feat: 添加启动时自动建表功能

src/main/java/com/example/building/config/DatabaseInitRunner.java

@@ -0,0 +1,68 @@
+package com.example.building.config;
+
+import com.example.building.mapper.*;
+import org.springframework.beans.factory.annotation.Autowired;
+import org.springframework.boot.CommandLineRunner;
+import org.springframework.core.io.ClassPathResource;
+import org.springframework.jdbc.core.JdbcTemplate;
+import org.springframework.stereotype.Component;
+
+import java.io.BufferedReader;
+import java.io.InputStreamReader;
+import java.nio.charset.StandardCharsets;
+import java.util.stream.Collectors;
+
+/**
+ * 数据库初始化组件
+ * 启动时自动执行 SQL 脚本建表
+ */
+@Component
+public class DatabaseInitRunner implements CommandLineRunner {
+
+    @Autowired
+    private JdbcTemplate jdbcTemplate;
+
+    @Override
+    public void run(String... args) throws Exception {
+        try {
+            // 检查表是否存在
+            Integer count = jdbcTemplate.queryForObject(
+                "SELECT COUNT(*) FROM information_schema.tables WHERE table_name = 'users'", 
+                Integer.class
+            );
+            
+            if (count == null || count == 0) {
+                System.out.println("=== 初始化数据库表结构 ===");
+                executeSqlScript("sql/init.sql");
+                System.out.println("=== 数据库初始化完成 ===");
+            }
+        } catch (Exception e) {
+            System.out.println("数据库初始化跳过: " + e.getMessage());
+        }
+    }
+
+    private void executeSqlScript(String scriptPath) {
+        try {
+            ClassPathResource resource = new ClassPathResource(scriptPath);
+            String sql = new BufferedReader(
+                new InputStreamReader(resource.getInputStream(), StandardCharsets.UTF_8)
+            ).lines().collect(Collectors.joining("\n"));
+
+            // 按分号分割执行
+            String[] statements = sql.split(";");
+            for (String stmt : statements) {
+                String trimmed = stmt.trim();
+                if (!trimmed.isEmpty() && !trimmed.startsWith("--")) {
+                    try {
+                        jdbcTemplate.execute(trimmed);
+                    } catch (Exception e) {
+                        // 忽略单个语句错误（如主键重复）
+                        System.out.println("执行SQL跳过: " + e.getMessage());
+                    }
+                }
+            }
+        } catch (Exception e) {
+            System.err.println("执行SQL脚本失败: " + e.getMessage());
+        }
+    }
+}

src/main/resources/application.yml

@@ -37,6 +37,9 @@ mybatis-plus:
       logic-delete-field: status
       logic-delete-value: 0
       logic-not-delete-value: 1
+  # 自动建表
+  mapper-locations: classpath*:/mapper/**/*.xml
+  type-aliases-package: com.example.building.entity
 
 # JWT配置 - 环境变量注入
 jwt: