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Fall back to all media types if encountering invalid Accept header
A warn log message is printed, and if log level is set to debug, the exception stacktrace is logged, too. Closes gh-37455
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@ -29,6 +29,7 @@ import org.springframework.context.ApplicationContext;
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import org.springframework.core.io.Resource;
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import org.springframework.core.log.LogMessage;
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import org.springframework.http.HttpHeaders;
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import org.springframework.http.InvalidMediaTypeException;
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import org.springframework.http.MediaType;
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import org.springframework.util.StringUtils;
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import org.springframework.web.servlet.handler.AbstractUrlHandlerMapping;
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@ -41,6 +42,7 @@ import org.springframework.web.servlet.mvc.ParameterizableViewController;
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*
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* @author Andy Wilkinson
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* @author Bruce Brouwer
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* @author Moritz Halbritter
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* @see WelcomePageNotAcceptableHandlerMapping
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*/
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final class WelcomePageHandlerMapping extends AbstractUrlHandlerMapping {
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@ -80,7 +82,13 @@ final class WelcomePageHandlerMapping extends AbstractUrlHandlerMapping {
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private List<MediaType> getAcceptedMediaTypes(HttpServletRequest request) {
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String acceptHeader = request.getHeader(HttpHeaders.ACCEPT);
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if (StringUtils.hasText(acceptHeader)) {
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return MediaType.parseMediaTypes(acceptHeader);
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try {
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return MediaType.parseMediaTypes(acceptHeader);
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}
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catch (InvalidMediaTypeException ex) {
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logger.warn("Received invalid Accept header. Assuming all media types are accepted",
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logger.isDebugEnabled() ? ex : null);
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}
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}
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return MEDIA_TYPES_ALL;
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}
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@ -23,6 +23,7 @@ import javax.servlet.http.HttpServletRequest;
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import javax.servlet.http.HttpServletResponse;
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import org.junit.jupiter.api.Test;
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import org.junit.jupiter.api.extension.ExtendWith;
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import org.springframework.beans.factory.ObjectProvider;
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import org.springframework.beans.factory.annotation.Value;
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@ -31,6 +32,8 @@ import org.springframework.boot.autoconfigure.context.PropertyPlaceholderAutoCon
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import org.springframework.boot.autoconfigure.template.TemplateAvailabilityProvider;
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import org.springframework.boot.autoconfigure.template.TemplateAvailabilityProviders;
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import org.springframework.boot.test.context.runner.WebApplicationContextRunner;
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import org.springframework.boot.test.system.CapturedOutput;
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import org.springframework.boot.test.system.OutputCaptureExtension;
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import org.springframework.context.ApplicationContext;
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import org.springframework.context.annotation.Bean;
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import org.springframework.context.annotation.Configuration;
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@ -54,7 +57,9 @@ import static org.springframework.test.web.servlet.result.MockMvcResultMatchers.
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* Tests for {@link WelcomePageHandlerMapping}.
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*
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* @author Andy Wilkinson
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* @author Moritz Halbritter
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*/
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@ExtendWith(OutputCaptureExtension.class)
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class WelcomePageHandlerMappingTests {
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private final WebApplicationContextRunner contextRunner = new WebApplicationContextRunner()
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@ -164,6 +169,17 @@ class WelcomePageHandlerMappingTests {
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});
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}
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@Test
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void logsInvalidAcceptHeader(CapturedOutput output) {
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this.contextRunner.withUserConfiguration(TemplateConfiguration.class).run((context) -> {
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MockMvc mockMvc = MockMvcBuilders.webAppContextSetup(context).build();
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mockMvc.perform(get("/").accept("*/*q=0.8"))
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.andExpect(status().isOk())
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.andExpect(content().string("index template"));
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});
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assertThat(output).contains("Received invalid Accept header. Assuming all media types are accepted");
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}
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@Configuration(proxyBeanMethods = false)
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static class HandlerMappingConfiguration {
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