使用Spring 新注解 configuration componentScan PropertySource 等、、

spring_annotation/src/main/java/AnnotationMain.java

@@ -0,0 +1,15 @@
+import com.Config.SpringConfiguration;
+import com.service.StudentService;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.annotation.AnnotationConfigApplicationContext;
+
+/**
+ * 使用注解引入容器
+ */
+public class AnnotationMain {
+    public static void main(String[] args) {
+        ApplicationContext applicationContext = new AnnotationConfigApplicationContext(SpringConfiguration.class);
+        Object jdbcUrl = applicationContext.getBean("getJdbcUrl");
+        StudentService bean = applicationContext.getBean(StudentService.class);
+    }
+}

spring_annotation/src/main/java/Main.java

@@ -23,9 +23,10 @@ public class Main {
         DruidPooledConnection connection = dataSource.getConnection();
         connection.close();
         // userService1 在 xml文件中定义
-         MqService mqService = applicationContext.getBean(MqServiceImpl.class);
-         mqService.pushRabbitMessage();
+       //  MqService mqService = applicationContext.getBean(MqServiceImpl.class);
+        // mqService.pushRabbitMessage();
 //         mqService.listenRabbitQueue();
+        Object testStringBean = beanFactory.getBean("testStringBean");
     }
 
 }

spring_annotation/src/main/java/com/Config/SpringConfiguration.java

@@ -0,0 +1,25 @@
+package com.Config;
+
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.ComponentScan;
+import org.springframework.context.annotation.Configuration;
+import org.springframework.context.annotation.PropertySource;
+
+/**
+ * spring 核心配置文件类
+ */
+@Configuration
+// 组件扫描
+//<context:component-scan base-package="com"></context:component-scan>
+@ComponentScan({"com"})
+@PropertySource("classpath:jdbc.properties")
+public class SpringConfiguration {
+    // 写一个dataSource
+    @Value("${jdbc.url}")
+    String jdbcUrl;
+    @Bean("getJdbcUrl")
+    public String getJdbcUrl() {
+        return jdbcUrl;
+    }
+}

spring_annotation/src/main/java/com/Config/TestConfiguration.java

@@ -0,0 +1,12 @@
+package com.Config;
+
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.Configuration;
+
+@Configuration
+public class TestConfiguration {
+    @Bean
+    public String testStringBean() {
+        return "String";
+    }
+}

spring_annotation/src/main/java/com/service/impl/MqServiceImpl.java

@@ -7,7 +7,7 @@ import org.springframework.stereotype.Service;
 import javax.annotation.PostConstruct;
 import java.io.IOException;
 
-@Service("MqServiceImpl")
+//@Service("MqServiceImpl")
 public class MqServiceImpl implements MqService {
     ConnectionFactory connectionFactory;
     Connection connection;

spring_annotation/src/main/resources/context.xml

@@ -19,5 +19,5 @@
         <property name="password" value="${jdbc.password}"></property>
     </bean>
     <!--    组件扫描-->
-    <context:component-scan base-package="com"></context:component-scan>
+<!--    <context:component-scan base-package="com"></context:component-scan>-->
 </beans>