Spring component scan example

fishercoder1534 · fishercoder1534 · commit 9e5e748d3adb · 2016-08-06T10:27:46.000-07:00
diff --git a/SpringTutorials/src/spring_component_scan_example/Career.java b/SpringTutorials/src/spring_component_scan_example/Career.java
@@ -0,0 +1,16 @@
+package spring_component_scan_example;
+
+import lombok.Getter;
+import lombok.ToString;
+
+import org.springframework.stereotype.Service;
+
+@Service
+@ToString
+public class Career {
+	@Getter 
+	private String jobType;
+	
+	@Getter 
+	private int jobLevel;
+}
diff --git a/SpringTutorials/src/spring_component_scan_example/City.java b/SpringTutorials/src/spring_component_scan_example/City.java
@@ -0,0 +1,18 @@
+package spring_component_scan_example;
+
+import org.springframework.stereotype.Repository;
+
+import lombok.Getter;
+import lombok.Setter;
+import lombok.ToString;
+
+@Repository
+@ToString
+public class City {
+	@Getter
+	private String cityName;
+	
+	@Getter
+	private String area;
+
+}
diff --git a/SpringTutorials/src/spring_component_scan_example/MainApp.java b/SpringTutorials/src/spring_component_scan_example/MainApp.java
@@ -0,0 +1,22 @@
+package spring_component_scan_example;
+
+import org.springframework.context.support.AbstractApplicationContext;
+import org.springframework.context.support.ClassPathXmlApplicationContext;
+
+/**This app is running fine! It helps me understand how component scan works! Cool!
+* Look at this project along with other two:
+ * Spring@ResourceAnnotationExample
+ * SpringComponentScanExample
+ * to help me better understand the three possible ways to do DI using Spring.*/
+
+public class MainApp {
+
+    public static void main(String... args) {
+    	AbstractApplicationContext context = new ClassPathXmlApplicationContext("spring_component_scan_example/spring.xml");
+            Person p =(Person) context.getBean("person");
+
+            System.out.println(p.getCity().toString());
+            System.out.println(p.getWife().toString());
+            System.out.println(p.getCareer().toString());
+    } 
+}
diff --git a/SpringTutorials/src/spring_component_scan_example/Person.java b/SpringTutorials/src/spring_component_scan_example/Person.java
@@ -0,0 +1,22 @@
+package spring_component_scan_example;
+
+import lombok.Getter;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+public class Person {
+	@Getter 
+	@Autowired
+	private City city;
+
+	@Getter 
+	@Autowired
+	private Wife wife;
+	
+	@Getter
+	@Autowired
+	private Career career;
+	
+}
diff --git a/SpringTutorials/src/spring_component_scan_example/Wife.java b/SpringTutorials/src/spring_component_scan_example/Wife.java
@@ -0,0 +1,20 @@
+package spring_component_scan_example;
+
+import org.springframework.stereotype.Component;
+import org.springframework.stereotype.Repository;
+
+import lombok.Getter;
+import lombok.Setter;
+import lombok.ToString;
+
+@Component
+@ToString
+public class Wife {
+	
+	@Setter @Getter
+	private String name;
+	
+	@Setter @Getter
+	private String faith;
+
+}
diff --git a/SpringTutorials/src/spring_component_scan_example/spring.xml b/SpringTutorials/src/spring_component_scan_example/spring.xml
@@ -0,0 +1,18 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xmlns:context="http://www.springframework.org/schema/context"
+       xsi:schemaLocation="http://www.springframework.org/schema/beans 
+           http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
+           http://www.springframework.org/schema/context
+           http://www.springframework.org/schema/context/spring-context-3.0.xsd">
+
+<!-- All magic hides within this line:
+It does a component scan for this package, so any beans that have any one of the following three annotations:
+@Repository, @Service or @Component
+will be scanned and autowired up.
+Also I'll have to put @Autowired annotation on those private fields inside that Person clalss. -->
+
+<context:component-scan base-package="spring_component_scan_example"/>  
+
+</beans>
