[ch05] FactoryBean example.

src/main/java/ch06/springbook/factorybean/Message.java

@@ -0,0 +1,18 @@
+package ch06.springbook.factorybean;
+
+public class Message {
+
+	private String text;
+
+	private Message(String text) {
+		this.text = text;
+	}
+
+	public String getText() {
+		return text;
+	}
+
+	public static Message newMessage(String text) {
+		return new Message(text);
+	}
+}

src/main/java/ch06/springbook/factorybean/MessageFactoryBean.java

@@ -0,0 +1,24 @@
+package ch06.springbook.factorybean;
+
+import org.springframework.beans.factory.FactoryBean;
+
+public class MessageFactoryBean implements FactoryBean<Message> {
+
+	private String text;
+
+	public void setText(String text) {
+		this.text = text;
+	}
+
+	public Message getObject() throws Exception {
+		return Message.newMessage(this.text);
+	}
+
+	public Class<? extends Message> getObjectType() {
+		return Message.class;
+	}
+
+	public boolean isSingleton() {
+		return false;
+	}
+}

src/main/resources/applicationContext.xml

@@ -32,4 +32,8 @@
         <property name="userService" ref="userServiceImpl" />
     </bean>
 
+    <bean id="message" class="ch06.springbook.factorybean.MessageFactoryBean">
+        <property name="text" value="Factory Bean" />
+    </bean>
+
 </beans>

src/test/java/ch06/springbook/factorybean/FactoryBeanTest.java

@@ -0,0 +1,32 @@
+package ch06.springbook.factorybean;
+
+import static org.hamcrest.core.Is.is;
+import static org.junit.Assert.assertThat;
+
+import org.junit.Test;
+import org.junit.runner.RunWith;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.context.ApplicationContext;
+import org.springframework.test.context.ContextConfiguration;
+import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;
+
+@RunWith(SpringJUnit4ClassRunner.class)
+@ContextConfiguration(locations = "/applicationContext.xml")
+public class FactoryBeanTest {
+
+	@Autowired
+	private ApplicationContext applicationContext;
+
+	@Test
+	public void getMessageFromFactoryBeanTest() {
+		Object message = applicationContext.getBean("message");
+		assertThat(Message.class.isInstance(message), is(true));
+		assertThat(((Message)message).getText(), is("Factory Bean"));
+	}
+
+	@Test
+	public void getFactoryBeanTest() {
+		Object factory = applicationContext.getBean("&message");
+		assertThat(MessageFactoryBean.class.isInstance(factory), is(true));
+	}
+}