YAML 解析带有动态键的 Go 代码
要解析 YAML 文件中包含动态键的 Go 代码,请遵循以下步骤:
1. 安装 yaml 库:
<code class="sh">go get gopkg.in/yaml.v2</code>
2. 定义模型结构:
创建结构体以表示 YAML 数据。如果您知道所有可能的键,可以使用常规字段定义它们,否则可以使用 map[string]interface{} 字段包含动态键。
3. 使用自定义 Unmarshaler(可选):
如果您需要自定义如何解析 YAML 数据,则可以使用自定义 Unmarshaler。这可以帮助您处理动态键或其他复杂解析场景。
4. 解析 YAML 数据:
使用 yaml.Unmarshal 函数解析 YAML 数据并将其反序列化为模型结构。
示例:
以下示例演示如何解析具有动态键的 YAML 文件:
<code class="go">package main import ( "fmt" "gopkg.in/yaml.v2" ) var data = ` --- development: skip-header-validation: true V1: current: "1.0.0" mime_types: - application/vnd.company.jk.identity+json; - application/vnd.company.jk.user+json; - application/vnd.company.jk.role+json; - application/vnd.company.jk.scope+json; - application/vnd.company.jk.test+json; skip-mime-type-validation: true skip-version-validation: true V2: current: "2.0.0" mime_types: - application/vnd.company.jk.identity+json; - application/vnd.company.jk.user+json; - application/vnd.company.jk.role+json; - application/vnd.company.jk.scope+json; - application/vnd.company.jk.test+json; ` type MajorVersion struct { Current string `yaml:"current"` MimeTypes []string `yaml:"mime_types"` SkipVersionValidation bool `yaml:"skip-version-validation"` SkipMimeTypeValidation bool `yaml:"skip-mime-type-validation"` } type Environment struct { SkipHeaderValidation bool Versions map[string]MajorVersion `yaml:",inline"` } func main() { e := map[string]Environment{} if err := yaml.Unmarshal([]byte(data), &e); err != nil { fmt.Println(err.Error()) } fmt.Printf("%#v\n", e) }</code>
输出:
map[string]main.Environment{ "development": { SkipHeaderValidation: true, Versions: { "V1": { Current: "1.0.0", MimeTypes: {"application/vnd.company.jk.identity+json;", "application/vnd.company.jk.user+json;", "application/vnd.company.jk.role+json;", "application/vnd.company.jk.scope+json;", "application/vnd.company.jk.test+json;"}, SkipVersionValidation: true, SkipMimeTypeValidation: true, }, "V2": { Current: "2.0.0", MimeTypes: {"application/vnd.company.jk.identity+json;", "application/vnd.company.jk.user+json;", "application/vnd.company.jk.role+json;", "application/vnd.company.jk.scope+json;", "application/vnd.company.jk.test+json;"}, SkipVersionValidation: false, SkipMimeTypeValidation: false, }, }, }, }
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