artifactId>
      <version>3.3.1_1-SNAPSHOT</version>
</dependency>
<dependency>
      <groupId>com.dtd</groupId>
      <artifactId>dtc-api-commons</artifactId>
      <version>3.3.1-SNAPSHOT</version>
</dependency>
<dependency>
      <groupId>com.dtd</groupId>
      <artifactId>dtc-api-commons</artifactId>
      <version>3.3.0-SNAPSHOT</version>
</dependency>

**Expected output:**
com.dtd:dtc-api-commons:3.3.2-SNAPSHOT
com.dtd:dtc-api-commons:3.3.1-SNAPSHOT
com.dtd:dtc-api-commons:3.3.1_1-SNAPSHOT
com.dtd:dtc-api-commons:3.3.0-SNAPSHOT

请帮助我提供准确的shell命令来解析xml并使用以下分隔符以预期的格式写入值

Answer 1

假设您将XML封装在根标记中，则可能是POM文件的<project>：

<project>
    <dependency>
              <groupId>com.dtd</groupId>
              <artifactId>dtc-api-commons</artifactId>
              <version>3.3.2-SNAPSHOT</version>
    </dependency>
    <dependency>
              <groupId>com.dtd</groupId>
              <artifactId>dtc-api-commons</artifactId>
              <version>3.3.1_1-SNAPSHOT</version>
    </dependency>
    <dependency>
              <groupId>com.dtd</groupId>
              <artifactId>dtc-api-commons</artifactId>
              <version>3.3.1-SNAPSHOT</version>
    </dependency>
    <dependency>
              <groupId>com.dtd</groupId>
              <artifactId>dtc-api-commons</artifactId>
              <version>3.3.0-SNAPSHOT</version>
    </dependency>
</project>

您可以使用xmlstarlet：

xmlstarlet sel -T -t -m '//project/dependency' -v 'concat(groupId,":",artifactId,":",version)' -nl pom.xml
com.dtd:dtc-api-commons:3.3.2-SNAPSHOT
com.dtd:dtc-api-commons:3.3.1_1-SNAPSHOT
com.dtd:dtc-api-commons:3.3.1-SNAPSHOT 
com.dtd:dtc-api-commons:3.3.0-SNAPSHOT

sel：选择

-T：输出文本

-t：模板

-m：匹配xpath

-v：获取与:连接的所有3个节点的值

-nl：打印换行符