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!