How to validate JSON schema in java?

Question

I try to check user detail object with use JSON schema. But I don't know how to check JSON object in Java.

My Schema:

{
     "type" : "object",
     "properties" : {
     "first_name" : {
                     "type" : "string" , 
                     "minLength"  : 3 , 
                     "maxLength" : 255 
                  }, 
   "last_name" : {
                     "type" : "string" , 
                     "minLength"  : 3 , 
                     "maxLength" : 255 
                  },
    "age"       : { 
                     "type" : "integer" , 
                     "minimum" : 16 ,
                      "maximum" : 40
                  },
    "phone_number" : {
                        "type" : "integer",
                        "pattern" : "[6-9][0-9]{9}"
                     } ,
     "email"     : { 
                       "type" : "string",
                       "pattern" : "[a-z0-9]+"
                   } , 
     "password" : { 
                       "type" : "string" ,
                       "minLength" : 7 ,
                       "maxLength" : 255 ,
                       "pattern" : "^.{7, 255}$"
                  } , 
      "gender" : { "enum" : ["Male" , "Female"] }   
},

"required" : ["first_name","last_name" , "age"  ,"email" , "password" 
, "gender" ]
}

My Sample Input:

{
"first_name" : "Sample" ,
"last_name" : "Name" ,
"age"  : 19,
"gender" : "Male",
"phone_number"  :  9080245591,
"email" : "samplle@gmail.com",
"password" : "uni=versity"
}

Any one can say how to check this input with use JSON schema in Java.

Java doesn't have native JSON support, so you need JSON library for processing JSON. Your question is basically "What JSON library can check JSON file using JSON schema?", and that is off-topic for StackOverflow: ***Questions asking us to recommend or find a** book, tool, **software library**, tutorial or other off-site resource **are off-topic for Stack Overflow***. Do you even have a JSON Schema? — Andreas, Jan 17 '18 at 07:32
@Andreas his example gives a JSON Schema, He didn't really ask for a Library. — pdem, Jan 17 '18 at 08:47
@pdem Guess I shouldn't comment at 3 AM, when I can't even see the JSON schema right in front of me. DOH! But the question really is a request to find a library, otherwise why would both answers (incl. yours) be doing just that? — Andreas, Jan 17 '18 at 16:04
@Andreas Well, ok :). I just didn't find a minimal working example of this on stackoverflow, — pdem, Jan 18 '18 at 09:51

score 12 · Answer 1 · answered Jan 17 '18 at 08:20

12

The json-schema-validator in GitHub, Perhaps It will help you to check the json object in java.

answered Jan 17 '18 at 08:20

holten

119
5

score 11 · Accepted Answer · answered Jan 17 '18 at 08:51

You can use FasterXML jackson with the module:json-schema-validator as holten proposed.

Include it in maven: com.github.java-json-tools json-schema-validator 2.2.8

Complementary to this, to generate schema from object instead of writing it manually you can also use another module: https://github.com/FasterXML/jackson-module-jsonSchema

I may add a functional example if needed

How to validate JSON schema in java?

2 Answers2