Upgrade Spring to Spring Boot 2.1.2 and Java 11 (#4365)

frameworks/Java/spring/README.md

@@ -32,8 +32,8 @@ Tomcat use a fixed thread pool that can grow up to 200 threads.
 
 ## Versions
 
-* [Java OpenJDK 10](http://openjdk.java.net/)
-* [Spring boot 2.0.3](https://spring.io/projects/spring-boot)
+* [Java OpenJDK 11](http://openjdk.java.net/)
+* [Spring boot 2.1.2](https://spring.io/projects/spring-boot)
 
 ## Test URLs
 

frameworks/Java/spring/pom.xml

@@ -13,12 +13,12 @@
   <parent>
     <groupId>org.springframework.boot</groupId>
     <artifactId>spring-boot-starter-parent</artifactId>
-    <version>2.0.4.RELEASE</version>
+    <version>2.1.2.RELEASE</version>
   </parent>
 
   <properties>
-    <maven.compiler.source>10</maven.compiler.source>
-    <maven.compiler.target>10</maven.compiler.target>
+    <maven.compiler.source>11</maven.compiler.source>
+    <maven.compiler.target>11</maven.compiler.target>
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
     <postgresql.version>42.2.5</postgresql.version>
   </properties>

frameworks/Java/spring/spring.dockerfile

@@ -1,10 +1,10 @@
-FROM maven:3.5.3-jdk-10-slim as maven
+FROM maven:3.6.0-jdk-11-slim as maven
 WORKDIR /spring
 COPY src src
 COPY pom.xml pom.xml
 RUN mvn package -q
 
-FROM openjdk:10-jre-slim
+FROM openjdk:11-jre-slim
 WORKDIR /spring
 COPY --from=maven /spring/target/hello-spring-1.0-SNAPSHOT.jar app.jar
 CMD ["java", "-server", "-XX:+UseNUMA", "-XX:+UseParallelGC", "-jar", "app.jar"]