解析Go中的多个XML标记

Question

我正试图解析sslscan的xml文件，该文件具有以下输出(缩写)。我想用Go解析它。

<document title="SSLScan Results">
 <ssltest host="x.x.x.x" port="443">
   <cipher status="accepted" sslversion="TLSv1.0" bits="256" cipher="DHE-RSA-CAMELLIA256-SHA" dhebits="2048" />
             .
             .
   <cipher status="accepted" sslversion="TLSv1.2" bits="112" cipher="DES-CBC3-SHA" />               .

  <certificate>
   <not-valid-before>Jun  6 00:00:00 2014 GMT</not-valid-before>
   <not-valid-after>Jul  4 23:59:59 2017 GMT</not-valid-after>
  </certificate>
 </ssltest>
</document>

代码：

type XMLStrap struct {
  Status     string `xml:"status,attr"`
  SSLversion string `xml:"sslversion,attr"`
  Bits       string `xml:"bits,attr"`
  Cipher     string `xml:"cipher,attr"`
}

type XMLStraps struct {
  XMLName xml.Name   `xml:"document"`
  Straps  []XMLStrap `xml:"ssltest>cipher"`
}

func ReadStraps(reader io.Reader) ([]XMLStrap, error) {
  var xmlStraps XMLStraps
  if err := xml.NewDecoder(reader).Decode(&xmlStraps); err != nil {
    return nil, err
  }
  return xmlStraps.Straps, nil
}


func main() {
  strapsFilePath, err := filepath.Abs("straps.xml")
  if err != nil {
    fmt.Println(err)
    os.Exit(1)
  }

  file, err := os.Open(strapsFilePath)
  if err != nil {
    fmt.Println(err)
    os.Exit(1)
  }

  defer file.Close()

  xmlStraps, err := ReadStraps(file)
  if err != nil {
    fmt.Println(err)
    os.Exit(1)
  }

  for i := 0; i < len(xmlStraps); i++ {
    fmt.Printf("%s %s %s %s\n", xmlStraps[i].Status,      xmlStraps[i].SSLversion, xmlStraps[i].Bits, xmlStraps[i].Cipher)
  }
}

一切正常，但我不知道如何在不创建新阅读器的情况下解析<certificate><not-valid-before>中的日期。

我试图将前两个结构体更改为

type XMLStrap struct {
  Status     string `xml:"cipher>status,attr"`
  SSLversion string `xml:"cipher>sslversion,attr"`
  Bits       string `xml:"cipher>bits,attr"`
  Cipher     string `xml:"cipher>cipher,attr"`
  Cert       string `xml:"certificate>not-valid-after,chardata"`
}

type XMLStraps struct {
  XMLName xml.Name   `xml:"document"`
  Straps  []XMLStrap `xml:"ssltest"`
}

但这不管用。

xml: cipher>status chain not valid with attr flag exit status 1

显然，在较早版本的围棋中，它起了作用。

Answer 1

我必须将一个新对象的参数分配给返回的对象。我以前试过这个，但我犯了个错误

type XMLStrap struct {
  Status     string `xml:"status,attr"`
  SSLversion string `xml:"sslversion,attr"`
  Bits       string `xml:"bits,attr"`
  Cipher     string `xml:"cipher,attr"`
  Valid      string ""
}

type Certs struct {
  Cert string `xml:"not-valid-after"`
}

type XMLStraps struct {
  XMLName    xml.Name   `xml:"document"`
  Straps     []XMLStrap `xml:"ssltest>cipher"`
  Validation Certs      `xml:"ssltest>certificate"`
}

func ReadStraps(reader io.Reader) ([]XMLStrap, error) {
  var xmlStraps XMLStraps
  if err := xml.NewDecoder(reader).Decode(&xmlStraps); err != nil {
    return nil, err
  }
  xmlStraps.Straps[0].Valid = xmlStraps.Validation.Cert
  return xmlStraps.Straps, nil
}