問題描述

我正在嘗試使用 Groovy 和 Snakeyaml 解析以下 YAML 文件(顯然我已經清理了數據，但足以證明問題):

I am attempting to parse the following YAML file using Groovy and Snakeyaml (clearly I have sanitised the data but it is sufficient to demonstrate the issue):

---
info:
  summary: Snakeyaml Issue
examples:
  - 1st example:
      name: Example 1
      sublist:
        - 0.1:
           foo: bar

我希望得到以下陳述:

println resource.info.summary
println resource.examples."1st example".name
println resource.examples."1st example".sublist."0.1"

屈服:

Snakeyaml Issue
Example 1
[foo:bar]

和:

println resource.examples."1st example".sublist."0.1".foo

屈服:

bar

但是，實際輸出來自:

println resource.info.summary
println resource.examples."1st example".name
println resource.examples."1st example".sublist."0.1"
println resource.examples."1st example".sublist."0.1".foo

是:

Snakeyaml Issue
[Example 1]
[[[foo:bar]]]
[[bar]]

我只能通過包含列表索引來獲得所需的輸出:

I can only get the desired output by including the list indicies:

println resource.info.summary
println resource.examples[0]."1st example".name
println resource.examples[0]."1st example".sublist[0]."0.1"
println resource.examples[0]."1st example".sublist[0]."0.1".foo

這似乎是不必要的.也許我誤解了數據的結構?

which seems unnecessary. Perhaps I am misunderstanding the structure of the data?

為了完整起見，我用來說明問題的常規代碼如下所示(我從網上抓取了 CustomerResolver 代碼，以便將浮點數保持為字符串):

For completeness, the groovy code that I am using to illustrate the issue is shown below (I grabbed the CustomerResolver code off the web so that it would keep floats as strings):

import org.yaml.snakeyaml.DumperOptions
import org.yaml.snakeyaml.Yaml
import org.yaml.snakeyaml.constructor.Constructor
import org.yaml.snakeyaml.nodes.Tag
import org.yaml.snakeyaml.representer.Representer
import org.yaml.snakeyaml.resolver.Resolver

def fileName = "example.yaml"
def Yaml yaml = new Yaml(new Constructor(), new Representer(), new DumperOptions(),
    new CustomResolver())
def resource = yaml.load(new File(fileName).newInputStream())

println resource.info.summary
println resource.examples."1st example".name
println resource.examples."1st example".sublist."0.1"
println resource.examples."1st example".sublist."0.1".foo

class CustomResolver extends Resolver {

    /*
     * Do not resolve float and timestamp
     */

    protected void addImplicitResolvers() {
        addImplicitResolver(Tag.BOOL, BOOL, "yYnNtTfFoO");
        addImplicitResolver(Tag.INT, INT, "-+0123456789");
        addImplicitResolver(Tag.MERGE, MERGE, "<");
        addImplicitResolver(Tag.NULL, NULL, "~nN

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