GoFrame入门教程 GoFrame 工具方法-gutil

2024-02-25 开发教程 GoFrame入门教程匿名 3℃

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：Dump将values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：DumpWithType 和 Dump 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：DumpTo将value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!

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"GoFrame入门教程"的目录

GoFrame入门教程 GoFrame 工具方法-gutil

基本介绍

常用方法

Dump

DumpWithType

DumpTo