Exclude Micrometer/Observation auto-configs to prevent startup crash in TLS tests (#3123)

Signed-off-by: keyu lu <minizhiren@outlook.com>

Author: minizhiren

spring-cloud-config-client-tls-tests/src/test/java/org/springframework/cloud/config/client/tls/AppRunner.java

@@ -48,6 +48,21 @@ public void start() {
 			SpringApplicationBuilder builder = new SpringApplicationBuilder(appClass);
 			builder.properties("spring.jmx.enabled=false");
 			builder.properties(String.format("server.port=%d", availabeTcpPort()));
+
+			// Disable Micrometer/Observation auto-configurations that cause startup
+			// failures
+			// in test environment (ArrayIndexOutOfBoundsException from
+			// SimpleMeterRegistry).
+			// This prevents repeated application restarts and avoids transient port
+			// binding errors.
+			// These metrics-related components are not needed for TLS client/server
+			// tests.
+			builder.properties("spring.autoconfigure.exclude="
+					+ "org.springframework.boot.micrometer.metrics.autoconfigure.MetricsAutoConfiguration,"
+					+ "org.springframework.boot.micrometer.metrics.autoconfigure.export.simple.SimpleMetricsExportAutoConfiguration,"
+					+ "org.springframework.boot.micrometer.observation.autoconfigure.ObservationAutoConfiguration,"
+					+ "org.springframework.boot.webmvc.autoconfigure.WebMvcObservationAutoConfiguration");
+
 			builder.properties(props());
 
 			app = builder.build().run();