feat: 添加spring四种自动装配模式

添加spring四种自动装配模式

youlai-laboratory/src/main/java/com/youlai/laboratory/spring/Bean.java

@@ -11,4 +11,12 @@ import org.springframework.stereotype.Component;
 @Component
 public class Bean {
 
+    public String user;
+
+    @Override
+    public String toString() {
+        return "Bean{" +
+                "user='" + user + '\'' +
+                '}';
+    }
 }

youlai-laboratory/src/main/java/com/youlai/laboratory/spring/DI/ByConstructorService.java

@@ -0,0 +1,24 @@
+package com.youlai.laboratory.spring.DI;
+
+import com.youlai.laboratory.spring.Bean;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Component;
+
+/**
+ * 通过构造器装配
+ *
+ * @author <a href="mailto:2256222053@qq.com">zc</a>
+ * @Date 2022/2/18 0018 22:30
+ */
+public class ByConstructorService {
+
+    private Bean bean;
+
+    public ByConstructorService(Bean bean) {
+        this.bean = bean;
+    }
+
+    public Bean getBean() {
+        return bean;
+    }
+}

youlai-laboratory/src/main/java/com/youlai/laboratory/spring/DI/ByDefaultService.java

@@ -0,0 +1,24 @@
+package com.youlai.laboratory.spring.DI;
+
+import com.youlai.laboratory.spring.Bean;
+import org.springframework.stereotype.Component;
+
+/**
+ *
+ * 演示默认装配（no）
+ * @author <a href="mailto:2256222053@qq.com">zc</a>
+ * @Date 2022/2/19 0019 17:50
+ */
+public class ByDefaultService {
+
+    public Bean bean;
+
+    @Override
+    public String toString() {
+        return "ByDefaultService{" +
+                "bean=" + bean +
+                '}';
+    }
+
+
+}

youlai-laboratory/src/main/java/com/youlai/laboratory/spring/DI/ByNameService.java

@@ -0,0 +1,26 @@
+package com.youlai.laboratory.spring.DI;
+
+import com.youlai.laboratory.spring.Bean;
+
+/**
+ *
+ *通过属性名称装配，需要提供set方法，且符合命名规范
+ * @author <a href="mailto:2256222053@qq.com">zc</a>
+ * @Date 2022/2/19 0019 17:50
+ */
+public class ByNameService {
+
+
+    public Bean bean;
+
+    @Override
+    public String toString() {
+        return "ByDefaultService{" +
+                "bean=" + bean +
+                '}';
+    }
+    //需要提供set方法，且命名为setXxx
+    public void setBean(Bean bean) {
+        this.bean = bean;
+    }
+}

youlai-laboratory/src/main/java/com/youlai/laboratory/spring/DI/ByTypeService.java

@@ -0,0 +1,22 @@
+package com.youlai.laboratory.spring.DI;
+
+import com.youlai.laboratory.spring.Bean;
+
+/**
+ *
+ * 通过属性类型装配
+ * @author <a href="mailto:2256222053@qq.com">zc</a>
+ * @Date 2022/2/19 0019 17:50
+ */
+public class ByTypeService {
+
+    public Bean bean;
+
+    @Override
+    public String toString() {
+        return "ByDefaultService{" +
+                "bean=" + bean +
+                '}';
+    }
+
+}

youlai-laboratory/src/main/java/com/youlai/laboratory/spring/DI/ConstructorService.java

@@ -26,4 +26,7 @@ public class ConstructorService {
         System.out.println(bean);
     }
 
+    public Bean getBean() {
+        return bean;
+    }
 }

youlai-laboratory/src/main/java/com/youlai/laboratory/spring/create/ConstructorService.java

@@ -1,9 +1,8 @@
 package com.youlai.laboratory.spring.create;
 
-import com.youlai.laboratory.spring.Test;
 
 /**
- * 说明描述
+ * 使用无参构造器实例化bean
  *
  * @author <a href="mailto:2256222053@qq.com">zc</a>
  * @Date 2022/2/18 0018 22:52

youlai-laboratory/src/main/resources/spring/DI/DIModel.xml

@@ -0,0 +1,23 @@
+<?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">
+
+
+    <bean id="no"
+          class="com.youlai.laboratory.spring.DI.ByDefaultService"/>
+
+    <bean id="bean" name="bean"
+          class="com.youlai.laboratory.spring.Bean"
+    />
+
+    <bean id="byName"
+          class="com.youlai.laboratory.spring.DI.ByNameService" autowire="byName"/>
+
+    <bean id="byType"
+          class="com.youlai.laboratory.spring.DI.ByTypeService" autowire="byType"/>
+
+    <bean id="constructor"
+          class="com.youlai.laboratory.spring.DI.ByConstructorService" autowire="constructor"/>
+
+</beans>

youlai-laboratory/src/test/java/com/youlai/laboratory/spring/DIModeTest.java

@@ -0,0 +1,55 @@
+package com.youlai.laboratory.spring;
+
+import com.youlai.laboratory.spring.DI.*;
+import lombok.extern.slf4j.Slf4j;
+import org.springframework.boot.test.context.SpringBootTest;
+import org.junit.jupiter.api.Test;
+import org.springframework.context.support.ClassPathXmlApplicationContext;
+
+import java.util.Optional;
+
+/**
+ * 测试4种自动装配模型，默认no,(no,byName,byName,constructor)
+ * @author <a href="mailto:2256222053@qq.com">zc</a>
+ * @Date 2022/2/19 0019 18:00
+ */
+@Slf4j
+@SpringBootTest
+public class DIModeTest {
+
+    @Test
+    void noTest(){
+        ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("classpath:spring/DI/DIModel.xml");
+        applicationContext.refresh();
+        ByDefaultService no = applicationContext.getBean("no", ByDefaultService.class);
+        log.info("装配成功？{}", no.bean==null);
+    }
+
+
+    @Test
+    void byName(){
+        ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("classpath:spring/DI/DIModel.xml");
+        applicationContext.refresh();
+        ByNameService byName = applicationContext.getBean("byName", ByNameService.class);
+        log.info("装配成功?：{}",byName.bean != null);
+    }
+
+    @Test
+    void byType(){
+        ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("classpath:spring/DI/DIModel.xml");
+        applicationContext.refresh();
+        ByTypeService byType = applicationContext.getBean("byType", ByTypeService.class);
+        log.info("装配成功?：{}",byType.bean != null);
+    }
+
+    @Test
+    void constructor(){
+        ClassPathXmlApplicationContext applicationContext = new ClassPathXmlApplicationContext("classpath:spring/DI/DIModel.xml");
+        applicationContext.refresh();
+        ByConstructorService constructor = applicationContext.getBean("constructor", ByConstructorService.class);
+        log.info("装配成功?：{}",constructor.getBean() != null);
+    }
+
+
+
+}

youlai-laboratory/src/test/java/com/youlai/laboratory/spring/DITypeTests.java

@@ -8,13 +8,13 @@ import org.springframework.boot.test.context.SpringBootTest;
 import org.springframework.context.annotation.AnnotationConfigApplicationContext;
 
 /**
- * 说明描述
+ * 测试两种注入方式(构造器和setter)
  *
  * @author <a href="mailto:2256222053@qq.com">zc</a>
  * @Date 2022/2/18 0018 21:04
  */
 @SpringBootTest
-public class DITests {
+public class DITypeTests {
 
 
     @Test