golang template 动态传递参数的方法

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type Template
    func New(name string) *Template
    func ParseFiles(filenames ...string) (*Template, error)
    func Must(t *Template, err error) *Template

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func (t *Template) Parse(text string) (*Template, error)
func (t *Template) ParseFiles(filenames ...string) (*Template, error)

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var templateText = `This is a test for template:
Name: {{.Name}}
Age: {{.Age}}
School: {{.School}}
Married: {{.MarriedOK}}
`

t, err = t.Parse(templateText)

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var example = struct {
    Name    string
    Age     int
    School  string
    MarriedOK bool
}{
    Name:    "xiewei",
    Age:     18,
    School:  "shanghaiUniversity",
    MarriedOK: true,
}


t.Execute(os.Stdout, example)

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Name: xiewei
Age: 18
School: shanghaiUniversity
Married: true

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package main

import (
    "log"
    "os"
    "text/template"
)

func main() {
    // Define a template.
    const letter = `
Dear {{.Name}},
{{if .Attended}}
It was a pleasure to see you at the wedding.
{{- else}}
It is a shame you couldn't make it to the wedding.
{{- end}}
{{with .Gift -}}
Thank you for the lovely {{.}}.
{{end}}
Best wishes,
Josie
`

    // Prepare some data to insert into the template.
    type Recipient struct {
        Name, Gift string
        Attended   bool
    }
    var recipients = []Recipient{
        {"Aunt Mildred", "bone china tea set", true},
        {"Uncle John", "moleskin pants", false},
        {"Cousin Rodney", "", false},
    }

    // Create a new template and parse the letter into it.
    t := template.Must(template.New("letter").Parse(letter))

    // Execute the template for each recipient.
    for _, r := range recipients {
        err := t.Execute(os.Stdout, r)
        if err != nil {
            log.Println("executing template:", err)
        }
    }
}

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Dear Aunt Mildred,

It was a pleasure to see you at the wedding.
Thank you for the lovely bone china tea set.

Best wishes,
Josie

Dear Uncle John,

It is a shame you couldn't make it to the wedding.
Thank you for the lovely moleskin pants.

Best wishes,
Josie

Dear Cousin Rodney,

It is a shame you couldn't make it to the wedding.

Best wishes,
Josie

Program exited.

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package main

import (
	"bytes"
	"fmt"
	"log"
	"text/template"
)

func main() {
	// Define a template.
	const letter = `
Dear {{.Name}},
{{if .Attended}}
It was a pleasure to see you at the wedding.
{{- else}}
It is a shame you couldn't make it to the wedding.
{{- end}}
{{with .Gift -}}
Thank you for the lovely {{.}}.
{{end}}
Best wishes,
Josie
`
	// Create a new template and parse the letter into it.
	t := template.Must(template.New("letter").Parse(letter))

	var data map[string]interface{} = map[string]interface{}{
		"Name":     "Li xp",
		"Gift":     "i Macbook pro",
		"Attended": true,
	}

	var out bytes.Buffer
	err := t.Execute(&out, data)
	if err != nil {
		log.Println("executing template:", err)
	}
	fmt.Printf("success %v\n", out.String())
}

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type User struct {
    Name string
}

func main() {
    tpl := template.New("example")
    tpl, _ = tpl.Parse("<p> hello {{.Name}} </p>")
    data := User{Name: "Tom"}

    var buf bytes.Buffer
    if err := tpl.Execute(&buf, data); err != nil {
        log.Fatal(err)
    }
    fmt.Println(buf.String()) // 渲染后的字符串 // <p> hello Tom </p>
}