BAEL-1273: Display RSS feed with spring mvc (AbstractRssFeedView) (#3490)

* BAEL-1216: improve tests

* BAEL-1448: Update Spring 5 articles to use the release version

* Setting up the Maven Wrapper on a maven project

* Add Maven Wrapper on spring-boot module

* simple add

* BAEL-976: Update spring version

* BAEL-1273: Display RSS feed with spring mvc (AbstractRssFeedView)

spring-boot/pom.xml

@@ -167,6 +167,12 @@
             <groupId>org.apache.activemq</groupId>
             <artifactId>artemis-server</artifactId>
         </dependency>
+
+        <dependency>
+            <groupId>com.rometools</groupId>
+            <artifactId>rome</artifactId>
+            <version>${rome.version}</version>
+        </dependency>
     </dependencies>
 
     <build>
@@ -276,6 +282,7 @@
         <tomee-servlet-api.version>8.5.11</tomee-servlet-api.version>
         <h2.version>1.4.194</h2.version>
         <togglz.version>2.4.1.Final</togglz.version>
+        <rome.version>1.9.0</rome.version>
     </properties>
 
 </project>

spring-boot/src/main/java/com/baeldung/rss/ArticleFeedView.java

@@ -0,0 +1,54 @@
+package com.baeldung.rss;
+
+import com.rometools.rome.feed.rss.Channel;
+import com.rometools.rome.feed.rss.Description;
+import com.rometools.rome.feed.rss.Item;
+import org.springframework.stereotype.Service;
+import org.springframework.web.servlet.view.feed.AbstractRssFeedView;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import java.util.ArrayList;
+import java.util.Date;
+import java.util.List;
+import java.util.Map;
+
+@Service("articleFeedView")
+public class ArticleFeedView extends AbstractRssFeedView {
+
+    protected Channel newFeed() {
+        Channel channel = new Channel("rss_2.0");
+        channel.setLink("http://localhost:8080/rss");
+        channel.setTitle("Article Feed");
+        channel.setDescription("Article Feed Description");
+        channel.setPubDate(new Date());
+        return channel;
+    }
+
+    @Override
+    protected List<Item> buildFeedItems(Map<String, Object> map, HttpServletRequest httpStRequest, HttpServletResponse httpStResponse) throws Exception {
+        List list = new ArrayList<Item>();
+
+        Item item1 = new Item();
+        item1.setLink("http://www.baeldung.com/netty-exception-handling");
+        item1.setTitle("Exceptions in Netty");
+        Description description1 = new Description();
+        description1.setValue("In this quick article, we’ll be looking at exception handling in Netty.");
+        item1.setDescription(description1);
+        item1.setPubDate(new Date());
+        item1.setAuthor("Carlos");
+
+        Item item2 = new Item();
+        item2.setLink("http://www.baeldung.com/cockroachdb-java");
+        item2.setTitle("Guide to CockroachDB in Java");
+        Description description2 = new Description();
+        description2.setValue("This tutorial is an introductory guide to using CockroachDB with Java.");
+        item2.setDescription(description2);
+        item2.setPubDate(new Date());
+        item2.setAuthor("Baeldung");
+
+        list.add(item1);
+        list.add(item2);
+        return list;
+    }
+}

spring-boot/src/main/java/com/baeldung/rss/ArticleRssController.java

@@ -0,0 +1,16 @@
+package com.baeldung.rss;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestMethod;
+
+@Controller
+@RequestMapping(value = "/rss", produces = "application/*")
+public class ArticleRssController {
+
+    @RequestMapping(method = RequestMethod.GET)
+    public String articleFeed() {
+        return "articleFeedView";
+    }
+
+}

spring-boot/src/main/java/com/baeldung/rss/CustomContainer.java

@@ -0,0 +1,16 @@
+package com.baeldung.rss;
+
+import org.springframework.boot.context.embedded.ConfigurableEmbeddedServletContainer;
+import org.springframework.boot.context.embedded.EmbeddedServletContainerCustomizer;
+import org.springframework.stereotype.Component;
+
+@Component
+public class CustomContainer implements EmbeddedServletContainerCustomizer {
+
+    @Override
+    public void customize(ConfigurableEmbeddedServletContainer container) {
+        container.setPort(8080);
+        container.setContextPath("");
+    }
+
+}

spring-boot/src/main/java/com/baeldung/rss/RssApp.java

@@ -0,0 +1,20 @@
+package com.baeldung.rss;
+
+import com.baeldung.autoconfiguration.MySQLAutoconfiguration;
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.context.annotation.ComponentScan;
+
+import javax.annotation.security.RolesAllowed;
+
+@SpringBootApplication(exclude = MySQLAutoconfiguration.class)
+@ComponentScan(basePackages = "com.baeldung.rss")
+public class RssApp {
+
+    @RolesAllowed("*")
+    public static void main(String[] args) {
+        System.setProperty("security.basic.enabled", "false");
+        SpringApplication.run(RssApp.class, args);
+    }
+
+}