线程中的例外“主” java.lang.classcastException：java.util.linkedhashmap class de Class java.util.list。

Question

使用REST保证Java框架时，我会收到以下错误。

Exception in thread "main" java.lang.ClassCastException: class java.util.LinkedHashMap cannot be cast to class java.util.List (java.util.LinkedHashMap and java.util.List are in module java.base of loader 'bootstrap')
    at io.restassured.path.json.JsonPath.getList(JsonPath.java:375)
    at qaflightsuppliers.QaFlightDXBLONResponseDebugValidation.main(QaFlightDXBLONResponseDebugValidation.java:94)

以下是我的代码。请更正我的代码。

List<String> jsonMapStringObjectResponse = response.jsonPath().get("recommendation");
        
for (int i = 0; i <= jsonMapStringObjectResponse.size(); i++)
{
    List<String> jsonMapObjectResponse = response.jsonPath().getList("recommendation[" + i + "]");
    System.out.print("ValidatingAirlineName="+jsonMapObjectResponse.add("validatingAirlineName"));
}   

Answer 1

您正在尝试将属性推荐作为list ，但实际上在JSON响应中，它是MAP。

因此，您必须更改：

List<String> jsonMapObjectResponse = response.jsonPath().getList("recommendation[" + i + "]");

要从

Map<String, String> jsonMapObjectResponse = response.jsonPath().getMap("recommendation[" + i + "]");
// example below
System.out.println(jsonMapObjectResponse.get("validatingAirlineName"));

这个问题您的JSON可能看起来像这样：

[
  {
    "id": 1,
    "recommendation": {
      "validatingAirlineName": "...",
      "adultBaseFare": "...",
      "adultTaxFare": "..."
    }
  },
  {
    "id": 2,
    "recommendation": {
      "validatingAirlineName": "...",
      "adultBaseFare": "...",
      "adultTaxFare": "..."
    }
  }
]

通过此演示进行了测试和验证，这可能也是一个很好的阅读资源：

• https://devqa.io/parse-parse-json-response-rest-rest-ashured/