如何在Golang中修改XML并仅返回内容而不包含包装器。

huangapple
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英文:

How to modify xml and return only content without the wrapper in golang

问题

我有一个像这样的XML文件：

  1. <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns="http://www.opentravel.org/OTA/2003/05">
  2.     <soap:Header/>
  3.     <soap:Body>
  4.         <contents>
  5.             <article>
  6.                 <category>Server</category>
  7.                 <title>Connect to Oracle Server using Golang and Go-OCI8 on Ubuntu</title>
  8.                 <url>/go-oci8-oracle-linux/</url>
  9.             </article>
  10.             <article>
  11.                 <category>Server</category>
  12.                 <title>Easy Setup OpenVPN Using Docker DockVPN</title>
  13.                 <url>/easy-setup-openvpn-docker/</url>
  14.             </article>
  15.             <article info="popular article">
  16.                 <category>Server</category>
  17.                 <title>Setup Ghost v0.11-LTS, Ubuntu, Nginx, Custom Domain, and SSL</title>
  18.                 <url>/ghost-v011-lts-ubuntu-nginx-custom-domain-ssl/</url>
  19.             </article>
  20.         </contents>
  21.     </soap:Body>
  22. </soap:Envelope>

我想将其修改为只返回如下内容：

  1. <?xml version="1.0" encoding="UTF-8"?>
  2.  <contents>
  3.     <article>
  4.         <category>Server</category>
  5.         <title>Connect to Oracle Server using Golang and Go-OCI8 on Ubuntu</title>
  6.         <url>/go-oci8-oracle-linux/</url>
  7.     </article>
  8.     <article>
  9.         <category>Server</category>
  10.         <title>Easy Setup OpenVPN Using Docker DockVPN</title>
  11.         <url>/easy-setup-openvpn-docker/</url>
  12.     </article>
  13.     <article info="popular article">
  14.         <category>Server</category>
  15.         <title>Setup Ghost v0.11-LTS, Ubuntu, Nginx, Custom Domain, and SSL</title>
  16.         <url>/ghost-v011-lts-ubuntu-nginx-custom-domain-ssl/</url>
  17.     </article>
  18. </contents>

所以我想移除包装器，只选择 soap:Body，也许可以使用 etree（https://pkg.go.dev/github.com/beevik/etree#Element）来解决问题？

英文:

I have an XML file like this

  1. <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns="http://www.opentravel.org/OTA/2003/05">
  2.     <soap:Header/>
  3.     <soap:Body>
  4.         <contents>
  5.             <article>
  6.                 <category>Server</category>
  7.                 <title>Connect to Oracle Server using Golang and Go-OCI8 on Ubuntu</title>
  8.                 <url>/go-oci8-oracle-linux/</url>
  9.             </article>
  10.             <article>
  11.                 <category>Server</category>
  12.                 <title>Easy Setup OpenVPN Using Docker DockVPN</title>
  13.                 <url>/easy-setup-openvpn-docker/</url>
  14.             </article>
  15.             <article info="popular article">
  16.                 <category>Server</category>
  17.                 <title>Setup Ghost v0.11-LTS, Ubuntu, Nginx, Custom Domain, and SSL</title>
  18.                 <url>/ghost-v011-lts-ubuntu-nginx-custom-domain-ssl/</url>
  19.             </article>
  20.         </contents>
  21.     </soap:Body>
  22. </soap:Envelope>

I want to modify it to only return like this

  1. <?xml version="1.0" encoding="UTF-8"?>
  2.  <contents>
  3.     <article>
  4.         <category>Server</category>
  5.         <title>Connect to Oracle Server using Golang and Go-OCI8 on Ubuntu</title>
  6.         <url>/go-oci8-oracle-linux/</url>
  7.     </article>
  8.     <article>
  9.         <category>Server</category>
  10.         <title>Easy Setup OpenVPN Using Docker DockVPN</title>
  11.         <url>/easy-setup-openvpn-docker/</url>
  12.     </article>
  13.     <article info="popular article">
  14.         <category>Server</category>
  15.         <title>Setup Ghost v0.11-LTS, Ubuntu, Nginx, Custom Domain, and SSL</title>
  16.         <url>/ghost-v011-lts-ubuntu-nginx-custom-domain-ssl/</url>
  17.     </article>
  18. </contents>

So I want to remove the wrapper and only select soap:Body
maybe some solution using etree (https://pkg.go.dev/github.com/beevik/etree#Element) ?

