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XML parsing not happening with Prolog

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1

Recently I starting using Go. I am facing one problem while parsing XML.

Here is the issue:

I am successfully able to parse the following XML:

<Root>
<cookie name="e1">hsdhsdhs</cookie>
<cookie name="e2">sssss</cookie>
<cookie name="e3">null</cookie>
<info>
<name>sam</name>
</info>
</Root>

Here are the structs:

type Profile struct 
 RootElement xml.Name `xml:"Root"`
 CookieList []Cookie `xml:"cookie"`
 Info Information `xml:"info"`


type Cookie struct 
 Name string `xml:"name,attr"`
 Value string `xml:",chardata"`


type Information struct 
 Name string `xml:"name"`

And the above struct is working fine.

profile := Profile
xml.Unmarshal([]byte(xmlString), &profile)
jsonData, _ := json.Marshal(profile)
fmt.Println(string(jsonData))

But as I keep prolog in XML:

<?xml version="1.0" encoding="EUC-JP"?>
 <Root>
 <cookie name="e1">hsdhsdhs</cookie>
 <cookie name="e2">sssss</cookie>
 <cookie name="e3">null</cookie>
 <info>
 <name>sam</name>
 </info>
 </Root>

then while printing, no data is displaying inside the JSON.

Not sure what is the issue here with Prolog.

xml go xml-parsing

share|improve this question

edited Mar 28 at 4:00

nagendra547

asked Mar 28 at 2:05

nagendra547nagendra547

1,88588 silver badges2626 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Change the encoding to utf-8..??
  
  – devdotlog
  Mar 28 at 2:37
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Yes. Then it's working. But I need it for EUC-JP.
  
  – nagendra547
  Mar 28 at 2:38
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Looks like the issue is with parsing using EUC-JP
  
  – nagendra547
  Mar 28 at 2:39
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  blog.tristanmedia.com/2014/10/…
  
  – beiping96
  Mar 28 at 3:51
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @MaruthiAdithya Added information Struct
  
  – nagendra547
  Mar 28 at 4:00
  

  
  
  
  

 | 
show 2 more comments

1

Recently I starting using Go. I am facing one problem while parsing XML.

Here is the issue:

I am successfully able to parse the following XML:

<Root>
<cookie name="e1">hsdhsdhs</cookie>
<cookie name="e2">sssss</cookie>
<cookie name="e3">null</cookie>
<info>
<name>sam</name>
</info>
</Root>

Here are the structs:

type Profile struct 
 RootElement xml.Name `xml:"Root"`
 CookieList []Cookie `xml:"cookie"`
 Info Information `xml:"info"`


type Cookie struct 
 Name string `xml:"name,attr"`
 Value string `xml:",chardata"`


type Information struct 
 Name string `xml:"name"`

And the above struct is working fine.

profile := Profile
xml.Unmarshal([]byte(xmlString), &profile)
jsonData, _ := json.Marshal(profile)
fmt.Println(string(jsonData))

But as I keep prolog in XML:

<?xml version="1.0" encoding="EUC-JP"?>
 <Root>
 <cookie name="e1">hsdhsdhs</cookie>
 <cookie name="e2">sssss</cookie>
 <cookie name="e3">null</cookie>
 <info>
 <name>sam</name>
 </info>
 </Root>

then while printing, no data is displaying inside the JSON.

Not sure what is the issue here with Prolog.

xml go xml-parsing

share|improve this question

edited Mar 28 at 4:00

nagendra547

asked Mar 28 at 2:05

nagendra547nagendra547

1,88588 silver badges2626 bronze badges

• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Change the encoding to utf-8..??
  
  – devdotlog
  Mar 28 at 2:37
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Yes. Then it's working. But I need it for EUC-JP.
  
