fix

blog/golang/golang-standard-json.md

+# Golang标准库-json
+
+对json编码和解码
+
+## 两个核心函数
+
+```go
+// struct 转 json
+func Marshal(v any) ([]byte, error) {}
+
+// json 转 struct
+func Unmarshal(data []byte, v any) error {}
+```
+
+示例
+
+```go
+package main
+
+import (
+    "encoding/json"
+    "fmt"
+)
+
+type Person struct {
+    Name  string
+    Age   int
+    Email string
+}
+
+func main() {
+    person := Person{
+        Name:  "Tom",
+        Age:   23,
+        Email: "123@qq.com",
+    }
+
+    // 序列化
+    b, _ := json.Marshal(person)
+    fmt.Printf("b: %v\n", string(b))
+    // b: {"Name":"Tom","Age":23,"Email":"123@qq.com"}
+
+    // 反序列化
+    str := `{"Name":"Tom","Age":23,"Email":"123@qq.com"}`
+    var p Person
+    json.Unmarshal([]byte(str), &p)
+    fmt.Printf("p: %v\n", p)
+    // p: {Tom 23 123@qq.com}
+}
+
+```
+
+解析嵌套类型
+
+```go
+package main
+
+import (
+    "encoding/json"
+    "fmt"
+)
+
+type Person struct {
+    Name string
+    Age  int
+    Pets []string
+}
+
+func main() {
+
+    person := Person{
+        Name: "Tom",
+        Age:  23,
+        Pets: []string{"dog", "cat"},
+    }
+
+    // 序列化
+    b, _ := json.Marshal(person)
+    fmt.Printf("b: %v\n", string(b))
+    // b: {"Name":"Tom","Age":23,"Pets":["dog","cat"]}
+
+    // 反序列化
+    str := `{"Name":"Tom","Age":23,"Pets":["dog","cat"]}`
+    var p Person
+    json.Unmarshal([]byte(str), &p)
+    fmt.Printf("p: %v\n", p)
+    // p: {Tom 23 [dog cat]}
+}
+
+```
+
+## 两个核心结构体
+
+```go
+// io流 Reader
+type Decoder struct {}
+
+// io流 Writer
+type Encoder struct {}
+```
+
+从文件中读取
+
+person.json
+```json
+{
+  "Name": "Tom",
+  "Age": 23,
+  "Pets": ["dog", "cat"]
+}
+
+```
+
+```go
+package main
+
+import (
+    "encoding/json"
+    "fmt"
+    "os"
+)
+
+func main() {
+
+    // 从文件中读取
+    f, _ := os.Open("person.json")
+    defer f.Close()
+
+    decoder := json.NewDecoder(f)
+
+    var m map[string]interface{}
+
+    decoder.Decode(&m)
+
+    fmt.Printf("m: %v\n", m)
+    // m: map[Age:23 Name:Tom Pets:[dog cat]]
+
+}
+
+```
+
+写入文件
+
+```go
+package main
+
+import (
+    "encoding/json"
+    "os"
+)
+
+type Person struct {
+    Name string
+    Age  int
+    Pets []string
+}
+
+func main() {
+    person := Person{
+        Name: "Tom",
+        Age:  23,
+        Pets: []string{"dog", "cat"},
+    }
+
+    // 写入文件
+    f, _ := os.OpenFile("person.json", os.O_WRONLY|os.O_CREATE, 0777)
+    defer f.Close()
+
+    encoder := json.NewEncoder(f)
+
+    encoder.Encode(person)
+
+}
+
+```
+
+输出结果 person.json
+
+```json
+{"Name":"Tom","Age":23,"Pets":["dog","cat"]}
+
+```
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blog/golang/golang-standard-xml.md

