Merge pull request #413 from lor6/scopes-examples

scopes examples

spring-all/src/main/java/org/baeldung/scopes/HelloMessageGenerator.java

@@ -0,0 +1,15 @@
+package org.baeldung.scopes;
+
+public class HelloMessageGenerator {
+
+	private String message;
+
+	public String getMessage() {
+		return message;
+	}
+
+	public void setMessage(final String message) {
+		this.message = message;
+	}
+
+}

spring-all/src/main/java/org/baeldung/scopes/Person.java

@@ -0,0 +1,27 @@
+package org.baeldung.scopes;
+
+public class Person {
+	private String name;
+	private int age;
+
+	public Person() {
+	}
+
+	public Person(final String name, final int age) {
+		this.name = name;
+	}
+
+	public String getName() {
+		return name;
+	}
+
+	public void setName(final String name) {
+		this.name = name;
+	}
+
+	@Override
+	public String toString() {
+		return "Person [name=" + name + "]";
+	}
+
+}

spring-all/src/main/java/org/baeldung/scopes/ScopesController.java

@@ -0,0 +1,31 @@
+package org.baeldung.scopes;
+
+import javax.annotation.Resource;
+
+import org.apache.log4j.Logger;
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.RequestMapping;
+
+@Controller
+public class ScopesController {
+	public static final Logger LOG = Logger.getLogger(ScopesController.class);
+
+	@Resource(name = "requestMessage")
+	HelloMessageGenerator requestMessage;
+
+	@Resource(name = "sessionMessage")
+	HelloMessageGenerator sessionMessage;
+
+	@RequestMapping("/scopes")
+	public String getScopes(final Model model) {
+		LOG.info("Request Message:" + requestMessage.getMessage());
+		LOG.info("Session Message" + sessionMessage.getMessage());
+		requestMessage.setMessage("Good morning!");
+		sessionMessage.setMessage("Good afternoon!");
+		model.addAttribute("requestMessage", requestMessage.getMessage());
+		model.addAttribute("sessionMessage", sessionMessage.getMessage());
+		return "scopesExample";
+	}
+
+}

spring-all/src/main/java/org/baeldung/spring/config/ScopesConfig.java

@@ -0,0 +1,57 @@
+package org.baeldung.spring.config;
+
+import org.baeldung.scopes.HelloMessageGenerator;
+import org.baeldung.scopes.Person;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.Scope;
+import org.springframework.context.annotation.ScopedProxyMode;
+import org.springframework.web.context.WebApplicationContext;
+import org.springframework.web.servlet.config.annotation.EnableWebMvc;
+import org.springframework.web.servlet.view.JstlView;
+import org.springframework.web.servlet.view.UrlBasedViewResolver;
+
+@Configuration
+@ComponentScan("org.baeldung.scopes")
+@EnableWebMvc
+public class ScopesConfig {
+	@Bean
+	public UrlBasedViewResolver setupViewResolver() {
+		final UrlBasedViewResolver resolver = new UrlBasedViewResolver();
+		resolver.setPrefix("/WEB-INF/view/");
+		resolver.setSuffix(".jsp");
+		resolver.setViewClass(JstlView.class);
+		return resolver;
+	}
+
+	@Bean
+	@Scope(value = WebApplicationContext.SCOPE_REQUEST, proxyMode = ScopedProxyMode.TARGET_CLASS)
+	public HelloMessageGenerator requestMessage() {
+		return new HelloMessageGenerator();
+	}
+
+	@Bean
+	@Scope(value = WebApplicationContext.SCOPE_SESSION, proxyMode = ScopedProxyMode.TARGET_CLASS)
+	public HelloMessageGenerator sessionMessage() {
+		return new HelloMessageGenerator();
+	}
+
+	@Bean
+	@Scope(value = WebApplicationContext.SCOPE_GLOBAL_SESSION, proxyMode = ScopedProxyMode.TARGET_CLASS)
+	public HelloMessageGenerator globalSessionMessage() {
+		return new HelloMessageGenerator();
+	}
+
+	@Bean
+	@Scope("prototype")
+	public Person personPrototype() {
+		return new Person();
+	}
+
+	@Bean
+	@Scope("singleton")
+	public Person personSingleton() {
+		return new Person();
+	}
+}