Return actual status code not 200 to machine client

Machine clients are much more fussy than browsers and we
should take care to preserve the HTTP status for them.

Fixes gh-596

spring-boot-actuator/src/main/java/org/springframework/boot/actuate/web/BasicErrorController.java

@@ -30,6 +30,7 @@ import org.apache.commons.logging.LogFactory;
 import org.springframework.beans.factory.annotation.Value;
 import org.springframework.boot.context.embedded.AbstractEmbeddedServletContainerFactory;
 import org.springframework.http.HttpStatus;
+import org.springframework.http.ResponseEntity;
 import org.springframework.stereotype.Controller;
 import org.springframework.web.bind.annotation.RequestMapping;
 import org.springframework.web.bind.annotation.ResponseBody;
@@ -63,17 +64,26 @@ public class BasicErrorController implements ErrorController {
 
 	@RequestMapping(value = "${error.path:/error}", produces = "text/html")
 	public ModelAndView errorHtml(HttpServletRequest request) {
-		Map<String, Object> map = error(request);
+		Map<String, Object> map = extract(new ServletRequestAttributes(request), false,
+				false);
 		return new ModelAndView(ERROR_KEY, map);
 	}
 
 	@RequestMapping(value = "${error.path:/error}")
 	@ResponseBody
-	public Map<String, Object> error(HttpServletRequest request) {
+	public ResponseEntity<Map<String, Object>> error(HttpServletRequest request) {
 		ServletRequestAttributes attributes = new ServletRequestAttributes(request);
 		String trace = request.getParameter("trace");
-		return extract(attributes, trace != null && !"false".equals(trace.toLowerCase()),
-				true);
+		Map<String, Object> extracted = extract(attributes,
+				trace != null && !"false".equals(trace.toLowerCase()), true);
+		HttpStatus statusCode;
+		try {
+			statusCode = HttpStatus.valueOf((Integer) extracted.get("status"));
+		}
+		catch (Exception e) {
+			statusCode = HttpStatus.INTERNAL_SERVER_ERROR;
+		}
+		return new ResponseEntity<Map<String, Object>>(extracted, statusCode);
 	}
 
 	@Override

spring-boot-actuator/src/test/java/org/springframework/boot/actuate/web/BasicErrorControllerIntegrationTests.java

@@ -69,7 +69,7 @@ public class BasicErrorControllerIntegrationTests {
 	@Test
 	public void testErrorForMachineClient() throws Exception {
 		MvcResult response = this.mockMvc.perform(get("/error"))
-				.andExpect(status().isOk()).andReturn();
+				.andExpect(status().is5xxServerError()).andReturn();
 		String content = response.getResponse().getContentAsString();
 		assertTrue("Wrong content: " + content, content.contains("999"));
 	}

spring-boot-samples/spring-boot-sample-actuator/src/test/java/sample/actuator/EndpointsPropertiesSampleActuatorApplicationTests.java

@@ -50,7 +50,7 @@ public class EndpointsPropertiesSampleActuatorApplicationTests {
 		@SuppressWarnings("rawtypes")
 		ResponseEntity<Map> entity = RestTemplates.get("user", "password").getForEntity(
 				"http://localhost:8080/oops", Map.class);
-		assertEquals(HttpStatus.OK, entity.getStatusCode());
+		assertEquals(HttpStatus.INTERNAL_SERVER_ERROR, entity.getStatusCode());
 		@SuppressWarnings("unchecked")
 		Map<String, Object> body = entity.getBody();
 		assertEquals("None", body.get("error"));

spring-boot-samples/spring-boot-sample-actuator/src/test/java/sample/actuator/SampleActuatorApplicationTests.java

@@ -158,7 +158,7 @@ public class SampleActuatorApplicationTests {
 		@SuppressWarnings("rawtypes")
 		ResponseEntity<Map> entity = RestTemplates.get().getForEntity(
 				"http://localhost:8080/error", Map.class);
-		assertEquals(HttpStatus.OK, entity.getStatusCode());
+		assertEquals(HttpStatus.INTERNAL_SERVER_ERROR, entity.getStatusCode());
 		@SuppressWarnings("unchecked")
 		Map<String, Object> body = entity.getBody();
 		assertEquals("None", body.get("error"));