golang进行xml文件解析的操作方法

<?xml version="1.0" encoding="UTF-8"?>
<config>
   <smtpServer>smtp.163.com</smtpServer>
   <smtpPort>25</smtpPort>
   <sender>user@163.com</sender>
   <senderPasswd>123456</senderPasswd>
   <receivers flag="true">
     <age>16</age>
     <user>Mike_Zhang@live.com</user>
     <user>test1@qq.com</user>
     <script>
     <![CDATA[
        function matchwo(a,b) {
            if (a < b && a < 0) then {
                return 1;
            } else {
                return 0;
            }
        }
        ]]>
     </script>
  </receivers>
 </config>

package main
import (
	"fmt"
	"io/ioutil"
	"encoding/xml"
)
// 定义结构体来映射 XML 结构
type SConfig struct {
	XMLName    xml.Name `xml:"config"`
	SmtpServer string   `xml:"smtpServer"`
	SmtpPort   int      `xml:"smtpPort"`
	Sender     string   `xml:"sender"`
	SenderPasswd string   `xml:"senderPasswd"`
	Receivers  SReceivers `xml:"receivers"`
}
type SReceivers struct {
	Age    int      `xml:"age"`
	Flag   string   `xml:"flag,attr"`
	User   []string `xml:"user"`
	Script string   `xml:"script"`
}
func readXml(path string) {
	// 直接读取文件内容，ioutil 内部处理打开和关闭操作
	data, err := ioutil.ReadFile(path)
	if err!= nil {
		fmt.Println("读文件出错！", err)
		return
	}
	// 初始化结构体变量
	v := SConfig{}
	err = xml.Unmarshal(data, &v)
	if err!= nil {
		fmt.Printf("error: %v", err)
		return
	}
	// 打印解析后的结果
	fmt.Println("SmtpServer : ", v.SmtpServer)
	fmt.Println("SmtpPort : ", v.SmtpPort)
	fmt.Println("Sender : ", v.Sender)
	fmt.Println("SenderPasswd : ", v.SenderPasswd)
	fmt.Println("Receivers.Flag : ", v.Receivers.Flag)
	fmt.Println("Receivers.Age : ", v.Receivers.Age)
	fmt.Println("Receivers.Script : ", v.Receivers.Script)
	for i, element := range v.Receivers.User {
		fmt.Println(i, element)
	}
}
func main() {
	readXml("demo.xml")
}

package main
import (
	"fmt"
	"encoding/xml"
	"bufio"
	"os"
	"io"
)
// 定义结构体来映射 XML 结构
type SConfig struct {
	XMLName    xml.Name `xml:"config"`
	SmtpServer string   `xml:"smtpServer"`
	SmtpPort   int      `xml:"smtpPort"`
	Sender     string   `xml:"sender"`
	SenderPasswd string   `xml:"senderPasswd"`
	Receivers  SReceivers `xml:"receivers"`
}
type SReceivers struct {
	Age    int      `xml:"age"`
	Flag   string   `xml:"flag,attr"`
	User   []string `xml:"user"`
	Script string   `xml:"script"`
}
func readXml(path string) {
	// 打开文件
	file, errOpen := os.Open(path)
	if errOpen!= nil {
		fmt.Println("打开文件异常！", errOpen)
		return
	}
	defer file.Close()
	// 创建带缓存的 Reader
	reader := bufio.NewReader(file)
	decoder := xml.NewDecoder(reader)
	for t, err := decoder.Token(); err == nil || err == io.EOF; t, err = decoder.Token() {
		switch token := t.(type) {
		case xml.StartElement:
			name := token.Name.Local
			fmt.Println(name)
			if name == "config" {
				// 解析 config 
				var sConfig = SConfig{}
				configErr := decoder.DecodeElement(&sConfig, &token)
				if configErr!= nil {
					fmt.Println("解析错误：")
					fmt.Println(configErr)
				} else {
					fmt.Println(sConfig)
				}
				return
			}
		}
	}
}
func main() {
	readXml("demo.xml")
}

