5/22 12:20

.idea/compiler.xml

@@ -8,11 +8,13 @@
         <sourceTestOutputDir name="target/generated-test-sources/test-annotations" />
         <outputRelativeToContentRoot value="true" />
         <module name="spring519" />
+        <module name="mybatis519" />
+        <module name="spring522-annotation" />
+        <module name="spring522" />
         <module name="mybatis516" />
         <module name="demo516" />
         <module name="demo515" />
         <module name="mybatis517-518" />
-        <module name="mybatis519" />
       </profile>
     </annotationProcessing>
   </component>

.idea/encodings.xml

@@ -13,5 +13,9 @@
     <file url="file://$PROJECT_DIR$/mybatis519/src/main/resources" charset="UTF-8" />
     <file url="file://$PROJECT_DIR$/spring519/src/main/java" charset="UTF-8" />
     <file url="file://$PROJECT_DIR$/spring519/src/main/resources" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/spring522-annotation/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/spring522-annotation/src/main/resources" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/spring522/src/main/java" charset="UTF-8" />
+    <file url="file://$PROJECT_DIR$/spring522/src/main/resources" charset="UTF-8" />
   </component>
 </project>

.idea/misc.xml

@@ -14,6 +14,8 @@
         <option value="$PROJECT_DIR$/mybatis517-518/pom.xml" />
         <option value="$PROJECT_DIR$/mybatis519/pom.xml" />
         <option value="$PROJECT_DIR$/spring519/pom.xml" />
+        <option value="$PROJECT_DIR$/spring522/pom.xml" />
+        <option value="$PROJECT_DIR$/spring522-annotation/pom.xml" />
       </list>
     </option>
   </component>

spring522-annotation/pom.xml

@@ -0,0 +1,36 @@
+<?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>cn.czyx007</groupId>
+    <artifactId>spring522-annotation</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>5.3.23</version>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.13.2</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.20</version>
+        </dependency>
+    </dependencies>
+
+</project>

spring522-annotation/src/main/java/cn/czyx007/bean/User.java

@@ -0,0 +1,19 @@
+package cn.czyx007.bean;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+/**
+ * @author : 张宇轩
+ * @createTime : 2023/5/22 - 9:34
+ */
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class User {
+    private String id;
+    private String userName;
+    private String address;
+    private Integer age;
+}

spring522-annotation/src/main/java/cn/czyx007/dao/UserDao.java

@@ -0,0 +1,12 @@
+package cn.czyx007.dao;
+
+import cn.czyx007.bean.User;
+
+/**
+ * @author : 张宇轩
+ * @createTime : 2023/5/22 - 9:35
+ */
+public interface UserDao {
+    //根据id查询用户信息
+    User getUser(String id);
+}

spring522-annotation/src/main/java/cn/czyx007/dao/impl/MysqlUserDaoImpl.java

@@ -0,0 +1,19 @@
+package cn.czyx007.dao.impl;
+
+import cn.czyx007.bean.User;
+import cn.czyx007.dao.UserDao;
+import org.springframework.stereotype.Repository;
+
+/**
+ * @author : 张宇轩
+ * @createTime : 2023/5/22 - 9:36
+ */
+@Repository(value = "mysqlUserDao")
+public class MysqlUserDaoImpl implements UserDao {
+
+    @Override
+    public User getUser(String id) {
+        System.out.println("通过MySQl查询用户信息成功");
+        return null;
+    }
+}

spring522-annotation/src/main/java/cn/czyx007/dao/impl/OracleUserDaoImpl.java

@@ -0,0 +1,18 @@
+package cn.czyx007.dao.impl;
+
+import cn.czyx007.bean.User;
+import cn.czyx007.dao.UserDao;
+import org.springframework.stereotype.Repository;
+
+/**
+ * @author : 张宇轩
+ * @createTime : 2023/5/22 - 9:37
+ */
+@Repository(value = "oracleUserDao")
+public class OracleUserDaoImpl implements UserDao {
+    @Override
+    public User getUser(String id) {
+        System.out.println("通过Oracle查询用户信息成功");
+        return null;
+    }
+}

spring522-annotation/src/main/java/cn/czyx007/service/UserService.java

@@ -0,0 +1,11 @@
+package cn.czyx007.service;
+
+import cn.czyx007.bean.User;
+
+/**
+ * @author : 张宇轩
+ * @createTime : 2023/5/22 - 9:40
+ */
+public interface UserService {
+    User findUserById(String id);
+}

spring522-annotation/src/main/java/cn/czyx007/service/impl/UserServiceImpl.java

@@ -0,0 +1,27 @@
+package cn.czyx007.service.impl;
+
+import cn.czyx007.bean.User;
+import cn.czyx007.dao.UserDao;
+import cn.czyx007.service.UserService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.stereotype.Service;
+
+/**
+ * @author : 张宇轩
+ * @createTime : 2023/5/22 - 9:41
+ */
+//若使用注解方式，则不需要主动提供sette方法
+@Service("userService")
+public class UserServiceImpl implements UserService {
+    //自动注入
+    @Autowired
+    //指定使用哪一个dao
+    @Qualifier("mysqlUserDao")
+    UserDao userDao;
+
+    @Override
+    public User findUserById(String id) {
+        return userDao.getUser(id);
+    }
+}

