探索Apache Sling的魔力：高效集成Tomcat EL API

import org.apache.sling.scripting.sightly.impl.engine.ELContextBuilder;
import org.apache.sling.scripting.sightly.impl.engine.ELManager;
import org.apache.sling.scripting.sightly.impl.engine.SightlyEngine;
import org.apache.sling.scripting.sightly.impl.compiler.SightlyCompiler;
import javax.script.Bindings;
import javax.script.ScriptContext;
import javax.script.SimpleBindings;
import java.util.Collections;
import java.util.HashMap;
import java.util.Map;

// 假设 `sightlyEngine` 是已经配置好的 Sightly 引擎实例
SightlyEngine sightlyEngine = ...;

// 创建一个新的 ELContextBuilder 实例
ELContextBuilder elContextBuilder = new ELContextBuilder();

// 设置 EL 管理器
elContextBuilder.withELManager(new ELManager());

// 设置编译器
elContextBuilder.withCompiler(new SightlyCompiler());

// 设置脚本上下文
elContextBuilder.withScriptContext(new MockScriptContext());

// 构建 EL 上下文
ELContext elContext = elContextBuilder.build();

// 使用 Sightly 引擎渲染模板
String result = sightlyEngine.render("templatePath", elContext);

// 输出渲染结果
System.out.println(result);

// 模拟的 ScriptContext 类
class MockScriptContext implements ScriptContext {
    @Override
    public Bindings getBindings(int scope) {
        return new SimpleBindings();
    }

    @Override
    public void setBindings(Bindings bindings, int scope) {
        // 实现细节
    }

    @Override
    public Object getAttribute(String name, int scope) {
        return null;
    }

    @Override
    public void setAttribute(String name, Object value, int scope) {
        // 实现细节
    }

    @Override
    public void removeAttribute(String name, int scope) {
        // 实现细节
    }

    @Override
    public Object getAttribute(String name) {
        return null;
    }

    @Override
    public void setAttribute(String name, Object value) {
        // 实现细节
    }

    @Override
    public void removeAttribute(String name) {
        // 实现细节
    }

    @Override
    public int getScopes() {
        return 0;
    }

    @Override
    public Bindings getBindings() {
        return new SimpleBindings();
    }

    @Override
    public void setBindings(Bindings bindings) {
        // 实现细节
    }
}