How to find JsonParse exception in json - json

Question

I am trying to parse below json. This has to throw me the error saying incorrect json format. But the parsor parses the json only till "value:15" and is not throwing any exception. How can I achieve this?
String json = { and : [{key: domain, value: cricket}, {key : STAT_CDE,value : 15}]}, { and : [{key: domain, value: football}, {key : STAT_CDE,value : 10}]}
Sample Code I am using:
import org.codehaus.jackson.map.ObjectMapper;
ObjectMapper mapper = new ObjectMapper();
mapper.readTree(json); //this line is not throwing me any exception
Here is the code snippet:
import org.codehaus.jackson.map.ObjectMapper;
public class JsonTestParse {
public static void main(String[] args) {
String json = "{ \"and\" : [{\"key\": \"domain\", \"op\": \"=\", \"value\": \"cricket\"}, {\"key\" : \"STAT_CDE\",\"op\" : \"=\",\"value\" : \"13\"}]},"+
"{ \"and\" : [{\"key\": \"domain\", \"op\": \"=\", \"value\": \"Football\"}, {\"key\" : \"STAT_CDE\",\"op\" : \"=\",\"value\" : \"10\"}]}";
System.out.println("json: " + json);
ObjectMapper mapper = new ObjectMapper();
try {
mapper.readTree(json);
} catch (Exception e) {
System.out.println("object mapper exp");
}
System.out.println("mapper complete");
}
}
And the output:
line 1: json: { "and" : [{"key": "domain", "op": "=", "value": "cricket"}, {"key" : "STAT_CDE","op" : "=","value" : "13"}]},{ "and" : [{"key": "domain", "op": "=", "value": "Football"}, {"key" : "STAT_CDE","op" : "=","value" : "10"}]}
line 2: mapper complete

Answer 1

The issue is that there is no problem with that json format! Syntactically, you're assigning a comma-delimited list to json, which is perfectly valid code - it will set json to the first item in the list and not do anything with the rest of the values.
After your code executes, json looks like this:
String json = { and : [{key: domain, value: cricket}, {key : STAT_CDE,value : 15}]}
And this value has been ignored entirely:
{ and : [{key: domain, value: football}, {key : STAT_CDE,value : 10}]}
As you can see, json is structured perfectly well.
Also, it looks like you're expecting a String object, but you're supplying a map instead.
Try the following:
String json = "{ and : [{key: domain, value: cricket}, {key : STAT_CDE,value : 15}]}, { and : [{key: domain, value: football}, {key : STAT_CDE,value : 10}]}"
And then parse json. This will most certainly fail because the keys are not enclosed with double quotes (the " character), which is a requirement of json format.
EDIT
To keep up to date with the question:
Here is a formatted view of the json you say you're working with:
{
"and" : [
{"key": "domain", "op": "=", "value": "cricket"},
{"key" : "STAT_CDE","op" : "=","value" : "15"}
]
},
{
"and" : [
{"key": "domain", "op": "=", "value": "football"},
{"key" : "STAT_CDE","op" : "=","value" : "10"}
]
}
The issue is that this is not a json object - it is TWO SEPARATE json objects, each of which is well-formed. I am guessing that ObjectMapper parses a full json structure, and ignores any trailing data without throwing an error.
If you'd like to capture the entire structure in json you will need to enclose them together, likely using an array:
[
{
"and" : [
{"key": "domain", "op": "=", "value": "cricket"},
{"key" : "STAT_CDE","op" : "=","value" : "15"}
]
},
{
"and" : [
{"key": "domain", "op": "=", "value": "football"},
{"key" : "STAT_CDE","op" : "=","value" : "10"}
]
}
]