feat: 初始化 SpringBoot + 前端全栈博客项目

backend/src/main/java/com/example/blog/BlogApplication.java

@@ -0,0 +1,41 @@
+package com.example.blog;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+import org.springframework.web.bind.annotation.*;
+import java.util.*;
+
+@SpringBootApplication
+@RestController
+@CrossOrigin(origins = "*")
+@RequestMapping("/api/posts")
+public class BlogApplication {
+
+    private static final List<Map<String, String>> posts = new ArrayList<>();
+
+    static {
+        Map<String, String> p1 = new HashMap<>();
+        p1.put("id", "1");
+        p1.put("title", "Hello World! 我的第一篇云端博客");
+        p1.put("content", "这是运行在 Google Cloud 台湾节点上的 Spring Boot 3.x 容器！");
+        p1.put("author", "旺总");
+        p1.put("date", "2026-10-22");
+        posts.add(p1);
+    }
+
+    @GetMapping
+    public List<Map<String, String>> getPosts() {
+        return posts;
+    }
+
+    @PostMapping
+    public Map<String, String> addPost(@RequestBody Map<String, String> post) {
+        post.put("id", String.valueOf(posts.size() + 1));
+        posts.add(0, post);
+        return post;
+    }
+
+    public static void main(String[] args) {
+        SpringApplication.run(BlogApplication.class, args);
+    }
+}