在vapor 3中使用FluentMySQL

Question

几天来，我一直在尝试将fluent-mysql依赖项添加到我的vapor项目中，以便从项目中查询我独立的mysql数据库。然而，我似乎总是得到某种类型的错误，例如，当我尝试vapor update时，它永远不会完成。(我已经离开它几个小时了)，我也尝试过swift package update，但出现了同样的错误。我现在可以使用vapor update了，但是我仍然收到两个错误'mysql/udf_registration_types.h' file not found with <angled> include; use "quotes" instead

和Could not build Objective-C module 'CMySQL'

唯一更改的是package.swift，它现在是这样的：

import PackageDescription

let package = Package(
    name: "iPadLocator",
    products: [
        .library(name: "App", targets: ["App"]),
        .executable(name: "Run", targets: ["Run"])
    ],
    dependencies: [
        .package(url: "https://github.com/vapor/vapor.git", .upToNextMajor(from: "2.2.0")),
        .package(url: "https://github.com/vapor/leaf-provider.git", .upToNextMajor(from: "1.1.0")),
        .package(url: "https://github.com/vapor/fluent-mysql.git", .upToNextMajor(from: "2.0.0"))

    ],
    targets: [
        .target(
            name: "App",
            dependencies: ["Vapor", "LeafProvider", "MySQLDriver"],
            exclude: ["Config", "Database", "Public", "Resources"]
        ),
        .target(name: "Run", dependencies: ["App"]),
        .testTarget(name: "AppTests", dependencies: ["App", "Testing"])
    ]
)

提前感谢您的帮助。这是我的第一个stackOverflow问题，如果这个问题很糟糕，我很抱歉。我正在运行vapor Toolbox 3.1.7和Vapor framework 2.4.4，我已经安装了mysql和cmysql，并且是最新的。

Answer 1

您想使用Vapor 2还是Vapor 3？(忽略工具箱的版本)。如果你想要Vapor2，那么你所拥有的就是正确的--你只需要把依赖从MySQLDriver改为MySQLProvider。

如果您想要Vapor 3，那么您需要将所有依赖项更改为如下所示

// swift-tools-version:4.0
import PackageDescription

let package = Package(
    name: "TILApp",
    dependencies: [
        //  A server-side Swift web framework.
        .package(url: "https://github.com/vapor/vapor.git", from: "3.0.0"),
        .package(url: "https://github.com/vapor/fluent-mysql.git", from: "3.0.0"),
        .package(url: "https://github.com/vapor/leaf.git", from: "3.0.0-rc"),
    ],
    targets: [
        .target(name: "App", dependencies: ["FluentMySQL", "Vapor", "Leaf"]),
        .target(name: "Run", dependencies: ["App"]),
        .testTarget(name: "AppTests", dependencies: ["App"]),
    ]
)

Answer 2

出现这些错误的原因是因为Vapor3不包含“Droplet”、“Resource”或“ResourceRepresentable”类型。好消息是你成功地安装了vapor 3依赖项，坏消息是看起来要使用它们，你必须让你的项目vapor 3更好。好消息是，vapor 3比Vapor 2性能更好。