增加jwt主动失效功能（next:多点登录限制

QMPlusServer/model/sysModel/sys_jwt_blacklist.go

@@ -0,0 +1,23 @@
+package sysModel
+
+import (
+	"gin-vue-admin/init/qmsql"
+	"github.com/jinzhu/gorm"
+)
+
+type JwtBlacklist struct {
+	gorm.Model
+	Jwt string `gorm:"type:text"`
+}
+
+func(j *JwtBlacklist)JsonInBlacklist()(err error){
+	err = qmsql.DEFAULTDB.Create(j).Error
+	return
+}
+
+
+//判断JWT是否在黑名单内部
+func (j *JwtBlacklist)IsBlacklist(Jwt string)(bool){
+	isNotFound := qmsql.DEFAULTDB.Where("jwt = ?",Jwt).First(j).RecordNotFound()
+	return !isNotFound
+}

QMPlusServer/model/sysModel/sys_user.go

@@ -29,9 +29,9 @@ type SysUser struct {
 func (u *SysUser) Regist() (err error, userInter *SysUser) {
 	var user SysUser
 	//判断用户名是否注册
-	findErr := qmsql.DEFAULTDB.Where("username = ?", u.Username).First(&user).Error
-	//err为nil表明读取到了 不能注册
-	if findErr == nil {
+	notResigt := qmsql.DEFAULTDB.Where("username = ?", u.Username).First(&user).RecordNotFound()
+	//notResigt为false表明读取到了 不能注册
+	if !notResigt {
 		return errors.New("用户名已注册"), nil
 	} else {
 		// 否则 附加uuid 密码md5简单加密 注册