重构项目

enjoy/__init__.py

@@ -0,0 +1,161 @@
+import jpype
+import os
+from typing import Dict, Any, Optional
+
+class Enjoy:
+    """
+    适配JFinal Enjoy 5.2.2模板引擎的Python调用类
+    核心类：com.jfinal.template.Engine
+    实现：mrzhou@miw.cn
+    """
+    _instance: Optional['Enjoy'] = None
+    _jvm_started: bool = False
+    _engine: Optional[Any] = None  # 保存JFinal Engine实例
+
+    def __new__(cls, jar_path: str = None, template_base_path: str = "./"):
+        """单例模式：全局唯一Engine实例"""
+        if cls._instance is None:
+            cls._instance = super().__new__(cls)
+            # 如果未提供jar_path，使用项目内置的enjoy-5.2.2.jar
+            if jar_path is None:
+                # 获取当前文件所在目录，然后拼接jar文件名
+                current_dir = os.path.dirname(os.path.abspath(__file__))
+                cls._instance.jar_path = os.path.join(current_dir, "enjoy-5.2.2.jar")
+            else:
+                cls._instance.jar_path = os.path.abspath(jar_path)
+            cls._instance.template_base_path = os.path.abspath(template_base_path)
+            cls._instance._init_jvm()
+            cls._instance._init_engine()  # 初始化JFinal Engine
+        return cls._instance
+
+    def _init_jvm(self):
+        """启动JVM并加载enjoy-5.2.2.jar"""
+        if not self._jvm_started:
+            try:
+                # 使用JPype1的自动类路径管理，让JPype1自己处理其支持库
+                jpype.startJVM(
+                    "-ea",
+                    f"-Djava.class.path={self.jar_path}",
+                    "-Dfile.encoding=UTF-8",
+                    convertStrings=False
+                )
+                self._jvm_started = True
+                print(f"JVM启动成功 | 工作目录: {jpype.java.lang.System.getProperty('user.dir')}")
+            except Exception as e:
+                raise RuntimeError(f"JVM启动失败: {e}") from e
+
+    def _init_engine(self):
+        """初始化JFinal Engine实例（核心）"""
+        try:
+            # 加载JFinal Engine类
+            Engine = jpype.JClass("com.jfinal.template.Engine")
+            # 获取默认Engine实例（JFinal推荐单例使用）
+            self._engine = Engine.use()
+            # 配置模板基础路径（关键：指定模板文件所在目录）
+            self._engine.setBaseTemplatePath(self.template_base_path)
+            # 可选配置：设置编码、开启热加载等
+            self._engine.setEncoding("UTF-8")
+            self._engine.setDevMode(True)  # 开发模式，便于调试
+            print(f"Engine初始化成功 | 模板基础路径: {self.template_base_path}")
+        except jpype.JException as e:
+            e.printStackTrace()
+            raise RuntimeError(f"Engine初始化失败: {e.getMessage()}") from e
+
+    def _convert_python_to_java(self, obj: Any) -> Any:
+        """转换Python数据为Java Map（适配Enjoy模板数据格式）"""
+        if isinstance(obj, dict):
+            # 优先使用JFinal的Map（也可用java.util.HashMap）
+            HashMap = jpype.JClass("java.util.HashMap")
+            java_map = HashMap()
+            for key, value in obj.items():
+                # 递归转换嵌套数据
+                if isinstance(value, (dict, list)):
+                    java_map.put(key, self._convert_python_to_java(value))
+                else:
+                    java_map.put(key, value)
+            return java_map
+        elif isinstance(obj, list):
+            return jpype.JArray(jpype.JObject)([self._convert_python_to_java(x) for x in obj])
+        else:
+            return obj
+
+    def render(self, tempStr: str, data: Dict[str, Any]) -> str:
+        """
+        渲染Enjoy模板（核心方法）
+        :param tempStr: 模板文件名（相对于baseTemplatePath的路径，如index.html）
+        :param data: 模板渲染数据（Python字典）
+        :return: 渲染后的字符串
+        """
+        if not self._engine:
+            raise RuntimeError("Engine未初始化，请检查Jar包路径")
+
+        try:
+            # 1. 转换Python字典为Java Map
+            java_data = self._convert_python_to_java(data)
+            # 2. 获取Template实例（Engine.getTemplate）
+            template = self._engine.getTemplate(tempStr)
+            # 3. 渲染模板：使用Writer接收结果
+            StringWriter = jpype.JClass("java.io.StringWriter")
+            writer = StringWriter()
+            template.render(java_data, writer)
+            # 4. 转换为Python字符串
+            result = writer.toString()
+            writer.close()
+            return result
+
+        except jpype.JException as e:
+            print("\n=== JFinal Enjoy异常详情 ===")
+            e.printStackTrace()
+            raise RuntimeError(f"模板渲染失败: {e.getMessage()}") from e
+        except Exception as e:
+            raise RuntimeError(f"调用失败: {e}") from e
+
+    def close(self):
+        """关闭JVM，释放资源"""
+        if self._jvm_started:
+            jpype.shutdownJVM()
+            self._jvm_started = False
+            self._engine = None
+            self.__class__._instance = None
+            print("JVM已关闭")
+
+    def __del__(self):
+        """析构函数：自动关闭"""
+        self.close()
+
+# ------------------------------
+# 标准调用示例（适配enjoy-5.2.2.jar）
+# ------------------------------
+if __name__ == "__main__":
+    # 1. 配置参数（仅需配置模板路径，jar文件自动使用内置版本）
+    TEMPLATE_BASE_PATH = "./templates"  # 模板文件所在目录（如index.html放在这个目录下）
+
+    # 2. 创建Enjoy实例（初始化Engine，自动使用内置的enjoy-5.2.2.jar）
+    try:
+        enjoy = Enjoy(
+            template_base_path=TEMPLATE_BASE_PATH
+        )
+
+        # 3. 准备模板参数
+        render_data = {
+            "name": "JFinal Enjoy 5.2.2测试",
+            "hobbies": ["Python调用Java", "模板渲染", "跨语言开发"],
+            "user": {"age": 25, "gender": "男"}
+        }
+
+        # 4. 渲染模板（tempStr是模板文件名，相对于TEMPLATE_BASE_PATH）
+        result = enjoy.render(
+            tempStr="index.html",  # 模板文件：./templates/index.html
+            data=render_data       # 渲染数据（Python字典）
+        )
+
+        # 5. 输出结果
+        print("\n=== 模板渲染结果 ===")
+        print(result)
+
+    except RuntimeError as e:
+        print(f"\n执行失败: {e}")
+    finally:
+        # 6. 关闭资源
+        if 'enjoy' in locals():
+            enjoy.close()

enjoy/templates/index.html

@@ -0,0 +1,29 @@
+<!DOCTYPE html>
+<html lang="en">
+<head>
+    <meta charset="UTF-8">
+    <meta name="viewport" content="width=device-width, initial-scale=1.0">
+    <title>Document</title>
+</head>
+<body>
+
+
+#(name)
+
+<hr>
+#for(i : hobbies)
+    #(i)
+#end
+
+<hr>
+#for(i : scores)
+    #(i)
+#end
+
+<hr>
+#for(i : user)
+    #(i.key)   #(i.value)
+#end
+
+</body>
+</html>