Add duplicate plugin. Remove class duplicates. (#1047)

pom.xml

@@ -65,6 +65,10 @@
 				<groupId>org.apache.maven.plugins</groupId>
 				<artifactId>maven-checkstyle-plugin</artifactId>
 			</plugin>
+			<plugin>
+				<groupId>org.basepom.maven</groupId>
+				<artifactId>duplicate-finder-maven-plugin</artifactId>
+			</plugin>
 		</plugins>
 	</build>
 

spring-cloud-commons/pom.xml

@@ -112,6 +112,20 @@
 			<groupId>org.springframework.security.oauth.boot</groupId>
 			<artifactId>spring-security-oauth2-autoconfigure</artifactId>
 			<optional>true</optional>
+			<exclusions>
+				<exclusion>
+					<groupId>javax.xml.bind</groupId>
+					<artifactId>jaxb-api</artifactId>
+				</exclusion>
+				<exclusion>
+					<groupId>com.sun.activation</groupId>
+					<artifactId>jakarta.activation</artifactId>
+				</exclusion>
+				<exclusion>
+					<groupId>javax.activation</groupId>
+					<artifactId>javax.activation-api</artifactId>
+				</exclusion>
+			</exclusions>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -132,6 +146,10 @@
 					<groupId>org.springframework</groupId>
 					<artifactId>spring-core</artifactId>
 				</exclusion>
+				<exclusion>
+					<groupId>javax.annotation</groupId>
+					<artifactId>javax.annotation-api</artifactId>
+				</exclusion>
 			</exclusions>
 		</dependency>
 		<dependency>

spring-cloud-context-integration-tests/pom.xml

@@ -34,6 +34,12 @@
 		<dependency>
 			<groupId>org.springframework.integration</groupId>
 			<artifactId>spring-integration-jmx</artifactId>
+			<exclusions>
+				<exclusion>
+					<groupId>javax.annotation</groupId>
+					<artifactId>javax.annotation-api</artifactId>
+				</exclusion>
+			</exclusions>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>
@@ -44,6 +50,12 @@
 			<groupId>org.springframework.boot</groupId>
 			<artifactId>spring-boot-starter-data-jpa</artifactId>
 			<scope>test</scope>
+			<exclusions>
+				<exclusion>
+					<groupId>com.sun.activation</groupId>
+					<artifactId>jakarta.activation</artifactId>
+				</exclusion>
+			</exclusions>
 		</dependency>
 		<dependency>
 			<groupId>org.hsqldb</groupId>

spring-cloud-context/pom.xml

@@ -55,6 +55,12 @@
 			<groupId>org.springframework.integration</groupId>
 			<artifactId>spring-integration-jmx</artifactId>
 			<optional>true</optional>
+			<exclusions>
+				<exclusion>
+					<groupId>javax.annotation</groupId>
+					<artifactId>javax.annotation-api</artifactId>
+				</exclusion>
+			</exclusions>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.boot</groupId>

spring-cloud-loadbalancer/pom.xml

@@ -77,11 +77,31 @@
 			<groupId>org.springframework.retry</groupId>
 			<artifactId>spring-retry</artifactId>
 			<optional>true</optional>
+			<exclusions>
+				<exclusion>
+					<groupId>javax.annotation</groupId>
+					<artifactId>javax.annotation-api</artifactId>
+				</exclusion>
+			</exclusions>
 		</dependency>
 		<dependency>
 			<groupId>org.springframework.security.oauth.boot</groupId>
 			<artifactId>spring-security-oauth2-autoconfigure</artifactId>
 			<optional>true</optional>
+			<exclusions>
+				<exclusion>
+					<groupId>javax.xml.bind</groupId>
+					<artifactId>jaxb-api</artifactId>
+				</exclusion>
+				<exclusion>
+					<groupId>com.sun.activation</groupId>
+					<artifactId>jakarta.activation</artifactId>
+				</exclusion>
+					<exclusion>
+						<groupId>javax.activation</groupId>
+						<artifactId>javax.activation-api</artifactId>
+					</exclusion>
+			</exclusions>
 		</dependency>
 		<dependency>
 			<groupId>io.micrometer</groupId>