groovy - SOAPUI，即使 json 数据正确，JsonSlurper 也会返回 null

Question

null在 SOAPUI 中，即使 json 数据正确，JsonSlurper 也会返回。下面jsonObj给出null. 是因为冗长的数据还是其他原因。我验证了我的数据格式及其正确性。

import groovy.json.JsonSlurper
def jsonObj = new JsonSlurper().parseText( messageExchange.response.contentAsString )

Answer 1

好吧，那就别去了。这可能是由于在 Java 6 上运行 SoapUI（它不适用于 Java 7）或没有。

因此，解决方法。

在 Internet 上找到的示例不一定有用，因为：

• 它们可能是由不一定精通 Groovy 的人编写的
• 这些示例隐藏了一个基本问题：从 SoapUI 获取的对象似乎在不同的上下文中表现不同，例如在 SOAP 或 REST 上下文中，对象的实际类是不同的，尽管可以执行相同的方法调用，但返回的值将不同（您得到的是 XML 字符串而不是 JSON 字符串）。由于 Groovy 是弱类型并鼓励使用鸭子类型，因此给出的示例可能会以意想不到的方式失败，并且不会立即显现出来。
• 这些示例缺少日志记录和断言。

这些说，我们走吧。我们想要获取可以在响应中找到的“InquiryId”的值，我们知道它由 JSON 字符串表示。

// Get projet associated to current "testRunner" by walking up the tree of objects    
// "testRunner" is probably a http://www.soapui.org/apidocs/com/eviware/soapui/impl/wsdl/support/AbstractTestCaseRunner.html    

def myProject = testRunner.testCase.testSuite.project

// "myProject" is probably a http://www.soapui.org/apidocs/com/eviware/soapui/impl/wsdl/WsdlProject.html 
// Let's verify this! If we have guessed wrongly, the script will fail

assert myProject instanceof com.eviware.soapui.impl.wsdl.WsdlProject

// Get the appropriate TestStep by walking down the tree of objects
// It is recommended to use getXByName() throughout unless you want to 
// confuse yourself by using mixed accessor styles working only on some
// classes that may appear in this expression:

def myStep = myProject.getTestSuiteByName("Global test suite").getTestCaseByName("Test Case Foo").getTestStepByName("Create Inquiry")

// The result is probably a http://www.soapui.org/apidocs/com/eviware/soapui/impl/wsdl/teststeps/WsdlTestStep.html
// Let's verify this! If we have guessed wrongly, the script will fail

assert myStep instanceof com.eviware.soapui.impl.wsdl.teststeps.WsdlTestStep

// Getting JSON string can be done like this. One can also do
// 'otherStep.getPropertyValue("reponse") as String' 

def jsonString = otherStep.testRequest.response.contentAsString

// Let's log what we got here:     

log.info "Returned JSON string is '${jsonString}'"

// What we cannot do with the 'jsonString' is:
// Give it to SoapUI's "XMLHolder" for parsing, because, in spite of people
// saying so, it does not seem to understand JSON.
// Give it to JsonSlurper because JsonSlurper returns null
// So we extract the value by scanning the String directly using a regular 
// expression. See http://groovy.codehaus.org/Regular+Expressions
// The pattern say: Look for something that starts with 
// {"InquiryId":"
// and ends with
// "}
// and grab the characters between these endings.
// We then look for "anywhere in the passed String" for the above using "find()"
// rather than "match()" which would demand precise matching of the whole String.

def pattern = ~/\{"InquiryId":"(.+?)"\}/    
def matcher = pattern.matcher(jsonString)

if (matcher.find()) {    
   def inqId = matcher.group(1)    
   log.info "Returned string is '${inqId}'"
   // We are done here
   return inqId    
}    
else {    
   throw new IllegalArgumentException("Could not extract InquiryId from '$jsonString'")    
}