===========================================================

答案1

得分: 1

标准库足够胜任这个任务。只需解析XML文档，使用xml:"innerxml"将Body元素中的任意XML内容消耗掉。然后你可以将其原样输出。

  1. package main
  3. import (
  4. 	"bytes"
  5. 	"encoding/xml"
  6. 	"io"
  7. 	"log"
  8. 	"os"
  9. )
  11. var src = []byte(`
  12. <soap:Envelope xmlns:soap="http://schemas.xmlsoap.org/soap/envelope/" xmlns:ns="http://www.opentravel.org/OTA/2003/05">
  13.     <soap:Header/>
  14.     <soap:Body>
  15.         <contents>
  16.             <article>
  17.                 <category>Server</category>
  18.                 <title>Connect to Oracle Server using Golang and Go-OCI8 on Ubuntu</title>
  19.                 <url>/go-oci8-oracle-linux/</url>
  20.             </article>
  21.             <!-- ... -->
  22.         </contents>
  23.     </soap:Body>
  24. </soap:Envelope>
  25. `)
  27. type envelope struct {
  28. 	XMLName xml.Name `xml:"Envelope"`
  29. 	Body    struct {
  30. 		InnerXML []byte `xml:",innerxml"`
  31. 	}
  32. }
  34. func main() {
  35. 	var e envelope
  36. 	if err := xml.Unmarshal(src, &e); err != nil {
  37. 		log.Fatal(err)
  38. 	}
  40. 	io.WriteString(os.Stdout, xml.Header)
  41. 	os.Stdout.Write(bytes.TrimSpace(e.Body.InnerXML))
  42. }

在playground上尝试一下：https://go.dev/play/p/CUEpuPfh_Xl

英文:

The standard library is capable enough for this task. Simply parse the XML document, using xml:&quot;,innerxml&quot; for the Body element to consume arbitrary XML inside. Then you can just spit it back out.

  1. package main
  3. import (
  4. 	&quot;bytes&quot;
  5. 	&quot;encoding/xml&quot;
  6. 	&quot;io&quot;
  7. 	&quot;log&quot;
  8. 	&quot;os&quot;
  9. )
  11. var src = []byte(`
  12. &lt;soap:Envelope xmlns:soap=&quot;http://schemas.xmlsoap.org/soap/envelope/&quot; xmlns:ns=&quot;http://www.opentravel.org/OTA/2003/05&quot;&gt;
  13.     &lt;soap:Header/&gt;
  14.     &lt;soap:Body&gt;
  15.         &lt;contents&gt;
  16.             &lt;article&gt;
  17.                 &lt;category&gt;Server&lt;/category&gt;
  18.                 &lt;title&gt;Connect to Oracle Server using Golang and Go-OCI8 on Ubuntu&lt;/title&gt;
  19.                 &lt;url&gt;/go-oci8-oracle-linux/&lt;/url&gt;
  20.             &lt;/article&gt;
  21.             &lt;!-- ... --&gt;
  22.         &lt;/contents&gt;
  23.     &lt;/soap:Body&gt;
  24. &lt;/soap:Envelope&gt;
  25. `)
  27. type envelope struct {
  28. 	XMLName xml.Name `xml:&quot;Envelope&quot;`
  29. 	Body    struct {
  30. 		InnerXML []byte `xml:&quot;,innerxml&quot;`
  31. 	}
  32. }
  34. func main() {
  35. 	var e envelope
  36. 	if err := xml.Unmarshal(src, &amp;e); err != nil {
  37. 		log.Fatal(err)
  38. 	}
  40. 	io.WriteString(os.Stdout, xml.Header)
  41. 	os.Stdout.Write(bytes.TrimSpace(e.Body.InnerXML))
  42. }

Try it on the playground: https://go.dev/play/p/CUEpuPfh_Xl

huangapple
  • 本文由 发表于 2022年9月30日 15:37:49
  • 转载请务必保留本文链接：https://go.coder-hub.com/73905443.html
  • go
  • xml
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