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Version: 2.7.x(Latest)

基本介绍

gutil 组件封装了一些开发中常用的工具方法。

使用方式:

import "github.com/gogf/gf/v2/util/gutil"

接口文档:

https://pkg.go.dev/github.com/gogf/gf/v2/util/gutil

常用方法

Dump

  • 说明: Dumpvalues 以更好的可读性的方式输出在标准输出中。

  • 格式:

Dump(values ...interface{})
  • 示例:
type User struct {
Name string
Age int
}

type Location struct {
Province string
City string
}

type UserInfo struct {
U User
L Location
}

func main() {
userList := make([]UserInfo, 0)
userList = append(userList, UserInfo{
U: User{
Name: "郭强",
Age: 18,
},
L: Location{
Province: "四川",
City: "成都",
},
})
userList = append(userList, UserInfo{
U: User{
Name: "黄骞",
Age: 18,
},
L: Location{
Province: "江苏",
City: "南京",
},
})

gutil.Dump(userList)
}

// Output:
[
{
U: {
Name: "郭强",
Age: 18,
},
L: {
Province: "四川",
City: "成都",
},
},
{
U: {
Name: "黄骞",
Age: 18,
},
L: {
Province: "江苏",
City: "南京",
},
},
]

DumpWithType

  • 说明: DumpWithTypeDump 类似,但是多了类型信息。

  • 格式:

DumpWithType(values ...interface{})
  • 示例:
type User struct {
Name string
Age int
}

type Location struct {
Province string
City string
}

type UserInfo struct {
U User
L Location
}

func main() {
userList := make([]UserInfo, 0)
userList = append(userList, UserInfo{
U: User{
Name: "郭强",
Age: 18,
},
L: Location{
Province: "四川",
City: "成都",
},
})
userList = append(userList, UserInfo{
U: User{
Name: "黄骞",
Age: 18,
},
L: Location{
Province: "江苏",
City: "南京",
},
})

gutil.DumpWithType(userList)
}

// Output:
[]main.UserInfo(2) [
main.UserInfo(2) {
U: main.User(2) {
Name: string(6) "郭强",
Age: int(18),
},
L: main.Location(2) {
Province: string(6) "四川",
City: string(6) "成都",
},
},
main.UserInfo(2) {
U: main.User(2) {
Name: string(6) "黄骞",
Age: int(18),
},
L: main.Location(2) {
Province: string(6) "江苏",
City: string(6) "南京",
},
},
]

DumpTo

  • 说明: DumpTovalue 以自定义的输出形式写入到 write 中。

  • 格式:

DumpTo(writer io.Writer, value interface{}, option DumpOption)
  • 示例:
package main

import (
"bytes"
"fmt"
"github.com/gogf/gf/v2/util/gutil"
"io"
)

type UserInfo struct {
Name string
Age int
Province string
City string
}

type DumpWriter struct {
Content string
}

func (d *DumpWriter) Write(p []byte) (n int, err error) {
buffer := bytes.NewBuffer(nil)
buffer.WriteString("I'm Start!\n")
buffer.WriteString(string(p))
buffer.WriteString("\nI'm End!\n")

d.Content = buffer.String()

return buffer.Len(), nil
}

func main() {
u := UserInfo{
"a", 18, "b", "c",
}

var dw io.Writer = &DumpWriter{}

gutil.DumpTo(dw, u, gutil.DumpOption{})

fmt.Println(dw.(*DumpWriter).Content)
}

// Output:
I'm Start!
{
Name: "a",
Age: 18,
Province: "b",
City: "c",
}
I'm End!