Add a property to disable auto-configuration of GzipFilter

Closes gh-2776

spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/GzipFilterAutoConfiguration.java

@@ -20,6 +20,7 @@ import org.eclipse.jetty.servlets.GzipFilter;
 import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
 import org.springframework.boot.autoconfigure.condition.ConditionalOnClass;
+import org.springframework.boot.autoconfigure.condition.ConditionalOnProperty;
 import org.springframework.boot.context.embedded.FilterRegistrationBean;
 import org.springframework.boot.context.properties.EnableConfigurationProperties;
 import org.springframework.context.annotation.Bean;
@@ -40,6 +41,7 @@ public class GzipFilterAutoConfiguration {
 	private GzipFilterProperties properties;
 
 	@Bean
+	@ConditionalOnProperty(prefix = "spring.http.gzip", name = "enabled", matchIfMissing = true)
 	public FilterRegistrationBean gzipFilter() {
 		FilterRegistrationBean registration = new FilterRegistrationBean(new GzipFilter());
 		registration.addUrlPatterns("/*");

spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/GzipFilterAutoConfigurationTests.java

@@ -24,6 +24,7 @@ import org.springframework.context.annotation.AnnotationConfigApplicationContext
 
 import static org.hamcrest.Matchers.contains;
 import static org.hamcrest.Matchers.equalTo;
+import static org.hamcrest.Matchers.is;
 import static org.junit.Assert.assertThat;
 
 /**
@@ -102,6 +103,13 @@ public class GzipFilterAutoConfigurationTests {
 				equalTo("vary-header-value"));
 	}
 
+	@Test
+	public void filterCanBeDisabled() {
+		createAndRefreshContext("spring.http.gzip.enabled:false");
+		assertThat(this.context.getBeanNamesForType(FilterRegistrationBean.class).length,
+				is(equalTo(0)));
+	}
+
 	private void createAndRefreshContext(String... pairs) {
 		this.context = new AnnotationConfigApplicationContext();
 		EnvironmentTestUtils.addEnvironment(this.context, pairs);

spring-boot-docs/src/main/asciidoc/appendix-application-properties.adoc

@@ -115,15 +115,16 @@ content into your application; rather pick only the properties that you need.
 
 	# HTTP response compression ({sc-spring-boot-autoconfigure}/web/GzipFilterProperties.{sc-ext}[GzipFilterProperties])
 	spring.http.gzip.bufferSize= # size of the output buffer in bytes
-	spring.http.gzip.minGzipSize= # minimum content length required for compression to occur
 	spring.http.gzip.deflateCompressionLevel= # the level used for deflate compression (0-9)
 	spring.http.gzip.deflateNoWrap= # noWrap setting for deflate compression (true or false)
-	spring.http.gzip.methods= # comma-separated list of HTTP methods for which compression is enabled
-	spring.http.gzip.mimeTypes= # comma-separated list of MIME types which should be compressed
+	spring.http.gzip.enabled=true # enable gzip filter support
 	spring.http.gzip.excludedAgents= # comma-separated list of user agents to exclude from compression
 	spring.http.gzip.excludedAgentPatterns= # comma-separated list of regular expression patterns to control user agents excluded from compression
 	spring.http.gzip.excludedPaths= # comma-separated list of paths to exclude from compression
 	spring.http.gzip.excludedPathPatterns= # comma-separated list of regular expression patterns to control the paths that are excluded from compression
+	spring.http.gzip.methods= # comma-separated list of HTTP methods for which compression is enabled
+	spring.http.gzip.mimeTypes= # comma-separated list of MIME types which should be compressed
+	spring.http.gzip.minGzipSize= # minimum content length required for compression to occur
 	spring.http.gzip.vary= # Vary header to be sent on responses that may be compressed
 
 	# JACKSON ({sc-spring-boot-autoconfigure}/jackson/JacksonProperties.{sc-ext}[JacksonProperties])