golangWeb框架---github.com/gin-gonic/gin学习八(监听多端口、多类型的struct模型绑定)

文章目录
监听多端口
自定义的struct绑定form-data
监听多端口
如何利用gin实现监听多端口

package main

import (
"log"
"net/http"
"time"

"github.com/gin-gonic/gin"
"golang.org/x/sync/errgroup"
)

var (
g errgroup.Group
)

func router01() http.Handler {
e := gin.New()
e.Use(gin.Recovery())
e.GET("/", func(c *gin.Context) {
c.JSON(
http.StatusOK,
gin.H{
"code": http.StatusOK,
"error": "Welcome server 01",
},
)
})

return e
}

func router02() http.Handler {
e := gin.New()
e.Use(gin.Recovery())
e.GET("/", func(c *gin.Context) {
c.JSON(
http.StatusOK,
gin.H{
"code": http.StatusOK,
"error": "Welcome server 02",
},
)
})

return e
}

func main() {
server01 := &http.Server{
Addr: ":8080",
Handler: router01(),
ReadTimeout: 5 * time.Second,
WriteTimeout: 10 * time.Second,
}

server02 := &http.Server{
Addr: ":8081",
Handler: router02(),
ReadTimeout: 5 * time.Second,
WriteTimeout: 10 * time.Second,
}

g.Go(func() error {
return server01.ListenAndServe()
})

g.Go(func() error {
return server02.ListenAndServe()
})

if err := g.Wait(); err != nil {
log.Fatal(err)
}
}
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测试效果图如下：

自定义的struct绑定form-data
package main

import "github.com/gin-gonic/gin"

type StructA struct {
FieldA string `form:"field_a"`
}

type StructB struct {
NestedStruct StructA
FieldB string `form:"field_b"`
}

type StructC struct {
NestedStructPointer *StructA
FieldC string `form:"field_c"`
}

type StructD struct {
NestedAnonyStruct struct {
FieldX string `form:"field_x"`
}
FieldD string `form:"field_d"`
}

func GetDataB(c *gin.Context) {
var b StructB
c.Bind(&b)
c.JSON(200, gin.H{
"a": b.NestedStruct,
"b": b.FieldB,
})
}

func GetDataC(c *gin.Context) {
var b StructC
c.Bind(&b)
c.JSON(200, gin.H{
"a": b.NestedStructPointer,
"c": b.FieldC,
})
}

func GetDataD(c *gin.Context) {
var b StructD
c.Bind(&b)
c.JSON(200, gin.H{
"x": b.NestedAnonyStruct,
"d": b.FieldD,
})
}

func main() {
r := gin.Default()
r.GET("/getb", GetDataB)
r.GET("/getc", GetDataC)
r.GET("/getd", GetDataD)

r.Run()
}
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直接看效果：
输入http://127.0.0.1:8080/getb?field_a=wyf&field_b=hhh
输出{"a":{"FieldA":"wyf"},"b":"hhh"}

输入http://localhost:8080/getc?field_a=hello&field_c=world
输出{"a":{"FieldA":"hello"},"c":"world"}

输入http://localhost:8080/getd?field_x=hello&field_d=worl
输出{"d":"worl","x":{"FieldX":"hello"}}

但是以下的格式是无法绑定的：

type StructX struct {
X struct {} `form:"name_x"` // HERE have form
}

type StructY struct {
Y StructX `form:"name_y"` // HERE hava form
}

type StructZ struct {
Z *StructZ `form:"name_z"` // HERE hava form
}
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版权声明：本文为CSDN博主「丙申」的原创文章，遵循CC 4.0 BY-SA版权协议，转载请附上原文出处链接及本声明。
原文链接：https://blog.csdn.net/u013210620/java/article/details/82806846