spring522-annotation/src/main/resources/spring.xml

@@ -0,0 +1,13 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<beans xmlns="http://www.springframework.org/schema/beans"
+       xmlns:context="http://www.springframework.org/schema/context"
+       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
+       http://www.springframework.org/schema/context
+       http://www.springframework.org/schema/context/spring-context.xsd">
+
+    <!-- 开启注解扫描包 -->
+    <context:component-scan base-package="cn.czyx007.*"/>
+
+</beans>

spring522-annotation/src/test/java/TestDemo.java

@@ -0,0 +1,19 @@
+import cn.czyx007.bean.User;
+import cn.czyx007.service.impl.UserServiceImpl;
+import org.junit.Test;
+import org.springframework.context.ApplicationContext;
+import org.springframework.context.support.ClassPathXmlApplicationContext;
+
+/**
+ * @author : 张宇轩
+ * @createTime : 2023/5/22 - 11:44
+ */
+public class TestDemo {
+    @Test
+    public void test1(){
+        ApplicationContext app = new ClassPathXmlApplicationContext("spring.xml");
+        UserServiceImpl userService = app.getBean("userService", UserServiceImpl.class);
+        User user = userService.findUserById("1");
+        System.out.println("user = " + user);
+    }
+}

spring522/pom.xml

@@ -0,0 +1,35 @@
+<?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>cn.czyx007</groupId>
+    <artifactId>spring522</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <properties>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+    </properties>
+    <dependencies>
+        <dependency>
+            <groupId>org.springframework</groupId>
+            <artifactId>spring-context</artifactId>
+            <version>5.3.23</version>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <version>4.13.2</version>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>org.projectlombok</groupId>
+            <artifactId>lombok</artifactId>
+            <version>1.18.20</version>
+        </dependency>
+    </dependencies>
+
+</project>

spring522/src/main/java/cn/czyx007/bean/Dog.java

@@ -0,0 +1,22 @@
+package cn.czyx007.bean;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+
+/**
+ * @author : 张宇轩
+ * @createTime : 2023/5/19 - 15:59
+ */
+@Data
+//@NoArgsConstructor
+@AllArgsConstructor
+public class Dog {
+    public Dog() {
+        System.out.println("狗出生了");
+    }
+
+    private String name;
+    public void eat(){
+        System.out.println(name + "的狗吃骨头...");
+    }
+}

spring522/src/main/java/cn/czyx007/bean/User.java

@@ -0,0 +1,19 @@
+package cn.czyx007.bean;
+
+import lombok.AllArgsConstructor;
+import lombok.Data;
+import lombok.NoArgsConstructor;
+
+/**
+ * @author : 张宇轩
+ * @createTime : 2023/5/22 - 9:34
+ */
+@Data
+@NoArgsConstructor
+@AllArgsConstructor
+public class User {
+    private String id;
+    private String userName;
+    private String address;
+    private Integer age;
+}

spring522/src/main/java/cn/czyx007/dao/UserDao.java

@@ -0,0 +1,12 @@
+package cn.czyx007.dao;
+
+import cn.czyx007.bean.User;
+
+/**
+ * @author : 张宇轩
+ * @createTime : 2023/5/22 - 9:35
+ */
+public interface UserDao {
+    //根据id查询用户信息
+    User getUser(String id);
+}

spring522/src/main/java/cn/czyx007/dao/impl/MysqlUserDaoImpl.java

@@ -0,0 +1,17 @@
+package cn.czyx007.dao.impl;
+
+import cn.czyx007.bean.User;
+import cn.czyx007.dao.UserDao;
+
+/**
+ * @author : 张宇轩
+ * @createTime : 2023/5/22 - 9:36
+ */
+public class MysqlUserDaoImpl implements UserDao {
+
+    @Override
+    public User getUser(String id) {
+        System.out.println("通过MySQl查询用户信息成功");
+        return null;
+    }
+}

spring522/src/main/java/cn/czyx007/dao/impl/OracleUserDaoImpl.java

@@ -0,0 +1,16 @@
+package cn.czyx007.dao.impl;
+
+import cn.czyx007.bean.User;
+import cn.czyx007.dao.UserDao;
+
+/**
+ * @author : 张宇轩
+ * @createTime : 2023/5/22 - 9:37
+ */
+public class OracleUserDaoImpl implements UserDao {
+    @Override
+    public User getUser(String id) {
+        System.out.println("通过Oracle查询用户信息成功");
+        return null;
+    }
+}

spring522/src/main/java/cn/czyx007/service/UserService.java

@@ -0,0 +1,11 @@
+package cn.czyx007.service;
+
+import cn.czyx007.bean.User;
+
+/**
+ * @author : 张宇轩
+ * @createTime : 2023/5/22 - 9:40
+ */
+public interface UserService {
+    User findUserById(String id);
+}

