feat: 四类站点默认脚本+无自定义脚本时按siteType自动加载默认模板

par-core/src/main/java/com/par/core/adapter/GroovyScriptEngine.java

@@ -23,11 +23,40 @@ public class GroovyScriptEngine {
     private static final ObjectMapper objectMapper = new ObjectMapper();
     private static final GroovyClassLoader classLoader = new GroovyClassLoader(
             Thread.currentThread().getContextClassLoader());
+    /** 类型 → 默认脚本 */
+    private static final Map<String, String> DEFAULT_SCRIPTS = new ConcurrentHashMap<>();
     /** 脚本前缀：自动导入必要包 + PluginContext 桩 */
     private static final String SCRIPT_PREFIX =
             "import groovy.json.*\n" +
             "import com.par.core.adapter.*\n";
 
+    /**
+     * 根据站点 ID 加载默认脚本（按站点类型匹配）
+     */
+    public String loadDefaultScript(String siteId) {
+        // 需要从外部注入 siteMapper，这里用静态方法获取 Spring Bean
+        // 实际由 AdapterController 调用时传入
+        return null; // placeholder, 由 AdapterController 实现具体逻辑
+    }
+
+    /**
+     * 从 classpath 加载默认脚本文件
+     */
+    public static String loadDefaultByType(String siteType) {
+        if (siteType == null) return null;
+        String key = siteType.toLowerCase();
+        return DEFAULT_SCRIPTS.computeIfAbsent(key, k -> {
+            String path = "scripts/default-" + k + ".groovy";
+            try (var in = GroovyScriptEngine.class.getClassLoader().getResourceAsStream(path)) {
+                if (in == null) return null;
+                return new String(in.readAllBytes(), java.nio.charset.StandardCharsets.UTF_8);
+            } catch (Exception e) {
+                log.warn("Failed to load default script for type: {}", k, e);
+                return null;
+            }
+        });
+    }
+
     @SuppressWarnings("unchecked")
     public Map<String, Object> execute(String groovyScript, String content, String url) {
         Map<String, Object> result = new LinkedHashMap<>();