3_DI

build.gradle.kts

@@ -19,8 +19,10 @@ repositories {
 
 dependencies {
 	implementation("org.springframework.boot:spring-boot-starter")
+	implementation("org.projectlombok:lombok:1.18.30")
 	testImplementation("org.springframework.boot:spring-boot-starter-test")
 	testRuntimeOnly("org.junit.platform:junit-platform-launcher")
+	annotationProcessor("org.projectlombok:lombok")
 }
 
 tasks.withType<Test> {

src/main/java/org/javaspringcourse/controller/AccountBaseLevel.java

@@ -0,0 +1,30 @@
+package org.javaspringcourse.controller;
+
+import jakarta.annotation.PostConstruct;
+import jakarta.annotation.PreDestroy;
+import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
+import org.javaspringcourse.service.TransactionService;
+import org.springframework.stereotype.Controller;
+
+@Slf4j
+@Controller
+@RequiredArgsConstructor
+public class AccountBaseLevel {
+    private final TransactionService service; // Внедрение через конструктор
+
+    @PostConstruct
+    public void create() {
+        log.info("Create AccountBaseLevel bean");
+    }
+
+    public void someOperation() {
+        service.createTransaction();
+        service.transaction();
+    }
+
+    @PreDestroy
+    public void destroy() {
+        log.info("Destroy AccountBaseLevel bean");
+    }
+}

src/main/java/org/javaspringcourse/controller/AccountPremiumLevel.java

@@ -0,0 +1,41 @@
+package org.javaspringcourse.controller;
+
+import jakarta.annotation.PostConstruct;
+import jakarta.annotation.PreDestroy;
+import lombok.Setter;
+import lombok.extern.slf4j.Slf4j;
+import org.javaspringcourse.service.TransactionService;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.beans.factory.annotation.Qualifier;
+import org.springframework.stereotype.Controller;
+
+@Slf4j
+@Controller
+public class AccountPremiumLevel {
+    @Autowired
+    private TransactionService deposit; // Внедрение через поле
+
+    @Setter(onMethod_ = @Autowired)
+    @Qualifier("WithdrawService")
+    private TransactionService withdraw; // Внедрение через сеттер
+
+    @PostConstruct
+    public void create() {
+        log.info("Create AccountPremiumLevel bean");
+    }
+
+    public void deposit() {
+        deposit.createTransaction();
+        deposit.transaction();
+    }
+
+    public void withdraw() {
+        withdraw.createTransaction();
+        withdraw.transaction();
+    }
+
+    @PreDestroy
+    public void destroy() {
+        log.info("Destroy AccountPremiumLevel bean");
+    }
+}

src/main/java/org/javaspringcourse/service/TransactionService.java

@@ -0,0 +1,6 @@
+package org.javaspringcourse.service;
+
+public interface TransactionService {
+    void createTransaction();
+    void transaction();
+}

src/main/java/org/javaspringcourse/service/implementation/DepositService.java

@@ -0,0 +1,34 @@
+package org.javaspringcourse.service.implementation;
+
+import jakarta.annotation.PostConstruct;
+import jakarta.annotation.PreDestroy;
+import lombok.extern.slf4j.Slf4j;
+import org.javaspringcourse.service.TransactionService;
+import org.springframework.context.annotation.Primary;
+import org.springframework.stereotype.Service;
+
+@Slf4j
+@Service
+@Primary
+public class DepositService implements TransactionService {
+
+    @PostConstruct
+    public void create() {
+        log.info("Create DepositService bean");
+    }
+
+    @Override
+    public void createTransaction() {
+        System.out.println("Create Deposit Transaction");
+    }
+
+    @Override
+    public void transaction() {
+        System.out.println("Deposit transaction...");
+    }
+
+    @PreDestroy
+    public void destroy() {
+        log.info("Destroy DepositService bean");
+    }
+}

src/main/java/org/javaspringcourse/service/implementation/WithdrawService.java

@@ -0,0 +1,32 @@
+package org.javaspringcourse.service.implementation;
+
+import jakarta.annotation.PostConstruct;
+import jakarta.annotation.PreDestroy;
+import lombok.extern.slf4j.Slf4j;
+import org.javaspringcourse.service.TransactionService;
+import org.springframework.stereotype.Service;
+
+@Slf4j
+@Service
+public class WithdrawService implements TransactionService {
+
+    @PostConstruct
+    public void create() {
+        log.info("Create WithdrawService bean");
+    }
+
+    @Override
+    public void createTransaction() {
+        System.out.println("Create Withdraw Transaction");
+    }
+
+    @Override
+    public void transaction() {
+        System.out.println("Withdraw transaction...");
+    }
+
+    @PreDestroy
+    public void destroy() {
+        log.info("Destroy WithdrawService bean");
+    }
+}