Set proxy target class on caching producer factory

- Required when template accessed via web request

spring-pulsar-spring-boot-autoconfigure/build.gradle

@@ -18,6 +18,7 @@ dependencies {
 	testRuntimeOnly 'org.apache.logging.log4j:log4j-core'
 	testRuntimeOnly 'org.apache.logging.log4j:log4j-jcl'
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
+	testImplementation 'org.springframework.boot:spring-boot-starter-web'
 	testImplementation 'org.testcontainers:junit-jupiter'
 	testImplementation 'org.testcontainers:pulsar'
 }

spring-pulsar-spring-boot-autoconfigure/src/test/java/org/springframework/pulsar/autoconfigure/SpringPulsarBootAppSanityTests.java

@@ -18,6 +18,8 @@ package org.springframework.pulsar.autoconfigure;
 
 import static org.assertj.core.api.Assertions.assertThat;
 
+import org.apache.pulsar.client.api.MessageId;
+import org.apache.pulsar.client.api.PulsarClientException;
 import org.junit.jupiter.api.Test;
 
 import org.springframework.beans.factory.ObjectProvider;
@@ -25,8 +27,14 @@ import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.boot.SpringBootConfiguration;
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
 import org.springframework.boot.test.context.SpringBootTest;
+import org.springframework.boot.test.context.SpringBootTest.WebEnvironment;
+import org.springframework.boot.test.web.client.TestRestTemplate;
 import org.springframework.pulsar.autoconfigure.SpringPulsarBootAppSanityTests.SpringPulsarBootTestApp;
 import org.springframework.pulsar.core.PulsarTemplate;
+import org.springframework.test.context.DynamicPropertyRegistry;
+import org.springframework.test.context.DynamicPropertySource;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RestController;
 
 /**
  * Sanity tests to ensure that {@code Spring Pulsar} can be auto-configured into a Spring
@@ -34,19 +42,49 @@ import org.springframework.pulsar.core.PulsarTemplate;
  *
  * @author Chris Bono
  */
-@SpringBootTest(classes = SpringPulsarBootTestApp.class)
+@SpringBootTest(classes = SpringPulsarBootTestApp.class, webEnvironment = WebEnvironment.RANDOM_PORT)
 class SpringPulsarBootAppSanityTests implements PulsarTestContainerSupport {
 
+	@DynamicPropertySource
+	static void pulsarProperties(DynamicPropertyRegistry registry) {
+		registry.add("spring.pulsar.client.service-url", PulsarTestContainerSupport::getPulsarBrokerUrl);
+	}
+
 	@Test
 	void appStartsWithAutoConfiguredSpringPulsarComponents(
 			@Autowired ObjectProvider<PulsarTemplate<String>> pulsarTemplate) {
 		assertThat(pulsarTemplate.getIfAvailable()).isNotNull();
 	}
 
+	@Test
+	void templateCanBeAccessedDuringWebRequest(@Autowired TestRestTemplate restTemplate) {
+		String body = restTemplate.getForObject("/hello", String.class);
+		assertThat(body).startsWith("Hello World -> ");
+	}
+
 	@SpringBootConfiguration
 	@EnableAutoConfiguration
 	static class SpringPulsarBootTestApp {
 
+		@Autowired
+		private ObjectProvider<PulsarTemplate<String>> pulsarTemplateProvider;
+
+		@RestController
+		class TestWebController {
+
+			@GetMapping("/hello")
+			String sayHello() throws PulsarClientException {
+
+				PulsarTemplate<String> pulsarTemplate = pulsarTemplateProvider.getIfAvailable();
+				if (pulsarTemplate == null) {
+					return "NOPE! Not hello world";
+				}
+				MessageId msgId = pulsarTemplate.send("spbast-hello-topic", "hello");
+				return "Hello World -> " + msgId;
+			}
+
+		}
+
 	}
 
 }

spring-pulsar/src/main/java/org/springframework/pulsar/core/CachingPulsarProducerFactory.java

@@ -119,6 +119,7 @@ public class CachingPulsarProducerFactory<T> extends DefaultPulsarProducerFactor
 	@SuppressWarnings("unchecked")
 	private Producer<T> wrapProducerWithCloseCallback(Producer<T> producer, Consumer<Producer<T>> closeCallback) {
 		ProxyFactory factory = new ProxyFactory(producer);
+		factory.setProxyTargetClass(true);
 		factory.addAdvice(new MethodInterceptor() {
 			@Nullable
 			@Override