Question

在Akka HTTP中路由DSL与正则表达式不正确匹配。我正在使用Akka HTTP版本10.8.1。

我正在按照以下文档中的示例进行操作 https://doc.akka.io/docs/akka-http/current/routing-dsl/path-matchers.html，例如：

// matches e.g. /foo/bar123 and extracts "123" as a String
path("foo" / """bar(\d+)""".r)

这里是我所拥有的：

2条路径和2条路线

roles/members/01cb21e8-7368-4825-856f-c87b44b8c9a0
path("roles" / "members" / s"($uuidRegex)".r) { token =>

roles/permissions/RoleUuid:01cb21e8-7368-4825-856f-c87b44b8c9a0
path("roles" / "permissions" / s"RoleUuid:($uuidRegex)".r) { token =>

在处理程序中：

val uuidRegex = """[\da-fA-F]{8}-[\da-fA-F]{4}-[\da-fA-F]{4}-[\da-fA-F]{4}-[\da-fA-F]{12}"""

override val routes: Route = extractRequestContext { implicit rc =>
  path("roles" / "members" / s"($uuidRegex)".r) { token => 
    get { rc => 
      val method = "get role members"
      logger.info(s"RoleUUID: method(RoleUUID): $method")
      logger.info(s"RoleUUID: token: $token")
      val roleUuidOpt = Try {
        logger.info(s"RoleUUID: stringToId: converting $token")
        RoleUuid(UUID.fromString(token))
        } 
        logger.info(s"RoleUUID: roleUuid: $roleUuidOpt")
        rolesOps(rc) 
          .getMembers(roleUuidOpt.get)
          .map(x => completeStr(x.asJson.noSpaces))
        }
    } ~ 
path("roles" / "permissions" / s"RoleUuid:($uuidRegex)".r) { token =>
      get { rc =>
        val method = "get role permissions"
        logger.info(s"RoleUUID: method(RoleUUID): $method")
        logger.info(s"RoleUUID: token: $token")
        val roleUuidOpt = Try { 
          logger.info(s"RoleUUID: stringToId: converting $token")
          RoleUuid(UUID.fromString(token))
        } 
        logger.info(s"RoleUUID: roleUuid: $roleUuidOpt")
        rolesOps(rc)
          .getRolePermissions(roleUuidOpt.get)
          .map(x => completeStr(x.asJson.noSpaces))
      } 
    } 
  }

第一个路径（只有uuid）

roles/members/01cb21e8-7368-4825-856f-c87b44b8c9a0

有效，就是匹配了，我看到了日志语句

第二条路径（带有标识符和uuid）角色/权限/ RoleUuid：01cb21e8-7368-4825-856f-c87b44b8c9a0

不起作用，它不匹配，我看不到日志语句因为我没有看到第一条日志语句，所以我假设它从未匹配

有效路径与无效路径之间的唯一区别是路径匹配器中的前缀。

Answer 1

使用Scala's String interpolation（注意最后一个路径段前面的s和$前面的uuidRegex）：

val uuidRegex = """[\da-fA-F]{8}-[\da-fA-F]{4}-[\da-fA-F]{4}-[\da-fA-F]{4}-[\da-fA-F]{12}"""

path("roles" / "members" / s"RoleId:($uuidRegex)".r) {
  // ...
}

例如，上面的路径匹配对以下内容的调用：

http://yourhost:yourport/roles/members/RoleId:d11ffab5-ab40-4e55-9e3e-621df1992470

文档中的Akka HTTP路由DSL示例不起作用

1 个答案: