初始提交，未完全测试

template/ext/directive/StringDirective.py

@@ -0,0 +1,33 @@
+#!/usr/bin/env python3.9
+# -*- coding: utf-8 -*-
+"""
+JFinal StringDirective - String Directive
+"""
+
+from ...Directive import Directive
+from ...Env import Env
+from ...stat.Scope import Scope
+
+class StringDirective(Directive):
+    """String directive for string operations"""
+    
+    def exec(self, env: Env, scope: Scope, writer) -> None:
+        """
+        Execute string directive
+        
+        Args:
+            env: Template environment
+            scope: Execution scope
+            writer: Output writer
+        """
+        if self.expr_list:
+            # Get string value
+            string_value = self.expr_list.eval(scope)
+            
+            if string_value is not None:
+                # Output string
+                if hasattr(writer, 'write'):
+                    writer.write(str(string_value))
+    
+    def __repr__(self) -> str:
+        return "StringDirective()"