Configure Jetty to compress responses to requests other than GET

Closes gh-8184

spring-boot/src/main/java/org/springframework/boot/web/embedded/jetty/JettyServletWebServerFactory.java

@@ -32,6 +32,7 @@ import javax.servlet.ServletException;
 import javax.servlet.http.HttpServletRequest;
 import javax.servlet.http.HttpServletResponse;
 
+import org.eclipse.jetty.http.HttpMethod;
 import org.eclipse.jetty.http.HttpVersion;
 import org.eclipse.jetty.http.MimeTypes;
 import org.eclipse.jetty.server.AbstractConnector;
@@ -229,6 +230,9 @@ public class JettyServletWebServerFactory extends AbstractServletWebServerFactor
 		Compression compression = getCompression();
 		handler.setMinGzipSize(compression.getMinResponseSize());
 		handler.setIncludedMimeTypes(compression.getMimeTypes());
+		for (HttpMethod httpMethod : HttpMethod.values()) {
+			handler.addIncludedMethods(httpMethod.name());
+		}
 		if (compression.getExcludedUserAgents() != null) {
 			handler.setExcludedAgentPatterns(compression.getExcludedUserAgents());
 		}
@@ -581,8 +585,8 @@ public class JettyServletWebServerFactory extends AbstractServletWebServerFactor
 	}
 
 	/**
-	 * Returns a mutable collection of Jetty {@link JettyServerCustomizer}s that will be applied
-	 * to the {@link Server} before the it is created.
+	 * Returns a mutable collection of Jetty {@link JettyServerCustomizer}s that will be
+	 * applied to the {@link Server} before the it is created.
 	 * @return the {@link JettyServerCustomizer}s
 	 */
 	public Collection<JettyServerCustomizer> getServerCustomizers() {

spring-boot/src/test/java/org/springframework/boot/web/embedded/jetty/JettyServletWebServerFactoryTests.java

@@ -16,18 +16,12 @@
 
 package org.springframework.boot.web.embedded.jetty;
 
-import java.io.IOException;
 import java.nio.charset.Charset;
 import java.util.Arrays;
 import java.util.Locale;
 import java.util.Map;
 import java.util.concurrent.TimeUnit;
 
-import javax.servlet.ServletException;
-import javax.servlet.http.HttpServlet;
-import javax.servlet.http.HttpServletRequest;
-import javax.servlet.http.HttpServletResponse;
-
 import org.apache.jasper.servlet.JspServlet;
 import org.eclipse.jetty.server.Handler;
 import org.eclipse.jetty.server.Server;
@@ -43,13 +37,10 @@ import org.eclipse.jetty.webapp.WebAppContext;
 import org.junit.Test;
 import org.mockito.InOrder;
 
-import org.springframework.boot.web.server.Compression;
 import org.springframework.boot.web.server.PortInUseException;
 import org.springframework.boot.web.server.Ssl;
-import org.springframework.boot.web.servlet.ServletRegistrationBean;
 import org.springframework.boot.web.servlet.server.AbstractServletWebServerFactory;
 import org.springframework.boot.web.servlet.server.AbstractServletWebServerFactoryTests;
-import org.springframework.http.HttpHeaders;
 
 import static org.assertj.core.api.Assertions.assertThat;
 import static org.hamcrest.CoreMatchers.isA;
@@ -296,38 +287,6 @@ public class JettyServletWebServerFactoryTests
 		factory.getWebServer().start();
 	}
 
-	@Override
-	@SuppressWarnings("serial")
-	// Workaround for Jetty issue - https://bugs.eclipse.org/bugs/show_bug.cgi?id=470646
-	protected String setUpFactoryForCompression(final int contentSize, String[] mimeTypes,
-			String[] excludedUserAgents) throws Exception {
-		char[] chars = new char[contentSize];
-		Arrays.fill(chars, 'F');
-		final String testContent = new String(chars);
-		AbstractServletWebServerFactory factory = getFactory();
-		Compression compression = new Compression();
-		compression.setEnabled(true);
-		if (mimeTypes != null) {
-			compression.setMimeTypes(mimeTypes);
-		}
-		if (excludedUserAgents != null) {
-			compression.setExcludedUserAgents(excludedUserAgents);
-		}
-		factory.setCompression(compression);
-		this.webServer = factory
-				.getWebServer(new ServletRegistrationBean<HttpServlet>(new HttpServlet() {
-					@Override
-					protected void doGet(HttpServletRequest req, HttpServletResponse resp)
-							throws ServletException, IOException {
-						resp.setContentLength(contentSize);
-						resp.setHeader(HttpHeaders.CONTENT_TYPE, "text/plain");
-						resp.getWriter().print(testContent);
-					}
-				}, "/test.txt"));
-		this.webServer.start();
-		return testContent;
-	}
-
 	@Override
 	protected JspServlet getJspServlet() throws Exception {
 		WebAppContext context = (WebAppContext) ((JettyWebServer) this.webServer)

spring-boot/src/test/java/org/springframework/boot/web/servlet/server/AbstractServletWebServerFactoryTests.java

