问题
For example :
Json A =>
{
"customer": {
"age": 29,
"fullName": "Emily Jenkins",
"year":1988,
"address":{
"lineOne":"lineOne",
"lineTwo":"lineTwo"
}
},
"handset":{
"phone":"0123456789",
"colour":"black"
}
}
Json B =>
{
"customer": {
"fullName": "Sammy J",
"age": 31,
"year":1985,
"address":{
"lineTwo":"lineTwo",
"lineOne":"lineOne"
}
},
"handset":{
"colour":"red",
"phone":"0123456788"
}
}
I want compare these two json and it should return true as keys are matching and both json structure is same. So is there a clean way of doing it?
I know using Gson lib I can compare two JsonElement but that would match values as well which I don't want to keep as constraint for my use-case.
JsonParser parser = new JsonParser();
JsonElement p1 = parser.parse(JsonA);
JsonElement p2 = parser.parse(JsonB);
System.out.printf(p1.equals(p2) ? "Equal" : "Not Equal"); //it returns true if values are same.
回答1:
This is indeed a case for JSON Schema validation, refer Core and Validation.
There are a few JSON schema validators available, for the below examples, I am using enter link description here . The library binaries are available in Maven, it can also be downloaded (along with all dependency and javadoc) from here . Other validators are also available from here.
It would perhaps be of help to go through this guide.
The schema for the example is as below (SampleJsonSchema.json):
{
"$schema":"http://json-schema.org/draft-07/schema#",
"id":"http://test.org/sampleJsonSchema1",
"title":"SampleJSONSchema",
"description":"This is the description",
"type":"object",
"properties":{
"customer":{
"type":"object",
"properties":{
"fullname":{"type":"string"},
"age":{"type":"integer"},
"year":{"type":"integer"},
"address":{
"type":"object",
"properties":{
"lineOne":{"type":"string"},
"lineTwo":{"type":"string"}
},
"required":["lineOne", "lineTwo"],
"maxProperties":2
}
},
"required":["fullname","age","year","address"],
"maxProperties":4
},
"handset":{
"type":"object",
"properties":{
"phone":{"type":"string"},
"colour":{"type":"string"}
},
"required":["phone","colour"],
"maxProperties":2
}
}
}
The data used is as below (SampleJsonData.json:
{
"customer": {
"fullname": "Emily Jenkins",
"age": 29,
"year":1988,
"address":{
"lineOne":"lineOne",
"lineTwo":"lineTwo"
}
},
"handset":{
"phone":"0123456789",
"colour":"black"
}
}
The validation routine is as below:
package org.test;
import java.io.File;
import com.fasterxml.jackson.databind.JsonNode;
import com.fasterxml.jackson.databind.ObjectMapper;
import com.github.fge.jsonschema.core.report.ProcessingReport;
import com.github.fge.jsonschema.main.JsonSchema;
import com.github.fge.jsonschema.main.JsonSchemaFactory;
public class JsonValidation {
public static void main(String[] args) throws Exception{
String jsonSchemaPath="F:\\workspaces\\utilities\\TestJava\\jsonSchema\\SampleJsonSchema.json";
String jsonDataPath="F:\\workspaces\\utilities\\TestJava\\jsonSchema\\SampleJsonData.json";
ObjectMapper mapper=new ObjectMapper();
JsonNode schemaNode=mapper.readValue(new File(jsonSchemaPath), JsonNode.class);
JsonNode dataNode=mapper.readValue(new File(jsonDataPath), JsonNode.class);
JsonSchema jsonSchema=JsonSchemaFactory.byDefault().getJsonSchema(schemaNode);
ProcessingReport validationReport=jsonSchema.validate(dataNode);
System.out.println(validationReport.toString());
}//main closing
}//class closing
A number of tests can be run by changing the schema and the data to observe different results.
来源：https://stackoverflow.com/questions/64736965/compare-two-json-which-has-same-nested-structure-and-same-keys-but-values-can-be