![]() ![]() I have faced this issue when a developer shipped the code to consume data from REST API without properly handling unknown fields. This is troublesome and can cause problems in production if you are not aware. For example, if you are consuming JSON from a REST Web Service and tomorrow they added a new field into JSON then your code will break because Jackson will throw UnrecognizedPropertyException and stop parsing JSON. your Java class doesn't have all the fields corresponding to all JSON properties. Many other topics you can navigate through the menu.One of the common problems while parsing JSON in Java using Jackson API is that it fails when your JSON contains unknown properties i.e. If you like my posts, please like, comment, share and subscribe.įind all Selenium related posts here, all API manual and automation related posts here, and find frequently asked Java Programs here. If you have any doubt, feel free to comment below. You can subscribe to my YouTube channel RetargetCommon to learn from video tutorials. You can download/clone the above sample project from here. If we do not keep the expected JSON schema JSON file in the resource section then use matchesJsonSchema() method.You can use matchesJsonSchema() method as well. If we keep the expected JSON schema JSON file in the resource section then use matchesJsonSchemaInClasspath() method.Class JsonSchemaValidator provides static overloaded methods matchesJsonSchema() and matchesJsonSchemaInClasspath() to validate JSON schema.We need to add another Java library “ json-schema-validator” in our project classpath to perform JSON schema validation.The method matchesJsonSchema() expects JSON schema as a string not a file path as String. Do not directly give file path as String. Remember that you need to pass the file path using a File object. Let’s save below JSON schema under src/test/resources folder. This JSON schema is generated for Restful Booker – Auth API. I will use the same JSON Schema shown in this post. ![]() Asserting JSON response against JSON Schema Create JSON Schema If you store JSON schema files at different locations within the project or outside the project then you can use the overloaded method matchesJsonSchema(). ![]() If you keep JSON Schema files in the resource folder of your project or src/test/resources of a maven project then you can use matchesJsonSchemaInClasspath() method directly as you just need to pass the name of the JSON schema file. Public static JsonSchemaValidator matchesJsonSchema(File file) – Creates a Hamcrest matcher that validates that a JSON document conforms to the JSON schema provided to this method. ![]() Public static JsonSchemaValidator matchesJsonSchemaInClasspath(String pathToSchemaInClasspath) – Creates a Hamcrest matcher that validates that a JSON document conforms to the JSON schema provided to this method. JsonSchemaValidator class provides multiple overloaded static methods to perform JSON schema validation. You should also add the same version of json-schema-validator as of Rest assured (4.3.1 is this case). If you are using non-maven project then you can download JAR file and add to classpath. You can also quickly find by seeing Rest Assured official logo. Make sure you look groupId as “ io.rest-assured“. Be careful when you search the above dependency in Maven central repo as there are multiple libraries with the same name. ![]()
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