Validate server.servlet.path does not contain '*'

Update `WebMvcProperties` to enforce that `server.servlet.path` never
contains a wildcard ['*'] character.

Closes gh-13292

spring-boot-project/spring-boot-autoconfigure/src/main/java/org/springframework/boot/autoconfigure/web/servlet/WebMvcProperties.java

@@ -242,6 +242,7 @@ public class WebMvcProperties {
 
 		public void setPath(String path) {
 			Assert.notNull(path, "Path must not be null");
+			Assert.isTrue(!path.contains("*"), "Path must not contain wildcards");
 			this.path = path;
 		}
 
@@ -257,9 +258,6 @@ public class WebMvcProperties {
 			if (this.path.equals("") || this.path.equals("/")) {
 				return "/";
 			}
-			if (this.path.contains("*")) {
-				return this.path;
-			}
 			if (this.path.endsWith("/")) {
 				return this.path + "*";
 			}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/servlet/WebMvcPropertiesTests.java

@@ -20,13 +20,16 @@ import java.util.Collections;
 import java.util.Map;
 
 import org.junit.Test;
+import org.testcontainers.shaded.com.google.common.base.Throwables;
 
+import org.springframework.boot.context.properties.bind.BindException;
 import org.springframework.boot.context.properties.bind.Bindable;
 import org.springframework.boot.context.properties.bind.Binder;
 import org.springframework.boot.context.properties.source.ConfigurationPropertySource;
 import org.springframework.boot.context.properties.source.MapConfigurationPropertySource;
 
 import static org.assertj.core.api.Assertions.assertThat;
+import static org.assertj.core.api.Assertions.assertThatExceptionOfType;
 
 /**
  * Tests for {@link WebMvcProperties}.
@@ -38,19 +41,28 @@ public class WebMvcPropertiesTests {
 	private final WebMvcProperties properties = new WebMvcProperties();
 
 	@Test
-	public void testServletPathAsMapping() {
-		bind("spring.mvc.servlet.path", "/foo/*");
+	public void servletPathWhenEndsWithSlashHasValidMappingAndPrefix() {
+		bind("spring.mvc.servlet.path", "/foo/");
 		assertThat(this.properties.getServlet().getServletMapping()).isEqualTo("/foo/*");
 		assertThat(this.properties.getServlet().getServletPrefix()).isEqualTo("/foo");
 	}
 
 	@Test
-	public void testServletPathAsPrefix() {
+	public void servletPathWhenDoesNotEndWithSlashHasValidMappingAndPrefix() {
 		bind("spring.mvc.servlet.path", "/foo");
 		assertThat(this.properties.getServlet().getServletMapping()).isEqualTo("/foo/*");
 		assertThat(this.properties.getServlet().getServletPrefix()).isEqualTo("/foo");
 	}
 
+	@Test
+	public void servletPathWhenHasWildcardThrowsException() {
+		assertThatExceptionOfType(BindException.class)
+				.isThrownBy(() -> bind("spring.mvc.servlet.path", "/*"))
+				.withRootCauseInstanceOf(IllegalArgumentException.class)
+				.satisfies((ex) -> assertThat(Throwables.getRootCause(ex))
+						.hasMessage("Path must not contain wildcards"));
+	}
+
 	private void bind(String name, String value) {
 		bind(Collections.singletonMap(name, value));
 	}

spring-boot-project/spring-boot-autoconfigure/src/test/java/org/springframework/boot/autoconfigure/web/servlet/error/RemappedErrorViewIntegrationTests.java

@@ -47,7 +47,7 @@ import static org.assertj.core.api.Assertions.assertThat;
  * @author Dave Syer
  */
 @RunWith(SpringRunner.class)
-@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT, properties = "spring.mvc.servlet.path:/spring/*")
+@SpringBootTest(webEnvironment = WebEnvironment.RANDOM_PORT, properties = "spring.mvc.servlet.path:/spring/")
 @DirtiesContext
 public class RemappedErrorViewIntegrationTests {
 

spring-boot-samples/spring-boot-sample-atmosphere/src/main/resources/application.properties

-spring.mvc.servlet.path=/home/*
+spring.mvc.servlet.path=/home/