<bookstore xmlns:p="urn:schemas-books-com:prices">
  <book category="COOKING">
    <title lang="en">Everyday Italian</title>
    <author>Giada De Laurentiis</author>
    <year>2005</year>
    <p:price>30.00</p:price>
  </book>
  <book category="CHILDREN">
    <title lang="en">Harry Potter</title>
    <author>J K. Rowling</author>
    <year>2005</year>
    <p:price>29.99</p:price>
  </book>
  <book category="WEB">
    <title lang="en">XQuery Kick Start</title>
    <author>James McGovern</author>
    <author>Per Bothner</author>
    <author>Kurt Cagle</author>
    <author>James Linn</author>
    <author>Vaidyanathan Nagarajan</author>
    <year>2003</year>
    <p:price>49.99</p:price>
  </book>
  <book category="WEB">
    <title lang="en">Learning XML</title>
    <author>Erik T. Ray</author>
    <year>2003</year>
    <p:price>39.95</p:price>
  </book>
</bookstore>

package main
import (
	"fmt"
	"github.com/beevik/etree"
)
func readXml(path string) {
	doc := etree.NewDocument()
	if err := doc.ReadFromFile(path); err!= nil {
		panic(err)
	}
	root := doc.SelectElement("bookstore")
	fmt.Println("ROOT element:", root.Tag)
	for _, book := range root.SelectElements("book") {
		fmt.Println("CHILD element:", book.Tag)
		if title := book.SelectElement("title"); title!= nil {
			lang := title.SelectAttrValue("lang", "unknown")
			fmt.Printf("  TITLE: %s (%s)\n", title.Text(), lang)
		}
		for _, attr := range book.Attr {
			fmt.Printf("  ATTR: %s=%s\n", attr.Key, attr.Value)
		}
	}
}
func main() {
	readXml("bookstores.xml")
}

package main
import (
    "encoding/xml"
    "fmt"
    "io"
    "os"
)
// 定义结构体来映射HTML片段中的pre标签
type HTMLPre struct {
    XMLName xml.Name `xml:"htmlpre"`
    Text    string   `xml:",innerxml"`
}
// 定义结构体来映射Rule元素
type XCCDFRule struct {
    XMLName    xml.Name `xml:"Rule"`
    ID         string   `xml:"id,attr"`
    Title      string   `xml:"title"`
    Description string   `xml:"description"`
    HTMLPre    []HTMLPre `xml:"htmlpre"`
}
func parseRule(reader io.Reader) (*XCCDFRule, error) {
    decoder := xml.NewDecoder(reader)
    decoder.Strict = false
    decoder.AutoClose = xml.HTMLAutoClose
    decoder.Entity = xml.HTMLEntity
    var rule XCCDFRule
    for {
        token, err := decoder.Token()
        if err == io.EOF {
            break
        } else if err!= nil {
            return nil, err
        }
        switch se := token.(type) {
        case xml.StartElement:
            if se.Name.Local == "Rule" {
                if err := decoder.DecodeElement(&rule, &se); err!= nil {
                    return nil, err
                }
                // 进一步解析description中的HTML内容
                if err!= nil {
                    return nil, err
                }
                return &rule, nil
            }
        }
    }
    return nil, fmt.Errorf("Rule element not found")
}
func main() {
    file, err := os.Open("your_file.xml")
    if err!= nil {
        fmt.Println("打开文件错误:", err)
        return
    }
    defer file.Close()
    rule, err := parseRule(file)
    if err!= nil {
        fmt.Println("解析错误:", err)
        return
    }
    fmt.Printf("规则ID: %s\n", rule.ID)
    fmt.Printf("规则标题: %s\n", rule.Title)
    fmt.Printf("规则描述: %s\n", rule.Description)
}