Deprecate exceptionIfInvalid

This commit deprecates the `exceptionIfInvalid` feature as we have now a
way to select the `@ConfigurationProperties` object to validate (i.e. add
`@Validated` on them).

Closes gh-8027

spring-boot/src/main/java/org/springframework/boot/bind/PropertiesConfigurationFactory.java

@@ -186,7 +186,10 @@ public class PropertiesConfigurationFactory<T>
 	 * Set a flag to indicate that an exception should be raised if a Validator is
 	 * available and validation fails.
 	 * @param exceptionIfInvalid the flag to set
+	 * @deprecated as of 1.5, do not specify a {@link Validator} if validation should not
+	 * occur
 	 */
+	@Deprecated
 	public void setExceptionIfInvalid(boolean exceptionIfInvalid) {
 		this.exceptionIfInvalid = exceptionIfInvalid;
 	}

spring-boot/src/main/java/org/springframework/boot/context/properties/ConfigurationProperties.java

@@ -86,7 +86,10 @@ public @interface ConfigurationProperties {
 	 * it is set to false, validation errors will be swallowed. They will be logged, but
 	 * not propagated to the caller.
 	 * @return the flag value (default true)
+	 * @deprecated as of 1.5 since validation only kicks in when {@code @Validated} is
+	 * present
 	 */
+	@Deprecated
 	boolean exceptionIfInvalid() default true;
 
 }

spring-boot/src/main/java/org/springframework/boot/context/properties/ConfigurationPropertiesBindingPostProcessor.java

@@ -304,6 +304,7 @@ public class ConfigurationPropertiesBindingPostProcessor implements BeanPostProc
 		return bean;
 	}
 
+	@SuppressWarnings("deprecation")
 	private void postProcessBeforeInitialization(Object bean, String beanName,
 			ConfigurationProperties annotation) {
 		Object target = bean;

spring-boot/src/test/java/org/springframework/boot/bind/PropertiesConfigurationFactoryTests.java

 /*
- * Copyright 2012-2016 the original author or authors.
+ * Copyright 2012-2017 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -84,6 +84,7 @@ public class PropertiesConfigurationFactoryTests {
 	}
 
 	@Test
+	@Deprecated
 	public void testValidationErrorCanBeSuppressed() throws Exception {
 		this.validator = new SpringValidatorAdapter(
 				Validation.buildDefaultValidatorFactory().getValidator());

spring-boot/src/test/java/org/springframework/boot/context/properties/EnableConfigurationPropertiesTests.java

@@ -185,6 +185,7 @@ public class EnableConfigurationPropertiesTests {
 	}
 
 	@Test
+	@Deprecated
 	public void testNoExceptionOnValidation() {
 		this.context.register(NoExceptionIfInvalidTestConfiguration.class);
 		TestPropertySourceUtils.addInlinedPropertiesToEnvironment(this.context,
@@ -452,6 +453,7 @@ public class EnableConfigurationPropertiesTests {
 
 	@Configuration
 	@EnableConfigurationProperties(NoExceptionIfInvalidTestProperties.class)
+	@Deprecated
 	protected static class NoExceptionIfInvalidTestConfiguration {
 
 	}
@@ -711,6 +713,7 @@ public class EnableConfigurationPropertiesTests {
 
 	@ConfigurationProperties(exceptionIfInvalid = false)
 	@Validated
+	@Deprecated
 	protected static class NoExceptionIfInvalidTestProperties extends TestProperties {
 
 		@NotNull