spring522/src/main/java/cn/czyx007/service/impl/MysqlUserServiceImpl.java

@@ -0,0 +1,24 @@
+package cn.czyx007.service.impl;
+
+import cn.czyx007.bean.User;
+import cn.czyx007.dao.UserDao;
+import cn.czyx007.service.UserService;
+
+/**
+ * @author : 张宇轩
+ * @createTime : 2023/5/22 - 9:41
+ */
+public class MysqlUserServiceImpl implements UserService {
+    //高耦合，换用spring解耦合
+//    UserDao userDao = new MysqlUserDaoImpl();
+    UserDao userDao;
+
+    public void setUserDao(UserDao userDao) {
+        this.userDao = userDao;
+    }
+
+    @Override
+    public User findUserById(String id) {
+        return userDao.getUser(id);
+    }
+}

spring522/src/main/java/cn/czyx007/service/impl/OracleUserServiceImpl.java

@@ -0,0 +1,23 @@
+package cn.czyx007.service.impl;
+
+import cn.czyx007.bean.User;
+import cn.czyx007.dao.UserDao;
+import cn.czyx007.service.UserService;
+
+/**
+ * @author : 张宇轩
+ * @createTime : 2023/5/22 - 9:41
+ */
+public class OracleUserServiceImpl implements UserService {
+//    UserDao userDao = new OracleUserDaoImpl();
+    UserDao userDao;
+
+    public void setUserDao(UserDao userDao) {
+        this.userDao = userDao;
+    }
+
+    @Override
+    public User findUserById(String id) {
+        return userDao.getUser(id);
+    }
+}

spring522/src/main/resources/spring.xml

@@ -0,0 +1,36 @@
+<?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">
+    <!--
+    scope=prototype 设置多例模式
+    默认单例
+    lazy-init="true" 懒加载
+    -->
+    <bean id="dog" class="cn.czyx007.bean.Dog" scope="prototype" lazy-init="true">
+        <!--        依赖注入，对 对象属性赋值 -->
+        <!-- 需要提供setter方法，因为该标签使用setter注入方式  -->
+        <property name="name" value="xxx"/>
+    </bean>
+
+<!--    把dao的实现交给spring管理-->
+    <bean id="mysqlUserDao" class="cn.czyx007.dao.impl.MysqlUserDaoImpl"/>
+    <bean id="oracleUserDao" class="cn.czyx007.dao.impl.OracleUserDaoImpl"/>
+
+<!--    把service的实现交给spring管理-->
+    <bean id="mysqlUserService" class="cn.czyx007.service.impl.UserServiceImpl">
+        <!--注入dao对象-->
+        <property name="userDao" ref="mysqlUserDao"/>
+    </bean>
+    <bean id="oracleUserService" class="cn.czyx007.service.impl.OracleUserServiceImpl">
+        <property name="userDao" ref="oracleUserDao"/>
+    </bean>
+
+    <!--通过构造器依赖注入-->
+    <bean id="user" class="cn.czyx007.bean.User">
+        <constructor-arg index="0" type="java.lang.String" name="id" value="1001"/>
+        <constructor-arg index="1" type="java.lang.String" name="userName" value="柳岩"/>
+        <constructor-arg index="2" type="java.lang.String" name="address" value="北京"/>
+        <constructor-arg index="3" type="java.lang.Integer" name="age" value="18"/>
+    </bean>
+</beans>

spring522/src/test/java/TestDemo.java

@@ -0,0 +1,43 @@
+import cn.czyx007.bean.Dog;
+import cn.czyx007.bean.User;
+import cn.czyx007.service.impl.OracleUserServiceImpl;
+import org.junit.Test;
+import org.springframework.context.support.ClassPathXmlApplicationContext;
+
+/**
+ * @author : 张宇轩
+ * @createTime : 2023/5/22 - 9:31
+ */
+public class TestDemo {
+    @Test
+    public void test1(){
+        ClassPathXmlApplicationContext app = new ClassPathXmlApplicationContext("spring.xml");
+        Dog dog = app.getBean("dog", Dog.class);
+        dog.eat();
+        Dog dog1 = app.getBean("dog", Dog.class);
+        System.out.println("是否是同一个对象 " + (dog == dog1));
+    }
+
+    //要注意交给spring管理后不能再自己new
+    @Test
+    public void test2(){
+        OracleUserServiceImpl userService = new OracleUserServiceImpl();
+        User user = userService.findUserById("1");
+        System.out.println("user = " + user);
+    }
+
+    @Test
+    public void test3(){
+        ClassPathXmlApplicationContext app = new ClassPathXmlApplicationContext("spring.xml");
+        OracleUserServiceImpl userService = app.getBean("oracleUserService", OracleUserServiceImpl.class);
+        User user = userService.findUserById("1");
+        System.out.println("user = " + user);
+    }
+
+    @Test
+    public void test4(){
+        ClassPathXmlApplicationContext app = new ClassPathXmlApplicationContext("spring.xml");
+        User user = app.getBean("user", User.class);
+        System.out.println("user = " + user);
+    }
+}