• Here is my Java Class

  I am getting below Exception, 
  My Requirement is : Read the Json entire Json file and return it, can come one please help me to figure this out
  

    package Resources;
    import java.io.FileInputStream;
    import java.io.FileReader;
    import java.io.IOException;
    import java.util.Properties;
    
    import org.json.JSONObject;
    import org.json.simple.parser.JSONParser;
    import org.json.simple.parser.ParseException;
    import org.openqa.selenium.WebDriver;
    import org.openqa.selenium.WebElement;
    import com.fasterxml.jackson.core.JsonParser;
    
    public class ObjectRepository {
            public static JSONObject readJsonFile(String fileName) throws IOException, Exception {
            fileName="C:\\Users\\AamP\\eclipse-workspace\\globalData.json";
            JSONParser myParser = new JSONParser();
            Object myObject = myParser.parse(new FileReader(fileName));
            JSONObject myJsonObject = (JSONObject) myObject;
            return myJsonObject;
    
        }
    
    }

        java.lang.ClassCastException: class org.json.simple.JSONArray cannot be cast to class org.json.JSONObject (org.json.simple.JSONArray and org.json.JSONObject are in unnamed module of loader 'app')
            at Resources.ObjectRepository.readJsonFile(ObjectRepository.java:41)
            at Resources.BaseClass.initializeDriver(BaseClass.java:57)
            at Nimbly.nimbly_ui.SampleTest.loadUrl(SampleTest.java:29)
            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)
            at java.base/java.lang.reflect.Method.invoke(Method.java:568)
            at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:133)
            at org.testng.internal.MethodInvocationHelper.invokeMethodConsideringTimeout(MethodInvocationHelper.java:62)
            at org.testng.internal.ConfigInvoker.invokeConfigurationMethod(ConfigInvoker.java:385)
            at org.testng.internal.ConfigInvoker.invokeConfigurations(ConfigInvoker.java:321)
            at org.testng.TestRunner.invokeTestConfigurations(TestRunner.java:637)
            at org.testng.TestRunner.beforeRun(TestRunner.java:627)
            at org.testng.TestRunner.run(TestRunner.java:589)
            at org.testng.SuiteRunner.runTest(SuiteRunner.java:377)
            at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:371)
            at org.testng.SuiteRunner.privateRun(SuiteRunner.java:332)
            at org.testng.SuiteRunner.run(SuiteRunner.java:276)
            at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:53)
            at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:96)
            at org.testng.TestNG.runSuitesSequentially(TestNG.java:1212)
            at org.testng.TestNG.runSuitesLocally(TestNG.java:1134)
            at org.testng.TestNG.runSuites(TestNG.java:1063)
            at org.testng.TestNG.run(TestNG.java:1031)
            at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:115)
            at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
            at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)

CodePudding user response：

Why not directly use org.json.JSONObject

JSONObject myJsonObject = new JSONObject(new FileReader(fileName));

CodePudding user response：

public static void main(String[] args) {
    try {
        FileReader fr = new FileReader("path/to/file.json");
        JSONParser parser = new JSONParser();
        JSONArray jObj = (JSONArray) parser.parse(fr);      
    } catch (IOException | ParseException e) {
        e.printStackTrace();
    }
}

Use JSONObject for JSON like

{
  "id":"101",
  "name":"Tarun"
} 

and JSONArray for array of JSON like

[
 {"id":"1","name":"ankur"},
 {"id":"2","name":"mahajan"}
]

you can wrap it in a func. and return the jObj according to your needs.

CodePudding user response：

A JSON Object looks like: {"foo": "bar", ... } while a JSON Array looks like: ["foo", "bar", ...].

If you read the documentation for org.json.simple you'll see that parse returns Object and that org.json.JSONObject is not part of that library.

If you want to use org.json.simple, then your readJsonFile method will need to return Object, unless you are certain that the JSON file contains a JSON Array, i.e. ["foo", "bar", ...], in which case you can cast to org.json.simple.JSONArray.

This will give you a ClassCastException when your JSON file contains a JSON Object instead of an array.