卷!一个字形容了当今码农行业的现状。一层一层的代码结构,一个一个dto,entity,vo,req,resp。这些对象越来越多,让码农们非常劳于奔命,加一个字段,改一个字段,影响面有多少。代码量也越来越大。有可能一个代码,要建10多个数据对象。这虽然有点夸张,但体现了行业的乱象。
我是曾经写php代码的研发,由于php的并发能力的不足,和编译检错能力不足,导致行业用php越来越少了。但是不得不说,在php的时代,跟本不需要这么多对象,因为有一个强大的array,包罗万象。难度我们go、java都不能也通过这种方式实现吗?
Allright, 由此,MagicArray就诞生了,不用关心类型,不用关心空指针,不用创建哪么多数据对象,轻松数据转换。废话不多说,上代码:
DTO替代方式:
package main
import (
"encoding/json"
"fmt"
arr "github.com/lingdor/magicarray"
"time"
)
type UserDTO struct {
Id int `json:"userid"`
Name string
}
type ScoreDTO struct {
Score int
ScoreTime time.Time
}
type AreaDto struct {
CityId int
City string
}
func dtosCommand() {
user := UserDTO{
Id: 1,
Name: "bobby",
}
score := ScoreDTO{
Score: 66,
ScoreTime: time.Now(),
}
area := AreaDto{
CityId: 10000,
City: "newyork",
}
mix, _ := arr.Merge(arr.ValueofStruct(user), score, area)
mix = arr.Gets(mix, "Id", "City", "Score")
if bs, err := json.Marshal(mix); err == nil {
fmt.Println(string(bs))
} else {
panic(err)
}
}
输出
{"userid":1,"City":"newyork","Score":66}
数据变换
package main
import (
"encoding/json"
"fmt"
arr "github.com/lingdor/magicarray"
)
type ColumnUserEntity struct {
Id int `json:"uid"`
UserName string
IsMale bool
}
func columnCommand() {
users := []ColumnUserEntity{
{
Id: 1,
UserName: "Bobby",
IsMale: true,
},
{
Id: 2,
UserName: "Lily",
IsMale: false,
},
}
usersArr := arr.ValueOfSlice(users)
usersArr = arr.WashColumnTag(usersArr, arr.WashTagJsonInitalLowerOpt())
if bs, err := json.Marshal(usersArr); err == nil {
fmt.Println(string(bs))
} else {
panic(err)
}
usersArr = arr.Column(usersArr, "UserName")
if bs, err := json.Marshal(usersArr); err == nil {
fmt.Println(string(bs))
} else {
panic(err)
}
}
输出
["Bobby","Lily"]
tag操作
package main
import (
"encoding/json"
"fmt"
arr "github.com/lingdor/magicarray"
)
type UserEntity struct {
Id int `json:"uid"`
UserName string
IsMale bool
}
func tagCommand() {
users := []UserEntity{
{
Id: 1,
UserName: "Bobby",
IsMale: true,
},
{
Id: 2,
UserName: "Lily",
IsMale: false,
},
}
usersArr := arr.ValueOfSlice(users)
usersArr = arr.WashColumnTag(usersArr, arr.WashTagJsonInitalLowerOpt())
if bs, err := json.Marshal(usersArr); err == nil {
fmt.Println(string(bs))
} else {
panic(err)
}
}
输出
[
{"uid":1,"userName":"Bobby","isMale":true},
{"uid":2,"userName":"Lily","isMale":false}
]
参考:https://lingdor.medium.com/magicarray-use-to-data-translate-easily-8831b937bfc1