使用Wiremock检查请求正文中的空值 [英] Check for null values in request body using Wiremock

问题描述

我正在尝试设置一个Wiremock存根，如果JSON有效负载中的任何字段为空值，该存根将返回400错误.基本上是模拟一个Bad Request.我一直在尝试使用匹配json键的任何小写字符串的正则表达式，但似乎不喜欢它.我找不到我想要的在线内容的任何示例，因此不确定是否可能.

I am trying to setup a wiremock stub that will return a 400 error if any field has a null value in the json payload. Basically to simulate a Bad Request. I've been trying with a regex that matches any lowercase string for the json key but it doesn't seem to like it. I can't find any examples of what I want online so not sure if it's even possible.

我的错误请求正文:

{
  "cat": null,
  "dog": {
    "id": 1344
},
  "horse": {
    "id": 1
},
  "fish": 1
}

我的存根:

wireMockServer.stubFor(post(urlEqualTo("/sample-api"))
            .withRequestBody(matchingJsonPath("$.^[a-z]*", equalTo(null)))
            .willReturn(aResponse()
                    .withStatus(400)
                    .withHeader("Content-Type", "application/json")))

在此示例中，我希望存根匹配"cat"，因为它的值为null.事实并非如此.谁能告诉我我在做什么错?

In this example I would expect the stub to match "cat" as the value of it is null. This isn't the case. Can anyone tell me what I'm doing wrong?

推荐答案

在 WireMock文档中，请求匹配 源代码，其中引用了所使用的 com.jayway.jsonpath.JsonPath 库. build.gradle 指的是版本2.4.0.Jayway JSON路径库的文档可以在其 Github项目页面中找到.有一个很好的，但绝不是完美的在线评估者这里.

In the WireMock documentation on Request Matching the section on JSON Path matching. In the source code there is a reference to com.jayway.jsonpath.JsonPath library used. The build.gradle refers to version 2.4.0. The documentation for the Jayway JSON Path library can be found on their Github project page. There is a good, but by no means perfect online evaluator here.

WireMock文档仅以" matchesJsonPath ".Jayway文档中有一个在线示例:

The WireMock documentation only shows support for Regular Expression for the node values in the form of the "matchesJsonPath". In the Jayway documenatation there is an online example: $..book[?(@.author =~ /.*REES/i)]. For this reason the only approach is to name all the nodes that are not allowed to be null.

在下面的示例映射中，无论深度如何，所有提到的节点都将进行测试(请参阅@id).如果所有提及的节点都不为空，但某些未提及的节点为null，则不会触发此映射.

In the below example mapping all the mentioned nodes will be tested, regardless of their depth (see @id). This mapping will not trigger if all the mentioned nodes are not null, but some unmentioned ones are.

{
  "request": {
    "urlPattern": "/sample-api",
    "method": "GET",
    "bodyPatterns" : [ {
      "matchesJsonPath" : "$..[?(@.cat == null || @.dog == null || @.horse == null || @.fish == null || @.id == null)]"
    } ] 
  },
  "response": {
    "status": "400",
    "headers": {
      "Content-Type": "application/json; charset=utf-8"
    },
    "jsonBody": {
      "message": "some sapi message"
    }
  }
}

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