Merge pull request #484 from ivanp81/master

Add JSON Schema validation

json/pom.xml

@@ -0,0 +1,25 @@
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>org.baeldung</groupId>
+    <artifactId>json</artifactId>
+    <version>0.0.1-SNAPSHOT</version>
+
+    <dependencies>
+
+        <dependency>
+            <groupId>org.everit.json</groupId>
+            <artifactId>org.everit.json.schema</artifactId>
+            <version>1.3.0</version>
+        </dependency>
+
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.12</version>
+            <scope>test</scope>
+        </dependency>
+
+    </dependencies>
+
+</project>

json/src/test/java/org/baeldung/json/schema/JSONSchemaTest.java

@@ -0,0 +1,31 @@
+package org.baeldung.json.schema;
+
+import org.everit.json.schema.Schema;
+import org.everit.json.schema.loader.SchemaLoader;
+
+import org.json.JSONObject;
+import org.json.JSONTokener;
+import org.junit.Test;
+
+public class JSONSchemaTest {
+
+    @Test
+    public void givenInvalidInput_whenValidating_thenInvalid() {
+
+        JSONObject jsonSchema = new JSONObject(new JSONTokener(JSONSchemaTest.class.getResourceAsStream("/schema.json")));
+        JSONObject jsonSubject = new JSONObject(new JSONTokener(JSONSchemaTest.class.getResourceAsStream("/product_invalid.json")));
+
+        Schema schema = SchemaLoader.load(jsonSchema);
+        schema.validate(jsonSubject);
+    }
+
+    @Test
+    public void givenValidInput_whenValidating_thenValid() {
+
+        JSONObject jsonSchema = new JSONObject(new JSONTokener(JSONSchemaTest.class.getResourceAsStream("/schema.json")));
+        JSONObject jsonSubject = new JSONObject(new JSONTokener(JSONSchemaTest.class.getResourceAsStream("/product_valid.json")));
+
+        Schema schema = SchemaLoader.load(jsonSchema);
+        schema.validate(jsonSubject);
+    }
+}

json/src/test/resources/product_invalid.json

@@ -0,0 +1,5 @@
+{
+    "id": 1,
+    "name": "Lampshade",
+    "price": 0
+}

json/src/test/resources/product_valid.json

@@ -0,0 +1,5 @@
+{
+    "id": 1,
+    "name": "Lampshade",
+    "price": 10
+}

json/src/test/resources/schema.json

@@ -0,0 +1,22 @@
+{
+    "$schema": "http://json-schema.org/draft-04/schema#",
+    "title": "Product",
+    "description": "A product from the catalog",
+    "type": "object",
+    "properties": {
+        "id": {
+            "description": "The unique identifier for a product",
+            "type": "integer"
+        },
+        "name": {
+            "description": "Name of the product",
+            "type": "string"
+        },
+        "price": {
+            "type": "number",
+            "minimum": 0,
+            "exclusiveMinimum": true
+        }
+    },
+    "required": ["id", "name", "price"]
+}