스코프 + Provider Log

Author: zingwang

core/build.gradle

@@ -28,7 +28,9 @@ dependencies {
     implementation 'org.springframework.boot:spring-boot-starter-web'
 	testImplementation 'org.springframework.boot:spring-boot-starter-test'
     testImplementation 'junit:junit:4.13.1'
+
 	implementation 'jakarta.inject:jakarta.inject-api:2.0.1'
+	implementation 'org.springframework.boot:spring-boot-starter-web'
 }
 
 tasks.named('test') {

core/src/main/java/hello/core/common/MyLogger.java

@@ -0,0 +1,28 @@
+package hello.core.common;
+import jakarta.annotation.PostConstruct;
+import jakarta.annotation.PreDestroy;
+import org.springframework.context.annotation.Scope;
+import org.springframework.stereotype.Component;
+
+import java.util.UUID;
+@Component
+@Scope(value = "request")
+public class MyLogger {
+    private String uuid;
+    private String requestURL;
+    public void setRequestURL(String requestURL) {
+        this.requestURL = requestURL;
+    }
+    public void log(String message) {
+        System.out.println("[" + uuid + "]" + "[" + requestURL + "] " + message);
+    }
+    @PostConstruct
+    public void init() {
+        uuid = UUID.randomUUID().toString();
+        System.out.println("[" + uuid + "] request scope bean create:" + this);
+    }
+    @PreDestroy
+    public void close() {
+        System.out.println("[" + uuid + "] request scope bean close:" + this);
+    }
+}

core/src/main/java/hello/core/web/LogDemoController.java

@@ -0,0 +1,29 @@
+package hello.core.web;
+import hello.core.common.MyLogger;
+import jakarta.servlet.http.HttpServletRequest;
+import lombok.RequiredArgsConstructor;
+import org.springframework.beans.factory.ObjectProvider;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Controller;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.ResponseBody;
+
+@Controller
+@RequiredArgsConstructor
+public class LogDemoController {
+
+    private final LogDemoService logDemoService;
+    private final ObjectProvider<MyLogger> myLoggerProvider;
+    //private final MyLogger myLogger;
+    @RequestMapping("log-demo")
+    @ResponseBody
+    public String logDemo(HttpServletRequest request) {
+        MyLogger myLogger= myLoggerProvider.getObject();
+        String requestURL = request.getRequestURL().toString();
+
+        myLogger.setRequestURL(requestURL);
+        myLogger.log("controller test");
+        logDemoService.logic("testId");
+        return "OK";
+    }
+}

core/src/main/java/hello/core/web/LogDemoService.java

@@ -0,0 +1,16 @@
+package hello.core.web;
+
+import hello.core.common.MyLogger;
+import lombok.RequiredArgsConstructor;
+import org.springframework.beans.factory.ObjectProvider;
+import org.springframework.stereotype.Service;
+@Service
+@RequiredArgsConstructor
+public class LogDemoService {
+    private final ObjectProvider<MyLogger> myLoggerProvider;
+    public void logic(String id) {
+        MyLogger myLogger= myLoggerProvider.getObject();
+        myLogger.log("service id = " + id);
+    }
+
+}