# JSON Parsing. Cannot cast object with class 'java.lang.Integer' to class 'java.util.Map'

**URL:** <https://forum.katalon.com/t/json-parsing-cannot-cast-object-with-class-java-lang-integer-to-class-java-util-map/111015>\
**Category:** API Testing\
**Tags:** api-testing, api, katalon-studio\
**Created:** [December 15, 2023, 4:15pm UTC](https://forum.katalon.com/t/json-parsing-cannot-cast-object-with-class-java-lang-integer-to-class-java-util-map/111015 "2023-12-15T16:15:20Z")\
**Posts on this page:** 12\
**Page:** 1

<div class="post-metadata">

**Author:** ![yakovlieva.olena](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/yakovlieva.olena/32/20464_2.png) [@yakovlieva.olena](https://forum.katalon.com/u/yakovlieva.olena)\
**Post date:** [December 15, 2023, 4:15pm UTC](https://forum.katalon.com/t/json-parsing-cannot-cast-object-with-class-java-lang-integer-to-class-java-util-map/111015/1 "2023-12-15T16:15:20Z")

</div>

Hi,

I work with json that is REST api response (pretty is about 11000 lines).  
I can’t parse it. What is wrong?

response status 200 OK.

`Cannot cast object '200' with class 'java.lang.Integer' to class 'java.util.Map'`

```auto
import com.kms.katalon.core.testobject.RequestObject

import com.kms.katalon.core.testobject.ResponseObject

import com.kms.katalon.core.webservice.verification.WSResponseManager

import groovy.json.JsonSlurper

RequestObject request = WSResponseManager.getInstance().getCurrentRequest()

ResponseObject response = WSResponseManager.getInstance().getCurrentResponse()

responseString= response.toString()

JsonSlurper js = new JsonSlurper()

Map m = js.parseText(responseString)

String tracksData = m["tracksData"]

println m.get("tracksData").size()

```

JSON looks like:

```auto
{
    "tracksData": [
        {
            "name": "1",
            "area": "Center",           
        }
    ],
    "avgByArea": [
        {
            "area": "Center",
            "avg_wear_coefficient": 0.004851138365159119
        }
    ],
    
    "wearCoefficientOverTunnelmeter": [
        {
            "tunnelmeter": 22,
            "wear_coefficient": 0.002479905440550177,
            "weartype": "Inspection",
            "area": "Gauge",
            "track_name": "29",
            "from": "2023-01-13T12:30:46.000Z"
        },
        {
            "tunnelmeter": 22,
            "wear_coefficient": 0.005698029177732199,
            "weartype": "Inspection",
            "area": "Gauge",
            "track_name": "28",
            "from": "2023-01-13T12:30:46.000Z"
        }
    ]
}

```

error:

```auto
Verification FAILED.

Reason:

org.codehaus.groovy.runtime.typehandling.GroovyCastException: Cannot cast object '200' with class 'java.lang.Integer' to class 'java.util.Map'

at WSVerification1702655914901.run(WSVerification1702655914901:15)

at com.kms.katalon.core.main.ScriptEngine.run(ScriptEngine.java:194)

at com.kms.katalon.core.main.ScriptEngine.runScriptAsRawText(ScriptEngine.java:119)

at com.kms.katalon.core.main.WSVerificationExecutor.runScript(WSVerificationExecutor.java:180)

at com.kms.katalon.core.main.WSVerificationExecutor.doExecute(WSVerificationExecutor.java:174)

at com.kms.katalon.core.main.WSVerificationExecutor.processExecutionPhase(WSVerificationExecutor.java:157)

at com.kms.katalon.core.main.WSVerificationExecutor.accessMainPhase(WSVerificationExecutor.java:149)

at com.kms.katalon.core.main.WSVerificationExecutor.execute(WSVerificationExecutor.java:131)

at com.kms.katalon.core.main.TestCaseMain.runWSVerificationScript(TestCaseMain.java:150)

at com.kms.katalon.core.main.TestCaseMain$runWSVerificationScript$0.call(Unknown Source)

at TempTestCase1702655910490.run(TempTestCase1702655910490.groovy:25)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:77)

at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)

```

P.S. I need to parse this JSON to calculate wearCoefficientOverTunnelmeter.track\_name with defined value

Thank you in advance for your help!

---

<div class="post-metadata">

**Author:** ![viewxy](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/viewxy/32/22831_2.png) [@viewxy](https://forum.katalon.com/u/viewxy)\
**Post date:** [December 18, 2023, 12:05pm UTC](https://forum.katalon.com/t/json-parsing-cannot-cast-object-with-class-java-lang-integer-to-class-java-util-map/111015/2 "2023-12-18T12:05:53Z")

</div>

I think that, this way your verification script gets the response status code 200, and tries to parse it.  
I tried to replicate it and got the same error, the error occures with this line:

```auto
Map m = js.parseText(responseString)

```

if you change ‘Map’ to ‘def’ like this, and print right after:

```auto
def m = js.parseText(responseString)
println(m)

```

No error, but the printed line is 200 and nothing else, I tried with a bad url expecting 500 status code and the printed line was 500.So it is definitely the status code that is being parsed and printed.

