如何将数据写入yaml文件

Question

我正在尝试构建一个简单的 Windows 窗体，该窗体应该将值写入 yaml 配置文件。发布后，exe 文件保存在config目录中。

private void buttonSaveSettings_Click(object sender, EventArgs e)
{
    string hostname = hostnameBox.Text;

    var path = "C:\\Users\\Nick\\Desktop\\packages\\doctrine.yaml";
    var deserializer = new YamlDotNet.Serialization.Deserializer();

    try
    {
        using (var reader = new StreamReader(path))
        {
            var obj = deserializer.Deserialize<Dictionary<object, object>>(reader);
            var doctrine = (Dictionary<object, object>)obj["doctrine"];
            var dbal = (Dictionary<object, object>)doctrine["dbal"];
            var connections = (Dictionary<object, object>)dbal["connections"];
            var dict = (Dictionary<object, object>)connections["default"];

            // TODO: Modify the dictionary
            // dict["dbname"] = "test";

            dict["dbname"] = "test";

            using (StreamWriter writer = new StreamWriter(path))
            {
                // Save Changes
                var serializer = new YamlDotNet.Serialization.Serializer();
                serializer.Serialize(writer, obj);
            }
        }
    }
    catch (Exception exception)
    {
        dumpBox.Text = exception.Message;
    }
}

这是 Doctrine 配置文件 (packages/doctrine.yaml)

doctrine:
    dbal:
        default_connection: default
        connections:
            default:
                dbname: dbname
                user: user
                password: password
                host: host
                driver: pdo_mysql
                server_version: '10.0.38-MariaDB'

        # IMPORTANT: You MUST configure your server version,
        # either here or in the DATABASE_URL env var (see .env file)
        #server_version: '5.7'
    orm:
        auto_generate_proxy_classes: true
        naming_strategy: doctrine.orm.naming_strategy.underscore_number_aware
        auto_mapping: true
        mappings:
            App:
                is_bundle: false
                type: annotation
                dir: '%kernel.project_dir%/src/Entity'
                prefix: 'App\Entity'
                alias: App

我不确定该任务是否可以仅通过使用 System.IO 来处理，因为我们可能需要一些额外的解析器。

问题是，如何重写属于doctrine/dbal/connections/default的每个键的值？

Answer 1

您可以执行以下操作：

• 首先安装YamlDotNet （如果您使用.NET Core dotnet add package YamlDotNet --version 8.1.2）或（如果您使用包管理器PM> Install-Package YamlDotNet -Version 8.1.2）

根据您的需求调整代码

var path = "/path/to/file.yaml";
var deserializer = new YamlDotNet.Serialization.Deserializer();

try {
    using var reader = new StreamReader(path);
    var obj = deserializer.Deserialize<Dictionary<object, object>>(reader);
    var doctrine = (Dictionary<object, object>)obj["doctrine"];
    var dbal = (Dictionary<object, object>)doctrine["dbal"];
    var connections = (Dictionary<object, object>)dbal["connections"];
    var dict = (Dictionary<object, object>)connections["default"];
    reader.Close()

    // TODO: Modify the dictionary
    // dict["dbname"] = "test";                    

    using var writer = new StreamWriter(path);
    // Save Changes
    var serializer = new YamlDotNet.Serialization.Serializer();
    serializer.Serialize(writer, obj);
} catch (Exception e) {
    // TODO: manage
}