BlogService i dependency injection

PC26-Spring/src/main/java/com/example/demo/BlogController.java

 package com.example.demo;
 
-import java.util.ArrayList;
-import java.util.List;
-
+import org.springframework.beans.factory.annotation.Autowired;
 import org.springframework.stereotype.Controller;
 import org.springframework.ui.Model;
 import org.springframework.web.bind.annotation.GetMapping;
@@ -12,7 +10,8 @@ import org.springframework.web.bind.annotation.RequestMapping;
 @Controller
 @RequestMapping("/blog")
 public class BlogController {
-	private List<String> teksty = new ArrayList<>();
+	@Autowired
+	private BlogService blogService;
 	
 	@GetMapping
 	public String rozmowaGet() {
@@ -22,9 +21,9 @@ public class BlogController {
 	@PostMapping
 	public String rozmowaPost(String tekst, Model model) {
 		if(tekst != null && !tekst.isBlank()) {
-			teksty.add(tekst);
+			blogService.addTekst(tekst);
 		}
-		model.addAttribute("teksty", teksty);
+		model.addAttribute("teksty", blogService.getTeksty());
 		return "blog.html";
 	}
 	

PC26-Spring/src/main/java/com/example/demo/BlogRestController.java

+package com.example.demo;
+
+import java.util.List;
+
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RestController;
+
+@RestController
+@RequestMapping("/blog.json")
+public class BlogRestController {
+	@Autowired
+	private BlogService blogService;
+	
+	@GetMapping
+	public List<String> getTeksty() {
+		return blogService.getTeksty();
+	}
+
+}

PC26-Spring/src/main/java/com/example/demo/BlogService.java

+package com.example.demo;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+import org.springframework.stereotype.Component;
+
+@Component
+public class BlogService {
+	private List<String> teksty = Collections.synchronizedList(new ArrayList<>());
+	
+	public List<String> getTeksty() {
+		return Collections.unmodifiableList(teksty);
+	}
+	
+	public void addTekst(String tekst) {
+		teksty.add(tekst);
+	}
+}