解决了跨域问题

src/loginserver/apis/loginserver.go

@@ -5,7 +5,7 @@ import (
 	// "encoding/base64"
 	// "encoding/json"
 	// "github.com/tidwall/gjson"
-	"gopkg.in/gin-gonic/gin.v1"
+	"github.com/gin-gonic/gin"
 	// "io"
 	// "io/ioutil"
 	"log"

src/loginserver/router.go

 package main
 
 import (
+	"github.com/gin-contrib/cors"
 	_ "github.com/gin-gonic/autotls"
-	"gopkg.in/gin-gonic/gin.v1"
+	"github.com/gin-gonic/gin"
 	. "loginserver/apis"
 	// "net/http"
 	// "log"
@@ -10,6 +11,7 @@ import (
 
 func initRouter() *gin.Engine {
 	router := gin.Default()
+	router.Use(cors.Default())
 	router.POST("user/login", UserLoginApi)
 	router.POST("user/register", UserRegisterApi)
 	router.POST("user/checkusername", CheckUserNameRepeatApi)