diff --git a/par-core/src/main/java/com/par/core/adapter/GroovyScriptEngine.java b/par-core/src/main/java/com/par/core/adapter/GroovyScriptEngine.java
index 27c5768..36353be 100644
--- a/par-core/src/main/java/com/par/core/adapter/GroovyScriptEngine.java
+++ b/par-core/src/main/java/com/par/core/adapter/GroovyScriptEngine.java
@@ -5,6 +5,8 @@ import groovy.lang.Binding;
 import groovy.lang.GroovyClassLoader;
 import groovy.lang.GroovyShell;
 import lombok.extern.slf4j.Slf4j;
+import org.codehaus.groovy.control.CompilerConfiguration;
+import org.codehaus.groovy.control.customizers.ImportCustomizer;
 import org.jsoup.Jsoup;
 import org.springframework.stereotype.Service;
 
@@ -14,14 +16,25 @@ import java.util.*;
  * Groovy 脚本解析引擎。
  * 共享 GroovyClassLoader 避免频繁创建 ClassLoader，每次执行复用同一个。
  * 脚本可访问内置变量：content, url, jsoup, json, utils
+ * 自动导入 Groovy 内置包和 PAR 桩类，使脚本编译通过。
  */
 @Slf4j
 @Service
 public class GroovyScriptEngine {
 
     private static final ObjectMapper objectMapper = new ObjectMapper();
-    /** 全局单例 ClassLoader，避免每次 new GroovyShell 产生新 ClassLoader */
-    private static final GroovyClassLoader classLoader = new GroovyClassLoader();
+    private static final GroovyClassLoader classLoader;
+
+    static {
+        ImportCustomizer imports = new ImportCustomizer();
+        imports.addStarImports("groovy.json");
+        imports.addStarImports("com.par.core.adapter");
+
+        CompilerConfiguration config = new CompilerConfiguration();
+        config.addCompilationCustomizers(imports);
+
+        classLoader = new GroovyClassLoader(Thread.currentThread().getContextClassLoader(), config);
+    }
 
     @SuppressWarnings("unchecked")
     public Map<String, Object> execute(String groovyScript, String content, String url) {
diff --git a/par-core/src/main/java/com/par/core/adapter/PluginContext.java b/par-core/src/main/java/com/par/core/adapter/PluginContext.java
new file mode 100644
index 0000000..4ab1ef1
--- /dev/null
+++ b/par-core/src/main/java/com/par/core/adapter/PluginContext.java
@@ -0,0 +1,16 @@
+package com.par.core.adapter;
+
+/**
+ * PluginContext 桩类，仅供 Groovy 脚本编译通过。
+ * PAR 只调用脚本中的 parse() 方法，不会使用此类。
+ */
+@SuppressWarnings("unused")
+public class PluginContext {
+    public Site site;
+    public Object httpClient;
+
+    public static class Site {
+        public String authorization;
+        public String siteUrl;
+    }
+}