注解配置模块

.idea/compiler.xml

@@ -7,6 +7,7 @@
         <sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
         <outputRelativeToContentRoot value="true" />
         <module name="springLearn202503" />
+        <module name="springLearn20250422" />
       </profile>
     </annotationProcessing>
   </component>

.idea/encodings.xml

@@ -3,5 +3,7 @@
   <component name="Encoding">
     <file url="file://$PROJECT_DIR$/springLearn202503/src/main/java" charset="UTF-8" />
     <file url="file://$PROJECT_DIR$/springLearn202503/src/main/resources" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/springLearn20250422/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/springLearn20250422/src/main/resources" charset="UTF-8" />
   </component>
 </project>

.idea/misc.xml

@@ -5,6 +5,7 @@
     <option name="originalFiles">
       <list>
         <option value="$PROJECT_DIR$/springLearn202503/pom.xml" />
+        <option value="$PROJECT_DIR$/springLearn20250422/pom.xml" />
       </list>
     </option>
   </component>

springLearn202503/src/main/java/com/sec/Main.java

@@ -4,6 +4,7 @@ import com.alibaba.druid.pool.DruidDataSource;
 import com.alibaba.druid.pool.DruidPooledConnection;
 import com.mchange.v2.c3p0.ComboPooledDataSource;
 import com.sec.dao.UserDao;
+import com.sec.service.UserService;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 import org.springframework.context.support.ClassPathXmlApplicationContext;
 import org.springframework.context.support.FileSystemXmlApplicationContext;
@@ -21,7 +22,8 @@ public class Main {
     static String password = "";
 
     public static void main(String[] args) {
-        Main.getSpring();
+//        Main.getSpring();
+        Main.getSpring1();
         Main.getSetting();
         Main.getDruid();
         Main.getC3p0();
@@ -42,6 +44,12 @@ public class Main {
 //      userDao.getData();
     }
 
+    public static  void getSpring1(){
+        ClassPathXmlApplicationContext application=new ClassPathXmlApplicationContext("application.xml");
+        UserService userService= (UserService)application.getBean("UserService");
+        userService.getUser();
+    }
+
     //读取properties文件 对数据库连接信息进行设置
     //目的是为了将配置信息与代码进行解耦
     public static void getSetting(){
@@ -52,6 +60,7 @@ public class Main {
         password=rb.getString("jdbc.password");
     }
 
+    //数据库连接池
     public static void getDruid(){
         DruidDataSource druidDataSource=new DruidDataSource();
         druidDataSource.setDriverClassName(driver);

springLearn202503/src/main/java/com/sec/service/UserService.java

@@ -0,0 +1,10 @@
+package com.sec.service;
+
+import com.sec.dao.UserDao;
+import com.sec.dao.impl.UserDaoImpl;
+
+public interface UserService {
+
+
+    public void getUser();
+}

springLearn202503/src/main/java/com/sec/service/impl/UserServiceImpl.java

@@ -0,0 +1,20 @@
+package com.sec.service.impl;
+
+import com.sec.dao.UserDao;
+import com.sec.service.UserService;
+
+public class UserServiceImpl implements UserService {
+    public UserDao userDao;
+   /* public void setUserDao(UserDao userDao){
+        this.userDao = userDao;
+    };*/
+
+    public UserServiceImpl(UserDao userDao) {
+        this.userDao = userDao;
+    }
+
+    @Override
+    public void getUser() {
+        userDao.getData();
+    }
+}

springLearn202503/src/main/resources/application.xml

@@ -3,7 +3,18 @@
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
 <!--    <bean id="UserDao" class="com.impl.dao.com.sec.UserDaoImpl" scope="singleton" init-method="init" destroy-method="destroy"></bean>-->
-<!--    <bean id="UserDao" class="com.factroy.com.sec.StaticFactroy" factory-method="getUserDao"></bean>-->
+<!--    <bean id="UserDao" class="com.sec.factroy.StaticFactroy" factory-method="getUserDao"></bean>-->
-    <bean id="DemoFactroy" class="com.sec.factroy.DemoFactroy"></bean>
+<!--    <bean id="DemoFactroy" class="com.sec.factroy.DemoFactroy"></bean>
-    <bean id="UserDao" factory-bean="DemoFactroy" factory-method="getDao"></bean>
+    <bean id="UserDao" factory-bean="DemoFactroy" factory-method="getDao"></bean>-->
+    <bean id="UserDao" class="com.sec.dao.impl.UserDaoImpl"></bean>
+<!-- set方式进行依赖注入
+    <bean id="UserService" class="com.sec.service.impl.UserServiceImpl">
+        <property name="userDao" ref="UserDao"></property>
+    </bean>
+-->
+<!--构造方法进行依赖注入-->
+    <bean id="UserService" class="com.sec.service.impl.UserServiceImpl">
+        <constructor-arg name="userDao" ref="UserDao"></constructor-arg>
+    </bean>
+
 </beans>

springLearn202503/target/classes/application.xml

@@ -3,7 +3,13 @@
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
 <!--    <bean id="UserDao" class="com.impl.dao.com.sec.UserDaoImpl" scope="singleton" init-method="init" destroy-method="destroy"></bean>-->
-<!--    <bean id="UserDao" class="com.factroy.com.sec.StaticFactroy" factory-method="getUserDao"></bean>-->
+<!--    <bean id="UserDao" class="com.sec.factroy.StaticFactroy" factory-method="getUserDao"></bean>-->
-    <bean id="DemoFactroy" class="com.sec.factroy.DemoFactroy"></bean>
+<!--    <bean id="DemoFactroy" class="com.sec.factroy.DemoFactroy"></bean>
-    <bean id="UserDao" factory-bean="DemoFactroy" factory-method="getDao"></bean>
+    <bean id="UserDao" factory-bean="DemoFactroy" factory-method="getDao"></bean>-->
+    <bean id="UserDao" class="com.sec.dao.impl.UserDaoImpl"></bean>
+    <bean id="UserService" class="com.sec.service.impl.UserServiceImpl">
+<!--        <property name="userDao" ref="UserDao"></property>-->
+        <constructor-arg name="userDao" ref="UserDao"></constructor-arg>
+    </bean>
+
 </beans>

