完成部分帖子相关功能，同时完善了一些用户功能
Change-Id: Ie9d22bcceec197930d48f578d8b9a749ce7a3382
diff --git a/src/main/java/com/pt/service/PostService.java b/src/main/java/com/pt/service/PostService.java
new file mode 100644
index 0000000..f1ab50e
--- /dev/null
+++ b/src/main/java/com/pt/service/PostService.java
@@ -0,0 +1,50 @@
+package com.pt.service;
+
+import com.pt.entity.Post;
+import com.pt.repository.PostRepository;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.stereotype.Service;
+
+import java.time.LocalDate;
+import java.util.List;
+
+@Service
+public class PostService {
+
+ @Autowired
+ private PostRepository postRepository;
+
+ public void createPost(String title, String content, String author) {
+ System.out.println("Post created with title: " + title);
+ postRepository.save(new Post(title, content, author));
+ }
+
+ public Post findPostByTitle(String title) {
+ return postRepository.findByTitle(title);
+ }
+
+ public List<Post> listByAuthor(String author) {
+ return postRepository.listByAuthor(author);
+ }
+
+ public List<Post> listByTitle(String title) {
+ return postRepository.listByTitle(title);
+ }
+
+ public List<Post> listByDate(String date) {
+ LocalDate nDate = LocalDate.parse(date);
+ return postRepository.listByDate(nDate);
+ }
+
+ public List<Post> listAll() {
+ return postRepository.findAll();
+ }
+
+ public void deletePost(Post p) {
+ postRepository.delete(p);
+ }
+
+ public Post findPostById(int id) {
+ return postRepository.findById(id).orElse(null);
+ }
+}