I think for further help I would need to know what exactly you want to achieve. What do you mean by calculating, do you mean to verify track\_name and compare with a predefined value? Or overwrite it with a predefined value?

---

<div class="post-metadata">

**Author:** ![yakovlieva.olena](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/yakovlieva.olena/32/20464_2.png) [@yakovlieva.olena](https://forum.katalon.com/u/yakovlieva.olena)\
**Post date:** [December 18, 2023, 12:28pm UTC](https://forum.katalon.com/t/json-parsing-cannot-cast-object-with-class-java-lang-integer-to-class-java-util-map/111015/3 "2023-12-18T12:28:45Z")

</div>

@viewxy thank you for your answer.

initially I need to check if FE changes are applied in defined use cases.

a TC is planned:

1. API call
2. FE changes
3. the same API call to compare the target value\*

\*target value - a number of wearCoefficientOverTunnelmeter.track\_name records with defined track\_name value  
e.g. number of `"track_name": "29"` objects.

Thank you for your help!

---

<div class="post-metadata">

**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\
**Post date:** [December 18, 2023, 1:22pm UTC](https://forum.katalon.com/t/json-parsing-cannot-cast-object-with-class-java-lang-integer-to-class-java-util-map/111015/4 "2023-12-18T13:22:33Z")

</div>

Try the following change:

```auto
ResponseObject response = WSResponseManager.getInstance().getCurrentResponse()

// responseString= response.toString()

JsonSlurper slurper = new JsonSlurper()

//Map m = slurper.parseText(responseString)

Map m = slurper.parseText(response.getResponseBodyContent())

```

You should check the javadoc of ResponseObject

[https://api-docs.katalon.com/com/kms/katalon/core/testobject/ResponseObject.html](https://api-docs.katalon.com/com/kms/katalon/core/testobject/ResponseObject.html)

You can read the source of ResponseObject here

> <https://github.com/katalon-studio/katalon-studio-testing-framework/blob/master/Include/scripts/groovy/com/kms/katalon/core/testobject/ResponseObject.java>

---

<div class="post-metadata">

**Author:** ![yakovlieva.olena](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/yakovlieva.olena/32/20464_2.png) [@yakovlieva.olena](https://forum.katalon.com/u/yakovlieva.olena)\
**Post date:** [December 18, 2023, 3:02pm UTC](https://forum.katalon.com/t/json-parsing-cannot-cast-object-with-class-java-lang-integer-to-class-java-util-map/111015/5 "2023-12-18T15:02:13Z")

</div>

@kazurayam Thank you for your help. The response is parsed successfully.

But another problem has arisen. It seems because of the response big size.

Verification status is incomplete when I try to interact with parsed response.

 ![image](https://europe1.discourse-cdn.com/katalon/original/3X/f/3/f30715131314fc5bec15609f343223d2a681ebe9.png)

```auto
import com.kms.katalon.core.testobject.RequestObject
import com.kms.katalon.core.testobject.ResponseObject
import com.kms.katalon.core.webservice.verification.WSResponseManager
import groovy.json.JsonSlurper

RequestObject request = WSResponseManager.getInstance().getCurrentRequest()
ResponseObject response = WSResponseManager.getInstance().getCurrentResponse()

responseString= response.toString()

JsonSlurper slurper = new JsonSlurper()
Map m = slurper.parseText(response.getResponseBodyContent())

def wearCoefficientOverTunnelmeter= m.wearCoefficientOverTunnelmeter
 countWearCoef = 0
for (def p: wearCoefficientOverTunnelmeter) {
	if(wearCoefficientOverTunnelmeter.track_name =='34' ) {
	countWearCoef= countWearCoef +1
}
}
println (countWearCoef)

```

Could you please advise a solution?

Thank you in advance for your help!

---

<div class="post-metadata">

**Author:** ![yakovlieva.olena](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/yakovlieva.olena/32/20464_2.png) [@yakovlieva.olena](https://forum.katalon.com/u/yakovlieva.olena)\
**Post date:** [December 18, 2023, 4:29pm UTC](https://forum.katalon.com/t/json-parsing-cannot-cast-object-with-class-java-lang-integer-to-class-java-util-map/111015/6 "2023-12-18T16:29:01Z")

</div>

something is wrong with a loop. I need some time to understand.

---

<div class="post-metadata">

**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\
**Post date:** [December 18, 2023, 10:32pm UTC](https://forum.katalon.com/t/json-parsing-cannot-cast-object-with-class-java-lang-integer-to-class-java-util-map/111015/7 "2023-12-18T22:32:34Z")

</div>

> [@yakovlieva.olena](#):
>
> Verification status is incomplete

What do you mean by saying “incomplete”?

In the screenshot I found the output from your code:  
`1229`

It looks just fine. That’s all your script does. It has no “verification” code at all.

So what is “incomplete”? I have no idea.

