使用Golang解析具有相同名称的嵌套节点的XML？

huangapple
go评论113阅读模式
英文:

Golang parse XML with nested nodes of the same name?

问题

我需要解析 XML 代码，

  1. <claims>
  2.     <claim>
  3.         <claim-text>ABC
  4.             <claim-text>PQR</claim-text>
  5.             <claim-text>Xyz
  6.                 <claim-text>A</claim-text>
  7.                 <claim-text>B</claim-text>
  8.                 <claim-text>C</claim-text>
  9.             </claim-text>
  10.         </claim-text>
  11.     </claim>
  12.     <claim>
  13.         <claim-text>PPP
  14.             <claim-text>ZZZ</claim-text>
  15.             <claim-text>MMM</claim-text>
  16.         </claim-text>
  17.     </claim>
  18. </claims>

如何获取包含所有声明文本的 'claim' 数组？
我尝试了以下代码，但它没有返回 claim-text 中的任何文本。

  1. type Result struct {
  2.     Claims  []Claim `xml:"claims>claim"`
  3. }
  4. type Claim struct{
  5.     ClaimText []string `xml:"claim-text"`    
  6. }

任何帮助将不胜感激。

英文:

I need to parse xml code,

  1. &lt;claims&gt;
  2. 	&lt;claim&gt;
  3. 		&lt;claim-text&gt;ABC
  4. 			&lt;claim-text&gt;PQR&lt;/claim-text&gt;
  5. 			&lt;claim-text&gt;Xyz
  6. 				&lt;claim-text&gt;A&lt;/claim-text&gt;
  7. 				&lt;claim-text&gt;B&lt;/claim-text&gt;
  8. 				&lt;claim-text&gt;C&lt;/claim-text&gt;
  9. 			&lt;/claim-text&gt;
  10. 		&lt;/claim-text&gt;
  11. 	&lt;/claim&gt;
  12. 	&lt;claim&gt;
  13. 		&lt;claim-text&gt;PPP
  14. 			&lt;claim-text&gt;ZZZ&lt;/claim-text&gt;
  15. 			&lt;claim-text&gt;MMM&lt;/claim-text&gt;
  16. 		&lt;/claim-text&gt;
  17. 	&lt;/claim&gt;

</claims>

How to get array of 'claim' with inside all claim texts?
I was trying this but it does not give whatever text enclosed in claim-text.

  1. type Result struct {
  2. Claims  []Claim `xml:&quot;claims&gt;claim&quot;`
  3. }
  4. type Claim struct{
  5.   ClaimText []string `xml:&quot;claim-text&quot;`	
  6. }

Any help would be appreciated.

答案1

得分: 2

  1. type Result struct {
  2. 	Claims []Claim `xml:"claim"`
  3. }
  5. type Claim struct {
  6. 	ClaimText []ClaimText `xml:"claim-text"`
  7. }
  9. type ClaimText struct {
  10. 	Value     string      `xml:",chardata"`
  11. 	ClaimText []ClaimText `xml:"claim-text"`
  12. }

如果你想去掉空白字符，你可以实现unmarshaler接口：

  1. func (t *ClaimText) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
  2. 	type T ClaimText
  3. 	if err := d.DecodeElement((*T)(t), &start); err != nil {
  4. 		return err
  5. 	}
  7. 	t.Value = strings.TrimSpace(t.Value)
  8. 	return nil
  9. }

链接：https://play.golang.org/p/uueAiwG84LH

如果你想去掉空白字符，你可以实现unmarshaler接口：

  1. func (t *ClaimText) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
  2. 	type T ClaimText
  3. 	if err := d.DecodeElement((*T)(t), &start); err != nil {
  4. 		return err
  5. 	}
  7. 	t.Value = strings.TrimSpace(t.Value)
  8. 	return nil
  9. }

链接：https://play.golang.org/p/2I1meeBm0pu

英文: 
  1. type Result struct {
  2. 	Claims []Claim `xml:&quot;claim&quot;`
  3. }
  5. type Claim struct {
  6. 	ClaimText []ClaimText `xml:&quot;claim-text&quot;`
  7. }
  9. type ClaimText struct {
  10. 	Value     string      `xml:&quot;,chardata&quot;`
  11. 	ClaimText []ClaimText `xml:&quot;claim-text&quot;`
  12. }

https://play.golang.org/p/uueAiwG84LH

If you want to get rid of the white-space, you can implement the unmarshaler interface:

  1. func (t *ClaimText) UnmarshalXML(d *xml.Decoder, start xml.StartElement) error {
  2. 	type T ClaimText
  3. 	if err := d.DecodeElement((*T)(t), &amp;start); err != nil {
  4. 		return err
  5. 	}
  7. 	t.Value = strings.TrimSpace(t.Value)
  8. 	return nil
  9. }

https://play.golang.org/p/2I1meeBm0pu

答案2

得分: 1

请看这个生成以下结构的在线工具：

  1. type Claims struct {
  2. 	XMLName xml.Name `xml:"claims"`
  3. 	Text    string   `xml:",chardata"`
  4. 	Claim   []struct {
  5. 		Text      string `xml:",chardata"`
  6. 		ClaimText struct {
  7. 			Text      string `xml:",chardata"`
  8. 			ClaimText []struct {
  9. 				Text      string   `xml:",chardata"`
  10. 				ClaimText []string `xml:"claim-text"`
  11. 			} `xml:"claim-text"`
  12. 		} `xml:"claim-text"`
  13. 	} `xml:"claim"`
  14. }
英文:

Take a look at this online tool that generate the following struct:

  1. type Claims struct {
  2. 	XMLName xml.Name `xml:&quot;claims&quot;`
  3. 	Text    string   `xml:&quot;,chardata&quot;`
  4. 	Claim   []struct {
  5. 		Text      string `xml:&quot;,chardata&quot;`
  6. 		ClaimText struct {
  7. 			Text      string `xml:&quot;,chardata&quot;`
  8. 			ClaimText []struct {
  9. 				Text      string   `xml:&quot;,chardata&quot;`
  10. 				ClaimText []string `xml:&quot;claim-text&quot;`
  11. 			} `xml:&quot;claim-text&quot;`
  12. 		} `xml:&quot;claim-text&quot;`
  13. 	} `xml:&quot;claim&quot;`
  14. }

huangapple
  • 本文由 发表于 2021年9月7日 17:44:47
  • 转载请务必保留本文链接：https://go.coder-hub.com/69085903.html
  • go
  • parsing
  • xml
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