  – nagendra547
  Mar 28 at 2:38
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  Looks like the issue is with parsing using EUC-JP
  
  – nagendra547
  Mar 28 at 2:39
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  blog.tristanmedia.com/2014/10/…
  
  – beiping96
  Mar 28 at 3:51
  

  
  
  
  


• 
  
  
  

  
  1
  

  
  
  
  
  
  

  
  
  @MaruthiAdithya Added information Struct
  
  – nagendra547
  Mar 28 at 4:00
  

  
  
  
  

 | 
show 2 more comments

Recently I starting using Go. I am facing one problem while parsing XML.

Here is the issue:

I am successfully able to parse the following XML:

<Root>
<cookie name="e1">hsdhsdhs</cookie>
<cookie name="e2">sssss</cookie>
<cookie name="e3">null</cookie>
<info>
<name>sam</name>
</info>
</Root>

Here are the structs:

type Profile struct 
 RootElement xml.Name `xml:"Root"`
 CookieList []Cookie `xml:"cookie"`
 Info Information `xml:"info"`


type Cookie struct 
 Name string `xml:"name,attr"`
 Value string `xml:",chardata"`


type Information struct 
 Name string `xml:"name"`

And the above struct is working fine.

profile := Profile
xml.Unmarshal([]byte(xmlString), &profile)
jsonData, _ := json.Marshal(profile)
fmt.Println(string(jsonData))

But as I keep prolog in XML:

<?xml version="1.0" encoding="EUC-JP"?>
 <Root>
 <cookie name="e1">hsdhsdhs</cookie>
 <cookie name="e2">sssss</cookie>
 <cookie name="e3">null</cookie>
 <info>
 <name>sam</name>
 </info>
 </Root>

then while printing, no data is displaying inside the JSON.

Not sure what is the issue here with Prolog.

xml go xml-parsing

share|improve this question

edited Mar 28 at 4:00

nagendra547

asked Mar 28 at 2:05

nagendra547nagendra547

1,88588 silver badges2626 bronze badges

<Root>
<cookie name="e1">hsdhsdhs</cookie>
<cookie name="e2">sssss</cookie>
<cookie name="e3">null</cookie>
<info>
<name>sam</name>
</info>
</Root>

type Profile struct 
 RootElement xml.Name `xml:"Root"`
 CookieList []Cookie `xml:"cookie"`
 Info Information `xml:"info"`


type Cookie struct 
 Name string `xml:"name,attr"`
 Value string `xml:",chardata"`


type Information struct 
 Name string `xml:"name"`

profile := Profile
xml.Unmarshal([]byte(xmlString), &profile)
jsonData, _ := json.Marshal(profile)
fmt.Println(string(jsonData))

<?xml version="1.0" encoding="EUC-JP"?>
 <Root>
 <cookie name="e1">hsdhsdhs</cookie>
 <cookie name="e2">sssss</cookie>
 <cookie name="e3">null</cookie>
 <info>
 <name>sam</name>
 </info>
 </Root>

share|improve this question

edited Mar 28 at 4:00

nagendra547

asked Mar 28 at 2:05

nagendra547nagendra547

1,88588 silver badges2626 bronze badges

share|improve this question

edited Mar 28 at 4:00

nagendra547

asked Mar 28 at 2:05

nagendra547nagendra547

1,88588 silver badges2626 bronze badges

asked Mar 28 at 2:05

nagendra547nagendra547

1,88588 silver badges2626 bronze badges

asked Mar 28 at 2:05

nagendra547nagendra547

1,88588 silver badges2626 bronze badges

1 Answer
1

active

oldest

votes

2

Before parsing non-utf8 xml document you have to difine charset reader, thanks to golang.org/x/net/html/charset all you need to do is just replace this string:

xml.Unmarshal([]byte(xmlString), &profile)

with:

decoder := xml.NewDecoder(bytes.NewBufferString(xmlString))
decoder.CharsetReader = charset.NewReaderLabel
err := decoder.Decode(&profile)

share|improve this answer

answered Mar 28 at 16:20

Vadim AshikhmanVadim Ashikhman

6,96211 gold badge1919 silver badges2828 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks that solved the problem, but one issue I found, if there are some Japanese characters in name(e.g - サム ) under Information, then it's printing in weird fashion. It's printing binary characters I guess.
  
