Throw an exception on invalid syntax in SPRING_APPLICATION_JSON

Closes gh-14251

spring-boot-project/spring-boot/src/main/java/org/springframework/boot/env/SpringApplicationJsonEnvironmentPostProcessor.java

@@ -50,6 +50,7 @@ import org.springframework.web.context.support.StandardServletEnvironment;
  * @author Dave Syer
  * @author Phillip Webb
  * @author Madhura Bhave
+ * @author Artsiom Yudovin
  * @since 1.3.0
  */
 public class SpringApplicationJsonEnvironmentPostProcessor
@@ -97,17 +98,11 @@ public class SpringApplicationJsonEnvironmentPostProcessor
 
 	private void processJson(ConfigurableEnvironment environment,
 			JsonPropertyValue propertyValue) {
-		try {
-			JsonParser parser = JsonParserFactory.getJsonParser();
-			Map<String, Object> map = parser.parseMap(propertyValue.getJson());
-			if (!map.isEmpty()) {
-				addJsonPropertySource(environment,
-						new JsonPropertySource(propertyValue, flatten(map)));
-			}
-		}
-		catch (Exception ex) {
-			logger.warn("Cannot parse JSON for spring.application.json: "
-					+ propertyValue.getJson(), ex);
+		JsonParser parser = JsonParserFactory.getJsonParser();
+		Map<String, Object> map = parser.parseMap(propertyValue.getJson());
+		if (!map.isEmpty()) {
+			addJsonPropertySource(environment,
+					new JsonPropertySource(propertyValue, flatten(map)));
 		}
 	}
 

spring-boot-project/spring-boot/src/test/java/org/springframework/boot/env/SpringApplicationJsonEnvironmentPostProcessorTests.java

@@ -16,8 +16,11 @@
 
 package org.springframework.boot.env;
 
+import org.junit.Rule;
 import org.junit.Test;
+import org.junit.rules.ExpectedException;
 
+import org.springframework.boot.json.JsonParseException;
 import org.springframework.boot.origin.PropertySourceOrigin;
 import org.springframework.core.env.ConfigurableEnvironment;
 import org.springframework.core.env.PropertySource;
@@ -32,15 +35,21 @@ import static org.assertj.core.api.Assertions.assertThat;
  * @author Dave Syer
  * @author Madhura Bhave
  * @author Phillip Webb
+ * @author Artsiom Yudovin
  */
 public class SpringApplicationJsonEnvironmentPostProcessorTests {
 
+	@Rule
+	public ExpectedException expected = ExpectedException.none();
+
 	private SpringApplicationJsonEnvironmentPostProcessor processor = new SpringApplicationJsonEnvironmentPostProcessor();
 
 	private ConfigurableEnvironment environment = new StandardEnvironment();
 
 	@Test
 	public void error() {
+		this.expected.expect(JsonParseException.class);
+		this.expected.expectMessage("Cannot parse JSON");
 		assertThat(this.environment.resolvePlaceholders("${foo:}")).isEmpty();
 		TestPropertySourceUtils.addInlinedPropertiesToEnvironment(this.environment,
 				"spring.application.json=foo:bar");