使用guice在playframework中缓存注释

import java.lang.annotation.ElementType;
import java.lang.annotation.Retention;
import java.lang.annotation.RetentionPolicy;
import java.lang.annotation.Target;

@Target(ElementType.METHOD)
@Retention(RetentionPolicy.RUNTIME)
public @interface Cached {
}

import com.google.inject.AbstractModule;
import com.google.inject.matcher.Matchers;
import play.cache.CacheApi;
import play.cache.DefaultCacheApi;

public class CacheModule extends AbstractModule {
    @Override
    protected void configure() {
        bind(CacheApi.class).to(DefaultCacheApi.class);
        bindInterceptor(Matchers.any(), Matchers.annotatedWith(Cached.class), new CacheInterceptor());
    }
}

import com.google.inject.Inject;
import com.google.inject.Provider;
import org.aopalliance.intercept.MethodInterceptor;
import org.aopalliance.intercept.MethodInvocation;
import play.cache.CacheApi;

public class CacheInterceptor implements MethodInterceptor {
    @Inject
    private Provider<CacheApi> cacheApiProvider;

    @Override
    public Object invoke(MethodInvocation invocation) throws Throwable {
        // 获取缓存的键值
        String cacheKey = generateCacheKey(invocation);

        // 尝试从缓存中读取数据
        Object cachedResult = cacheApiProvider.get().get(cacheKey);

        if (cachedResult != null) {
            // 如果缓存中存在数据，则直接返回缓存结果
            return cachedResult;
        } else {
            // 如果缓存中不存在数据，则执行原始方法，并将结果写入缓存
            Object result = invocation.proceed();
            cacheApiProvider.get().set(cacheKey, result);
            return result;
        }
    }

    private String generateCacheKey(MethodInvocation invocation) {
        // 根据方法的参数和名称生成唯一的缓存键值
        // 可以根据实际需求进行自定义
        // 例如：使用方法名 + 参数值的组合作为缓存键值
        String methodName = invocation.getMethod().getName();
        Object[] arguments = invocation.getArguments();
        return methodName + "_" + Arrays.hashCode(arguments);
    }
}

play.modules.enabled += "com.example.CacheModule"

import play.mvc.Controller;
import play.cache.CacheApi;

public class MyController extends Controller {
    @Cached
    public Result getCachedData(String key) {
        // 从数据库或其他数据源获取数据
        // ...
        return ok(data);
    }
}