@@ -58,7 +58,9 @@ import javax.servlet.ServletContext;
 import javax.servlet.ServletException;
 import javax.servlet.ServletRequest;
 import javax.servlet.ServletResponse;
+import javax.servlet.http.HttpServlet;
 import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
 import javax.servlet.http.HttpSession;
 
 import org.apache.http.client.HttpClient;
@@ -775,10 +777,15 @@ public abstract class AbstractServletWebServerFactoryTests {
 	}
 
 	@Test
-	public void compression() throws Exception {
+	public void compressionOfResposeToGetRequest() throws Exception {
 		assertThat(doTestCompression(10000, null, null)).isTrue();
 	}
 
+	@Test
+	public void compressionOfResposeToPostRequest() throws Exception {
+		assertThat(doTestCompression(10000, null, null, HttpMethod.POST)).isTrue();
+	}
+
 	@Test
 	public void noCompressionForSmallResponse() throws Exception {
 		assertThat(doTestCompression(100, null, null)).isFalse();
@@ -991,12 +998,18 @@ public abstract class AbstractServletWebServerFactoryTests {
 
 	private boolean doTestCompression(int contentSize, String[] mimeTypes,
 			String[] excludedUserAgents) throws Exception {
+		return doTestCompression(contentSize, mimeTypes, excludedUserAgents,
+				HttpMethod.GET);
+	}
+
+	private boolean doTestCompression(int contentSize, String[] mimeTypes,
+			String[] excludedUserAgents, HttpMethod method) throws Exception {
 		String testContent = setUpFactoryForCompression(contentSize, mimeTypes,
 				excludedUserAgents);
 		TestGzipInputStreamFactory inputStreamFactory = new TestGzipInputStreamFactory();
 		Map<String, InputStreamFactory> contentDecoderMap = Collections
 				.singletonMap("gzip", (InputStreamFactory) inputStreamFactory);
-		String response = getResponse(getLocalUrl("/test.txt"),
+		String response = getResponse(getLocalUrl("/test.txt"), method,
 				new HttpComponentsClientHttpRequestFactory(
 						HttpClientBuilder.create().setUserAgent("testUserAgent")
 								.setContentDecoderRegistry(contentDecoderMap).build()));
@@ -1004,15 +1017,12 @@ public abstract class AbstractServletWebServerFactoryTests {
 		return inputStreamFactory.wasCompressionUsed();
 	}
 
-	protected String setUpFactoryForCompression(int contentSize, String[] mimeTypes,
+	private String setUpFactoryForCompression(int contentSize, String[] mimeTypes,
 			String[] excludedUserAgents) throws Exception {
 		char[] chars = new char[contentSize];
 		Arrays.fill(chars, 'F');
 		String testContent = new String(chars);
 		AbstractServletWebServerFactory factory = getFactory();
-		FileCopyUtils.copy(testContent,
-				new FileWriter(this.temporaryFolder.newFile("test.txt")));
-		factory.setDocumentRoot(this.temporaryFolder.getRoot());
 		Compression compression = new Compression();
 		compression.setEnabled(true);
 		if (mimeTypes != null) {
@@ -1022,6 +1032,20 @@ public abstract class AbstractServletWebServerFactoryTests {
 			compression.setExcludedUserAgents(excludedUserAgents);
 		}
 		factory.setCompression(compression);
+		factory.addInitializers(
+				new ServletRegistrationBean<HttpServlet>(new HttpServlet() {
+
+					@Override
+					protected void service(HttpServletRequest req,
+							HttpServletResponse resp)
+									throws ServletException, IOException {
+						resp.setContentType("text/plain");
+						resp.setContentLength(testContent.length());
+						resp.getWriter().write(testContent);
+						resp.getWriter().flush();
+					}
+
+				}, "/test.txt"));
 		this.webServer = factory.getWebServer();
 		this.webServer.start();
 		return testContent;