gin中运行多个服务

运行服务的返回类型为 ：http.Handler 。gin.New(),gin.Default() 返回的就是此类型。
使用&http.Server{....} 设置服务参数
使用g.Go(func () error{ return server.ListenAndServe()}) 开启一个服务

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package main   import (     "github.com/gin-gonic/gin"     "golang.org/x/sync/errgroup"     "log"     "net/http"     "time" )   var (     g errgroup.Group )   func router01() http.Handler {     e := gin.New()     e.Use(gin.Recovery())     e.GET("/", func(context *gin.Context) {         context.String(200, "router01")     })     return e } func router02() http.Handler {     e := gin.New()     e.Use(gin.Recovery())     e.GET("/", func(context *gin.Context) {         context.String(200, "router02")     })     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.Error())     }   }