  – nagendra547
  Mar 29 at 2:46
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @nagendra547 I just tested these symbols in xml and it outputs fine in json. By name you mean name attribute of the cookie tag?
  
  – Vadim Ashikhman
  Mar 29 at 11:09
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  name under the info TAG
  
  – nagendra547
  Mar 31 at 22:44
  

  
  
  
  

add a comment | 

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2

Before parsing non-utf8 xml document you have to difine charset reader, thanks to golang.org/x/net/html/charset all you need to do is just replace this string:

xml.Unmarshal([]byte(xmlString), &profile)

with:

decoder := xml.NewDecoder(bytes.NewBufferString(xmlString))
decoder.CharsetReader = charset.NewReaderLabel
err := decoder.Decode(&profile)

share|improve this answer

answered Mar 28 at 16:20

Vadim AshikhmanVadim Ashikhman

6,96211 gold badge1919 silver badges2828 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks that solved the problem, but one issue I found, if there are some Japanese characters in name(e.g - サム ) under Information, then it's printing in weird fashion. It's printing binary characters I guess.
  
  – nagendra547
  Mar 29 at 2:46
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @nagendra547 I just tested these symbols in xml and it outputs fine in json. By name you mean name attribute of the cookie tag?
  
  – Vadim Ashikhman
  Mar 29 at 11:09
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  name under the info TAG
  
  – nagendra547
  Mar 31 at 22:44
  

  
  
  
  

add a comment | 

2

Before parsing non-utf8 xml document you have to difine charset reader, thanks to golang.org/x/net/html/charset all you need to do is just replace this string:

xml.Unmarshal([]byte(xmlString), &profile)

with:

decoder := xml.NewDecoder(bytes.NewBufferString(xmlString))
decoder.CharsetReader = charset.NewReaderLabel
err := decoder.Decode(&profile)

share|improve this answer

answered Mar 28 at 16:20

Vadim AshikhmanVadim Ashikhman

6,96211 gold badge1919 silver badges2828 bronze badges

• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  Thanks that solved the problem, but one issue I found, if there are some Japanese characters in name(e.g - サム ) under Information, then it's printing in weird fashion. It's printing binary characters I guess.
  
  – nagendra547
  Mar 29 at 2:46
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  @nagendra547 I just tested these symbols in xml and it outputs fine in json. By name you mean name attribute of the cookie tag?
  
  – Vadim Ashikhman
  Mar 29 at 11:09
  
  

  
  
  
  


• 
  
  
  

  
  

  
  
  
  
  
  

  
  
  name under the info TAG
  
  – nagendra547
  Mar 31 at 22:44
  

  
  
  
  

add a comment | 

Before parsing non-utf8 xml document you have to difine charset reader, thanks to golang.org/x/net/html/charset all you need to do is just replace this string:

xml.Unmarshal([]byte(xmlString), &profile)

with:

decoder := xml.NewDecoder(bytes.NewBufferString(xmlString))
decoder.CharsetReader = charset.NewReaderLabel
err := decoder.Decode(&profile)

share|improve this answer

answered Mar 28 at 16:20

Vadim AshikhmanVadim Ashikhman

6,96211 gold badge1919 silver badges2828 bronze badges

xml.Unmarshal([]byte(xmlString), &profile)

decoder := xml.NewDecoder(bytes.NewBufferString(xmlString))
decoder.CharsetReader = charset.NewReaderLabel
err := decoder.Decode(&profile)

share|improve this answer

answered Mar 28 at 16:20

Vadim AshikhmanVadim Ashikhman

6,96211 gold badge1919 silver badges2828 bronze badges

answered Mar 28 at 16:20

Vadim AshikhmanVadim Ashikhman

6,96211 gold badge1919 silver badges2828 bronze badges

answered Mar 28 at 16:20

Vadim AshikhmanVadim Ashikhman

6,96211 gold badge1919 silver badges2828 bronze badges