3

这里很时髦。我正在解析一个包含所有国家/地区列表的文件:

{
    "countries": [
      {
        "id": "1",
        "sortname": "AF",
        "name": "Afghanistan"
      },
      {
         "id": "2",
         "sortname": "AL",
         "name": "Albania"
      },
      ...
    ]
}

我正在尝试将每个国家/地区读入一个可解析的对象,然后我可以在我的代码中处理:

String countriesJson = new File(classLoader.getResource('countries.json').getFile()).text
def countries = new JsonSlurper().parseText(countriesJson)

countries.each { country ->
    String sortname = country.sortname
    String name = country.name

    // do something with all this info and then move on to the next country
}

当我运行此代码时,我得到MissingPropertyException

Exception in thread "main" groovy.lang.MissingPropertyException: No such property: sortname for class: java.util.LinkedHashMap$Entry
        at org.codehaus.groovy.runtime.ScriptBytecodeAdapter.unwrap(ScriptBytecodeAdapter.java:53)
        at org.codehaus.groovy.runtime.callsite.GetEffectivePojoPropertySite.getProperty(GetEffectivePojoPropertySite.java:66)
        at org.codehaus.groovy.runtime.callsite.AbstractCallSite.callGetProperty(AbstractCallSite.java:296)
        ...rest of stacktrace omitted for brevity

我可以做些什么来解决这个问题,以便我可以将数组 JSON 对象解析为我的sortnamename变量?

4

1 回答 1

2

假设您将 json 包装在其中,{ ... }因此它是有效的(与问题不同),您需要首先获取国家对象。

所以:

countries.countries.each { country ->
    String sortname = country.sortname
    String name = country.name

    // do something with all this info and then move on to the next country
}

也许将变量重命名countries为不那么令人困惑的东西?

于 2018-03-23T08:02:26.717 回答