Solved
What is the best way to validate JSON input in AEM?
Hi
I am trying to validate JSON input in SlingHttpServletRequest in AEM, I tried to use JSON Schema and JSON Schema validator but it doesn't compile with AEM. Every time I use the JSON validator I got an error on the AEM page, all the function buttons are gone except the "Create" button.
I found that the root cause is because I used this JSON schema validator:
<dependency>
<groupId>com.github.fge</groupId>
<artifactId>json-schema-validator</artifactId>
<version>2.2.6</version>
</dependency>
It breaks the app and someone of the OSGi components fail to start. Not sure why.
Here's the code:
private String jsonSchema ="{\\\"$schema\\\":\\\"https://json-schema.org/draft/2019-09/schema\\\",\\\"$id\\\":\\\"http://example.com/example.json\\\",\\\"type\\\":\\\"object\\\",\\\"default\\\":{},\\\"title\\\":\\\"RootSchema\\\",\\\"properties\\\":{\\\"startDate\\\":{\\\"type\\\":\\\"string\\\",\\\"default\\\":\\\"\\\",\\\"title\\\":\\\"ThestartDateSchema\\\",\\\"examples\\\":[\\\"2021-01-01\\\"],\\\"format\\\":\\\"date\\\"},\\\"endDate\\\":{\\\"type\\\":\\\"string\\\",\\\"default\\\":\\\"\\\",\\\"title\\\":\\\"TheendDateSchema\\\",\\\"examples\\\":[\\\"2021-12-27\\\"],\\\"format\\\":\\\"date\\\"},\\\"governingBodyId\\\":{\\\"type\\\":\\\"string\\\",\\\"default\\\":\\\"\\\",\\\"title\\\":\\\"ThegoverningBodyIdSchema\\\",\\\"examples\\\":[\\\"a6f7A0000001B08QAE\\\"],\\\"pattern\\\":\\\"^[a-zA-Z0-9]{0,256}$\\\"},\\\"sourceId\\\":{\\\"type\\\":\\\"string\\\",\\\"default\\\":\\\"\\\",\\\"title\\\":\\\"ThesourceIdSchema\\\",\\\"examples\\\":[\\\"\\\"],\\\"pattern\\\":\\\"^[a-zA-Z0-9]{0,256}$\\\"},\\\"courseId\\\":{\\\"type\\\":\\\"string\\\",\\\"default\\\":\\\"\\\",\\\"title\\\":\\\"ThecourseIdSchema\\\",\\\"examples\\\":[\\\"\\\"],\\\"pattern\\\":\\\"^[a-zA-Z0-9]{0,256}$\\\"},\\\"useCompletionDate\\\":{\\\"type\\\":\\\"boolean\\\",\\\"default\\\":false,\\\"title\\\":\\\"TheuseCompletionDateSchema\\\",\\\"examples\\\":[true]}},\\\"examples\\\":[{\\\"startDate\\\":\\\"2021-01-01\\\",\\\"endDate\\\":\\\"2021-12-27\\\",\\\"governingBodyId\\\":\\\"a6f7A0000001B08QAE\\\",\\\"sourceId\\\":\\\"\\\",\\\"courseId\\\":\\\"\\\",\\\"useCompletionDate\\\":true}]}";
String JsonData = IOUtils.toString(request.getInputStream(),"UTF-8");
JsonNode dataNode = JsonLoader.fromString(JsonData);
JsonNode schemaNode = JsonLoader.fromString(jsonSchema);
JsonSchema schema = JsonSchemaFactory.byDefault().getJsonSchema(schemaNode);
ProcessingReport processingReport = schema.validate(dataNode);
if(!processingReport.isSuccess()){
log.error("Input JSON parameters don't match with the required pattern");
return;
}
I also tried a different JSON schema validator library but still the same error.
If AEM doesn't compile with the JSON schema validator, what methods should I use to validate the JSON input (such as format, length etc.)?
Thanks