Spring Boot 之配置注解使用

springboot-configuration/src/main/java/org/spring/springboot/Application.java

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+package org.spring.springboot;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+/**
+ * Spring Boot 应用启动类
+ *
+ */
+// Spring Boot 应用的标识
+@SpringBootApplication
+public class Application {
+
+    public static void main(String[] args) {
+        // 程序启动入口
+        // 启动嵌入式的 Tomcat 并初始化 Spring 环境及其各 Spring 组件
+        SpringApplication.run(Application.class,args);
+    }
+}

springboot-configuration/src/main/java/org/spring/springboot/config/MessageConfiguration.java

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+package org.spring.springboot.config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+/**
+ * Created by bysocket on 08/09/2017.
+ */
+@Configuration
+public class MessageConfiguration {
+
+    @Bean
+    public String message() {
+        return "message configuration";
+    }
+}

springboot-configuration/src/test/java/org/spring/springboot/config/MessageConfigurationTest.java

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+package org.spring.springboot.config;
+
+import org.junit.Test;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+
+import static org.junit.Assert.assertEquals;
+
+/**
+ * Spring Boot MessageConfiguration 测试 - {@link MessageConfiguration}
+ *
+ */
+public class MessageConfigurationTest {
+
+    @Test
+    public void testGetMessageBean() throws Exception {
+        AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext(MessageConfiguration.class);
+        assertEquals("message configuration", ctx.getBean("message"));
+    }
+
+    @Test
+    public void testScanPackages() throws Exception {
+        AnnotationConfigApplicationContext ctx = new AnnotationConfigApplicationContext();
+        ctx.scan("org.spring.springboot");
+        ctx.refresh();
+        assertEquals("message configuration", ctx.getBean("message"));
+    }
+}