+# Golang标准库-xml
+
+对xml解析
+
+## 两个核心函数
+
+```go
+// struct 转 xml
+func Marshal(v any) ([]byte, error) {}
+
+// xml 转 struct
+func Unmarshal(data []byte, v any) error {}
+```
+
+## 两个核心结构体
+
+```go
+// 从输入流读取并解析xml
+type Decoder struct {}
+
+// 将xml写入到输出流
+type Encoder struct {}
+```
+
+序列化
+
+```go
+package main
+
+import (
+    "encoding/xml"
+    "fmt"
+)
+
+type Person struct {
+    XMLName xml.Name `xml:"person"`
+    Name    string   `xml:"name"`
+    Age     int      `xml:"age"`
+    Email   string   `xml:"email"`
+}
+
+func main() {
+    person := Person{
+        Name:  "Tom",
+        Age:   23,
+        Email: "123@qq.com",
+    }
+
+    b, _ := xml.Marshal(person)
+    fmt.Printf("b: %v\n", string(b))
+    // b: <person><name>Tom</name><age>23</age><email>123@qq.com</email></person>
+
+    // 带缩进格式
+    b2, _ := xml.MarshalIndent(person, " ", " ")
+    fmt.Printf("%v\n", string(b2))
+    //  <person>
+    //   <name>Tom</name>
+    //   <age>23</age>
+    //   <email>123@qq.com</email>
+    //  </person>
+}
+
+```
+
+反序列化
+
+```go
+package main
+
+import (
+    "encoding/xml"
+    "fmt"
+)
+
+type Person struct {
+    XMLName xml.Name `xml:"person"`
+    Name    string   `xml:"name"`
+    Age     int      `xml:"age"`
+    Email   string   `xml:"email"`
+}
+
+func main() {
+    str := `
+    <person>
+        <name>Tom</name>
+        <age>23</age>
+        <email>123@qq.com</email>
+    </person>
+    `
+
+    b := []byte(str)
+    var person Person
+    xml.Unmarshal(b, &person)
+    fmt.Printf("person: %v\n", person)
+    // person: {{ person} Tom 23 123@qq.com}
+}
+
+```
+
+## 读写xml文件
+
+从文件读取
+
+person.xml
+
+```xml
+<person>
+    <name>Tom</name>
+    <age>23</age>
+    <email>123@qq.com</email>
+</person>
+```
+
+```go
+package main
+
+import (
+    "encoding/xml"
+    "fmt"
+    "os"
+)
+
+type Person struct {
+    XMLName xml.Name `xml:"person"`
+    Name    string   `xml:"name"`
+    Age     int      `xml:"age"`
+    Email   string   `xml:"email"`
+}
+
+func main() {
+    content, _ := os.ReadFile("person.xml")
+
+    b := []byte(content)
+    var person Person
+    xml.Unmarshal(b, &person)
+    fmt.Printf("person: %v\n", person)
+    // person: {{ person} Tom 23 123@qq.com}
+}
+
+```
+
+写入到文件
+
+```go
+package main
+
+import (
+    "encoding/xml"
+    "os"
+)
+
+type Person struct {
+    XMLName xml.Name `xml:"person"`
+    Name    string   `xml:"name"`
+    Age     int      `xml:"age"`
+    Email   string   `xml:"email"`
+}
+
+func main() {
+    person := Person{
+        Name:  "Tom",
+        Age:   23,
+        Email: "123@qq.com",
+    }
+
+    f, _ := os.OpenFile("person.xml", os.O_WRONLY|os.O_CREATE, os.ModePerm)
+    defer f.Close()
+
+    encoder := xml.NewEncoder(f)
+    encoder.Encode(person)
+}
+
+```
+
+输出结果 person.xml
+```xml
+<person><name>Tom</name><age>23</age><email>123@qq.com</email></person>
+```

blog/golang/index.md

@@ -70,9 +70,10 @@
 - [Golang标准库-errors](/blog/golang/golang-standard-errors.md)
 - [Golang标准库-sort](/blog/golang/golang-standard-sort.md)
 - [Golang标准库-time](/blog/golang/golang-standard-time.md)
+- [Golang标准库-json](/blog/golang/golang-standard-json.md)
+- [Golang标准库-xml](/blog/golang/golang-standard-xml.md)
 
 https://www.bilibili.com/video/BV1ME411Y71o?p=27&spm_id_from=pageDriver&vd_source=efbb4dc944fa761b6e016ce2ca5933da
 
 
-
-https://www.bilibili.com/video/BV1zR4y1t7Wj/?p=96&spm_id_from=pageDriver&vd_source=efbb4dc944fa761b6e016ce2ca5933da
+https://www.bilibili.com/video/BV1zR4y1t7Wj/?p=98&spm_id_from=pageDriver&vd_source=efbb4dc944fa761b6e016ce2ca5933da
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