Add autoconfig support for Jersey (2)

Jersey 2 has some Spring support built in but it's a bit awkward to
use in a Boot app, so autoconfiguration seems appropriate. The tests
and sample show how to use it, but the short story is that any
@Component can define JAX-RS endpoints via @GET etc.

There's a sample for Jersey 1 as well (pay careful attention to
the plugin configuration if you want to build an executable jar)

Fixes gh-1651

spring-boot-samples/spring-boot-sample-jersey/src/main/java/sample/jersey/Endpoint.java

@@ -0,0 +1,41 @@
+/*
+ * Copyright 2012-2013 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.jersey;
+
+import javax.ws.rs.GET;
+import javax.ws.rs.Path;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.stereotype.Component;
+
+/**
+ * @author Dave Syer
+ *
+ */
+@Component
+@Path("/hello")
+public class Endpoint {
+
+	@Value("${message:World}")
+	private String msg;
+
+	@GET
+	public String message() {
+		return "Hello " + msg;
+	}
+
+}

spring-boot-samples/spring-boot-sample-jersey/src/main/java/sample/jersey/JerseyConfig.java

@@ -0,0 +1,29 @@
+/*
+ * Copyright 2012-2013 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.jersey;
+
+import org.glassfish.jersey.server.ResourceConfig;
+import org.springframework.stereotype.Component;
+
+@Component
+public class JerseyConfig extends ResourceConfig {
+
+	public JerseyConfig() {
+		register(Endpoint.class);
+	}
+
+}

spring-boot-samples/spring-boot-sample-jersey/src/main/java/sample/jersey/SampleJerseyApplication.java

@@ -0,0 +1,38 @@
+/*
+ * Copyright 2012-2013 the original author or authors.
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+package sample.jersey;
+
+import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
+import org.springframework.boot.builder.SpringApplicationBuilder;
+import org.springframework.boot.context.web.SpringBootServletInitializer;
+import org.springframework.context.annotation.ComponentScan;
+
+@ComponentScan
+@EnableAutoConfiguration
+public class SampleJerseyApplication extends SpringBootServletInitializer {
+
+	@Override
+	protected SpringApplicationBuilder configure(SpringApplicationBuilder application) {
+		return application.sources(SampleJerseyApplication.class);
+	}
+
+	public static void main(String[] args) {
+		new SampleJerseyApplication().configure(new SpringApplicationBuilder(SampleJerseyApplication.class)).run(
+				args);
+	}
+
+}