Revert "Add handleFailure property to FrameworkServlet"

This reverts commit 29ce6685ca.

spring-webmvc/src/main/java/org/springframework/web/servlet/FrameworkServlet.java

@@ -209,9 +209,6 @@ public abstract class FrameworkServlet extends HttpServletBean implements Applic
 	/** Should we dispatch an HTTP TRACE request to {@link #doService}?. */
 	private boolean dispatchTraceRequest = false;
 
-	/** Should we set the status to 500 for unhandled failures? */
-	private boolean shouldHandleFailure = false;
-
 	/** WebApplicationContext for this servlet. */
 	@Nullable
 	private WebApplicationContext webApplicationContext;
@@ -475,17 +472,6 @@ public abstract class FrameworkServlet extends HttpServletBean implements Applic
 		this.dispatchTraceRequest = dispatchTraceRequest;
 	}
 
-	/**
-	 * Whether to handle failures wth {@code response.sendError(500)} as opposed
-	 * to letting them propagate to the container which may log a stacktrace
-	 * even if an error dispatch (e.g. Spring Boot app) handles the exception.
-	 * @param shouldHandleFailure whether to handle failures or propagate
-	 * @since 5.1
-	 */
-	public void setShouldHandleFailure(boolean shouldHandleFailure) {
-		this.shouldHandleFailure = shouldHandleFailure;
-	}
-
 	/**
 	 * Whether to log request params at DEBUG level, and headers at TRACE level.
 	 * Both may contain sensitive information.
@@ -1012,16 +998,12 @@ public abstract class FrameworkServlet extends HttpServletBean implements Applic
 			doService(request, response);
 		}
 		catch (ServletException | IOException ex) {
-			if (!handleFailure(request, response, ex)) {
-				failureCause = ex;
-				throw ex;
-			}
+			failureCause = ex;
+			throw ex;
 		}
 		catch (Throwable ex) {
-			if (!handleFailure(request, response, ex)) {
-				failureCause = ex;
-				throw new NestedServletException("Request processing failed", ex);
-			}
+			failureCause = ex;
+			throw new NestedServletException("Request processing failed", ex);
 		}
 
 		finally {
@@ -1087,24 +1069,6 @@ public abstract class FrameworkServlet extends HttpServletBean implements Applic
 		RequestContextHolder.setRequestAttributes(previousAttributes, this.threadContextInheritable);
 	}
 
-	private boolean handleFailure(HttpServletRequest request, HttpServletResponse response, Throwable ex) {
-		if (this.shouldHandleFailure) {
-			try {
-				response.sendError(500);
-			}
-			catch (IOException ex2) {
-				if (logger.isDebugEnabled()) {
-					logger.debug("Handling of failure failed: " + ex2);
-				}
-				return false;
-			}
-			request.setAttribute(WebUtils.ERROR_STATUS_CODE_ATTRIBUTE, 500);
-			WebUtils.exposeErrorRequestAttributes(request, ex, getServletName());
-			return true;
-		}
-		return false;
-	}
-
 	private void logResult(HttpServletRequest request, HttpServletResponse response,
 			@Nullable Throwable failureCause, WebAsyncManager asyncManager) {
 

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/AbstractMessageConverterMethodProcessor.java

@@ -281,7 +281,8 @@ public abstract class AbstractMessageConverterMethodProcessor extends AbstractMe
 							inputMessage, outputMessage);
 					if (body != null) {
 						if (logger.isDebugEnabled()) {
-							logger.debug("Writing [" + formatValue(body) + "]");
+							Object formatted = (body instanceof CharSequence ? "\"" + body + "\"" : body);
+							logger.debug("Writing [" + formatted + "]");
 						}
 						addContentDispositionHeader(inputMessage, outputMessage);
 						if (genericConverter != null) {
@@ -398,10 +399,6 @@ public abstract class AbstractMessageConverterMethodProcessor extends AbstractMe
 		return (MediaType.SPECIFICITY_COMPARATOR.compare(acceptType, produceTypeToUse) <= 0 ? acceptType : produceTypeToUse);
 	}
 
-	static String formatValue(Object body) {
-		return (body instanceof CharSequence ? "\"" + body + "\"" : body.toString());
-	}
-
 	/**
 	 * Check if the path has a file extension and whether the extension is
 	 * either {@link #WHITELISTED_EXTENSIONS whitelisted} or explicitly

spring-webmvc/src/main/java/org/springframework/web/servlet/mvc/method/annotation/RequestMappingHandlerAdapter.java

@@ -885,8 +885,8 @@ public class RequestMappingHandlerAdapter extends AbstractHandlerMethodAdapter
 				mavContainer = (ModelAndViewContainer) asyncManager.getConcurrentResultContext()[0];
 				asyncManager.clearConcurrentResult();
 				if (logger.isDebugEnabled()) {
-					String formatted = AbstractMessageConverterMethodProcessor.formatValue(result);
-					logger.debug("Resume with async result [" + formatted + "]");
+					logger.debug("Resume with async result [" +
+							(result instanceof CharSequence ? "\"" + result + "\"" :  result) + "]");
 				}
 				invocableMethod = invocableMethod.wrapConcurrentResult(result);
 			}

spring-webmvc/src/test/java/org/springframework/web/servlet/DispatcherServletTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2018 the original author or authors.
+ * Copyright 2002-2017 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.
@@ -614,32 +614,6 @@ public class DispatcherServletTests {
 		assertTrue(!ex.toString().contains("bar"));
 	}
 
-	@Test // SPR-17100
-	public void shouldHandleFailure() throws ServletException, IOException {
-
-		IllegalStateException ex = new IllegalStateException("dummy");
-		@SuppressWarnings("serial")
-		FrameworkServlet servlet = new FrameworkServlet() {
-			@Override
-			protected void doService(HttpServletRequest request, HttpServletResponse response) {
-				throw ex;
-			}
-		};
-		servlet.setShouldHandleFailure(true);
-
-		MockHttpServletRequest request = new MockHttpServletRequest(getServletContext(), "GET", "/error");
-		MockHttpServletResponse response = new MockHttpServletResponse();
-
-		servlet.service(request, response);
-
-		assertEquals(500, response.getStatus());
-		assertEquals(500, request.getAttribute(WebUtils.ERROR_STATUS_CODE_ATTRIBUTE));
-		assertEquals(ex.getClass(), request.getAttribute(WebUtils.ERROR_EXCEPTION_TYPE_ATTRIBUTE));
-		assertEquals(ex.getMessage(), request.getAttribute(WebUtils.ERROR_MESSAGE_ATTRIBUTE));
-		assertEquals(ex, request.getAttribute(WebUtils.ERROR_EXCEPTION_ATTRIBUTE));
-		assertEquals(request.getRequestURI(), request.getAttribute(WebUtils.ERROR_REQUEST_URI_ATTRIBUTE));
-	}
-
 	@Test
 	public void cleanupAfterIncludeWithRemove() throws ServletException, IOException {
 		MockHttpServletRequest request = new MockHttpServletRequest(getServletContext(), "GET", "/main.do");