Extracting JSON Response using Bean Shell Postprocessor

问题

I am trying to extract the value of one variable of a JSON array using Beanshell postprocessor but I am not getting any response in log

My JSON somewhat looks like:

"store":
:   [
:   :   {
:   :   :   "storeId":12345,
:   :   :   "storeName":"ABC",
:   :   :   "storeAddress":"DEFGHIJKL",
:   :   :   "storeMinOrderAmount":100,
:   :   :   "mobile":"+911234567890",
:   :   :   "mobileSecondary":null,
:   :   :   "city":"Somewhere",
:   :   :   "pincode":123456,
:   :   :   "country":"India",
:   :   :   "email":"ptrm@company.com",
:   :   :   "pickup":true,
:   :   :   "delivery":false,
:   :   :   "storeSplashPath":null,
:   :   :   "storeSplashType":null,
:   :   :   "distance":"0.10"
:   :   },

And my Beanshell Post Processor is:

import org.apache.commons.lang3.StringUtils;
import org.json.JSONArray;
import org.json.JSONObject;
import com.eclipsesource.json.*;

print("*******************");

//Get Store total count
int totalStoreNumber = StringUtils.countMatches(new String(data), "storeId");
print("Total Number of Stores are: " + totalStoreNumber);

if (totalStoreNumber > 0) {
 //Check for Fulfilment type is "Pickup"
String jsonString = prev.getResponseDataAsString();
JsonObject store = JsonObject.readFrom(jsonString);
JsonArray store = store.get("store").asArray();
String pickup = store.get(1).asObject().get("pickup").asString();
vars.put("fulfilmentType_BSH", pickup);
print("Is Pickup allowed: " + pickup);
}
else {
 print("No Stores Nearby");
}

I don't know where I am going wrong. I had read the related queries but couldn't get this right. Any Idea?

回答1:

First of all, why don't you use JSON Path PostProcessor for it? You can get absolutely the same using single simple JSON Path expression like:

$.store[0].pickup

If for any reason you still need to do it in Beanshell I have some ideas:

This is definitely the error. You cannot declare 2 variables with the same name in Beanshell script

JsonObject store = JsonObject.readFrom(jsonString);
JsonArray store = store.get("store").asArray(); 
//        ^^^^^  ka-boom!

Possible problem. IndexOutOfBoundsException if there will be only 1 store in the response. In Beanshell collections are zero-based, 1st element will have index of 0.
```
String pickup = store.get(1).asObject().get("pickup").asString();
//                        ^ ka-boom! 
```
Another possible problem could be regarding your imports, just in case
```
import org.json.JSONArray;
import org.json.JSONObject;
import com.eclipsesource.json.*;
```
Have you added the relevant jars to JMeter Classpath and have you restarted JMeter after this? Are you sure you're using methods correctly?

Here is your code re-implemented using json-smart which comes with JMeter 3.0 (you don't need any other jars)

import net.minidev.json.JSONArray;
import net.minidev.json.JSONObject;
import net.minidev.json.parser.JSONParser;
import org.apache.commons.lang.StringUtils;

//Get Store total count
int totalStoreNumber = StringUtils.countMatches(new String(data), "storeId");
log.info("Total Number of Stores are: " + totalStoreNumber);

if (totalStoreNumber > 0) {
    //Check for Fulfilment type is "Pickup"
    String jsonString = new String(data);
    JSONParser parser = new JSONParser(JSONParser.MODE_JSON_SIMPLE);
    JSONObject store = (JSONObject) parser.parse(data);
    JSONArray storeArray = (JSONArray) store.get("store");
    String pickup = ((JSONObject) storeArray.get(0)).getAsString("pickup");
    vars.put("fulfilmentType_BSH", pickup);
    log.info("Is Pickup allowed: " + pickup);
} else {
    log.info("No Stores Nearby");
}

And the evidence of its work

See How to Use BeanShell: JMeter's Favorite Built-in Component guide for more information on using Beanshell scripting in your JMeter tests

来源：https://stackoverflow.com/questions/39251042/extracting-json-response-using-bean-shell-postprocessor

标签

json

jmeter

beanshell