springLearn20250422/pom.xml

@@ -0,0 +1,34 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>com.sec</groupId>
+    <artifactId>springLearn20250422</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>8</maven.compiler.source>
+        <maven.compiler.target>8</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>5.3.21</version>
+        </dependency>
+        <dependency>
+            <groupId>mysql</groupId>
+            <artifactId>mysql-connector-java</artifactId>
+            <version>8.0.23</version>
+        </dependency>
+        <dependency>
+            <groupId>com.alibaba</groupId>
+            <artifactId>druid</artifactId>
+            <version>1.1.22</version>
+        </dependency>
+    </dependencies>
+
+</project>

springLearn20250422/src/main/java/com/sec/config/JdbcConfig.java

@@ -0,0 +1,34 @@
+package com.sec.config;
+
+
+import com.alibaba.druid.pool.DruidDataSource;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.Bean;
+import org.springframework.context.annotation.PropertySource;
+
+/*
+* 在多个配置的情况下 配置文件根据不同功能进行拆分
+* 在主配置中导入即可
+*
+ */
+@PropertySource("classpath:jdbc.properties")
+public class JdbcConfig {
+    @Value("${jdbc.driver}")
+    private String driverClassName ;
+    @Value("${jdbc.url}")
+    private String jdbcUrl;
+    @Value("${jdbc.user}")
+    private String username ;
+    @Value("${jdbc.password}")
+    private String password;
+
+    @Bean("DruidDataSource")
+    public DruidDataSource getDruidDataSource() {
+        DruidDataSource druidDataSource = new DruidDataSource();
+        druidDataSource.setDriverClassName(driverClassName);
+        druidDataSource.setUrl(jdbcUrl);
+        druidDataSource.setUsername(username);
+        druidDataSource.setPassword(password);
+        return druidDataSource;
+    }
+}

springLearn20250422/src/main/java/com/sec/config/LearnConfig.java

@@ -0,0 +1,19 @@
+package com.sec.config;
+
+import com.alibaba.druid.pool.DruidDataSource;
+import org.springframework.beans.factory.annotation.Value;
+import org.springframework.context.annotation.*;
+
+/*
+* @Configuration 表明当前类是 配置类
+* @ComponentScan扫描对应文件下的注解格式的bean进行注入
+* @PropertySource加载对应的属性文件 用@Value将数据进行注入赋值
+* @Value简单类型注入 直接@Value("要注入的数据")
+* 将属性文件的变量数值进行注入  @Value("${要注入的数据变量名称}") 配合@PropertySource使用
+* */
+@Configuration
+@ComponentScan("com.sec")
+@Import(JdbcConfig.class)
+public class LearnConfig {
+
+}

springLearn20250422/src/main/java/com/sec/dao/LearnDao.java

@@ -0,0 +1,5 @@
+package com.sec.dao;
+
+public interface LearnDao {
+    public void getLearnData();
+}

springLearn20250422/src/main/java/com/sec/dao/impl/LearnDaoImpl.java

@@ -0,0 +1,37 @@
+package com.sec.dao.impl;
+
+import com.alibaba.druid.pool.DruidDataSource;
+import com.alibaba.druid.pool.DruidPooledConnection;
+import com.sec.dao.LearnDao;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Repository;
+
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.sql.Statement;
+
+/*
+* @Component该类为spring管理的bean
+* 其衍生了三种注解
+* @Controller  表现层
+* @Service     业务层
+* @Repository  数据层
+* */
+@Repository
+public class LearnDaoImpl implements LearnDao {
+    @Autowired
+    private DruidDataSource druidDataSource;
+    @Override
+    public void getLearnData() {
+        try {
+            DruidPooledConnection connection = druidDataSource.getConnection();
+            Statement statement = connection.createStatement();
+            ResultSet resultSet = statement.executeQuery("select * from user_info");
+            while (resultSet.next()) {
+                System.out.println(resultSet.getString("user_name"));
+            }
+        } catch (SQLException e) {
+            throw new RuntimeException(e);
+        }
+    }
+}

springLearn20250422/src/main/java/com/sec/service/LearnService.java

@@ -0,0 +1,5 @@
+package com.sec.service;
+
+public interface LearnService {
+    public void learn();
+}

springLearn20250422/src/main/java/com/sec/service/impl/LearnServiceImpl.java

@@ -0,0 +1,17 @@
+package com.sec.service.impl;
+
+import com.sec.dao.LearnDao;
+import com.sec.service.LearnService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+@Service
+public class LearnServiceImpl implements LearnService {
+
+    @Autowired
+    public LearnDao learnDao;
+    @Override
+    public void learn() {
+        learnDao.getLearnData();
+    }
+}

springLearn20250422/src/main/resources/application.xml

@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd">
+</beans>

springLearn20250422/src/main/resources/jdbc.properties

@@ -0,0 +1,4 @@
+jdbc.driver=com.mysql.jdbc.Driver
+jdbc.url=jdbc:mysql://47.103.155.22:3306/learn_spring
+jdbc.user=root
+jdbc.password=mysql_wafeYX