---

<div class="post-metadata">

**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\
**Post date:** [December 18, 2023, 10:37pm UTC](https://forum.katalon.com/t/json-parsing-cannot-cast-object-with-class-java-lang-integer-to-class-java-util-map/111015/8 "2023-12-18T22:37:32Z")

</div>

The screenshot shows this:

 ![Screenshot 2023-12-19 at 07.35.41](https://europe1.discourse-cdn.com/katalon/original/3X/3/5/35dbfe5404b3237acf4930eb05d586431821df51.png)

This looks strange. You would rather want this, don’t you?

```auto
if (wearCoefficientOverTunnelmeter.track_name == '34') {
    countWearCoef = countWearCoef + 1
}

```

---

<div class="post-metadata">

**Author:** ![yakovlieva.olena](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/yakovlieva.olena/32/20464_2.png) [@yakovlieva.olena](https://forum.katalon.com/u/yakovlieva.olena)\
**Post date:** [December 19, 2023, 1:51pm UTC](https://forum.katalon.com/t/json-parsing-cannot-cast-object-with-class-java-lang-integer-to-class-java-util-map/111015/9 "2023-12-19T13:51:56Z")

</div>

@kazurayam thank you. I’ve fixed this loop.

I’ve added an assertion, but the result of verification is still **incomplete** (lable in Verification Log)

 ![image](https://europe1.discourse-cdn.com/katalon/original/3X/d/f/df4733a2dcb62d276a8aa105243e3113a122664d.png)

No exeptions.

code that is executed:

```auto
import static org.assertj.core.api.Assertions.*

import com.kms.katalon.core.testobject.RequestObject
import com.kms.katalon.core.testobject.ResponseObject
import com.kms.katalon.core.webservice.keyword.WSBuiltInKeywords as WS
import com.kms.katalon.core.webservice.verification.WSResponseManager

import groovy.json.JsonSlurper

RequestObject request = WSResponseManager.getInstance().getCurrentRequest()
ResponseObject response = WSResponseManager.getInstance().getCurrentResponse()

JsonSlurper slurper = new JsonSlurper()
Map m = slurper.parseText(response.getResponseBodyContent())

/*
def avgByArea= m.avgByArea
def avgByArea_gauge= m.avgByArea[0]
def avgByArea_gauge_area= m.avgByArea[0].area

*/

def wearCoefficientOverTunnelmeter= m.wearCoefficientOverTunnelmeter
 countWearCoef = 0
 countWearCoefAll = 0
 
List<String> wearTypes = new ArrayList<String>()
List<Date> dateFrom = new ArrayList<Date>()
 
 println (wearCoefficientOverTunnelmeter[0].track_name)
 println(wearCoefficientOverTunnelmeter.size())
 
 for (int i = 0; i <wearCoefficientOverTunnelmeter.size(); i++) {
 
	 
		countWearCoefAll= countWearCoefAll +1
		if (wearCoefficientOverTunnelmeter[i].weartype != 'Inspection') {
		
	countWearCoef= countWearCoef +1
		
	println(i)
	//println(wearCoefficientOverTunnelmeter[i])
	println(wearCoefficientOverTunnelmeter[i].weartype)
	wearTypes.push(wearCoefficientOverTunnelmeter[i].weartype)
	dateFrom.push(wearCoefficientOverTunnelmeter[i].from)
	}
 }
 

println (countWearCoef)
println (countWearCoefAll)
println (wearTypes)
println (dateFrom)

WS.verifyResponseStatusCode(response, 200)

assertThat(response.getStatusCode()).isEqualTo(200)

```

---

<div class="post-metadata">

**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\
**Post date:** [December 19, 2023, 10:25pm UTC](https://forum.katalon.com/t/json-parsing-cannot-cast-object-with-class-java-lang-integer-to-class-java-util-map/111015/10 "2023-12-19T22:25:49Z")

</div>

> [@yakovlieva.olena](#):
>
> No exeptions.

Do you expect to see any exception here?

I don’t understand why you expect exception here.

---

<div class="post-metadata">

**Author:** ![yakovlieva.olena](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/yakovlieva.olena/32/20464_2.png) [@yakovlieva.olena](https://forum.katalon.com/u/yakovlieva.olena)\
**Post date:** [December 20, 2023, 11:16am UTC](https://forum.katalon.com/t/json-parsing-cannot-cast-object-with-class-java-lang-integer-to-class-java-util-map/111015/11 "2023-12-20T11:16:45Z")

</div>

@kazurayam  
I confused with INCOMPLETE red label on verification Log tab for this call. Other calls have PASSED green label.

 ![Monosnap Katalon Studio - 9.1.0-49044609 - Web plu](https://europe1.discourse-cdn.com/katalon/original/3X/4/b/4b7e8b83c814122b63c0e21c759bc0c0234cea0f.png)

---

<div class="post-metadata">

**Author:** ![kazurayam](https://dub1.discourse-cdn.com/katalon/user_avatar/forum.katalon.com/kazurayam/32/333_2.png) [@kazurayam](https://forum.katalon.com/u/kazurayam)\
**Post date:** [December 20, 2023, 11:33am UTC](https://forum.katalon.com/t/json-parsing-cannot-cast-object-with-class-java-lang-integer-to-class-java-util-map/111015/12 "2023-12-20T11:33:12Z")

</div>

I don’t know what “INCOMPLETE” means at all.