Add user, post 게시판 기능 추가

src/main/java/com/example/springsecuritystudy/post/PostController.java

@@ -0,0 +1,42 @@
+package com.example.springsecuritystudy.post;
+
+import java.security.Principal;
+import java.util.List;
+
+import org.springframework.stereotype.Controller;
+import org.springframework.ui.Model;
+import org.springframework.web.bind.annotation.DeleteMapping;
+import org.springframework.web.bind.annotation.GetMapping;
+import org.springframework.web.bind.annotation.ModelAttribute;
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestMapping;
+import org.springframework.web.bind.annotation.RequestParam;
+
+import lombok.RequiredArgsConstructor;
+
+@Controller
+@RequiredArgsConstructor
+@RequestMapping("/post")
+public class PostController {
+
+	private final PostService postService;
+
+	@GetMapping
+	public String findByPost(Principal principal, Model model) {
+		List<Post> posts = postService.findByUserName(principal.getName());
+		model.addAttribute("posts", posts);
+		return "post/index";
+	}
+
+	@PostMapping
+	public String savePost(@ModelAttribute PostDto postDto, Principal principal) {
+		postService.savePost(principal.getName(), postDto.getTitle(), postDto.getContent());
+ 		return "redirect:post";
+	}
+
+	@DeleteMapping
+	public String deletePost(@RequestParam Long id, Principal principal) {
+		postService.deletePost(principal.getName(), id);
+		return "redirect:post";
+	}
+}