通过修改这个advice以缩进方式显示嵌套的方法调用，并且打印传递和返回的值，我将改进这一不足。
I'm going to fix this shortcoming by changing my advice to show method call nesting by indentation, and also to print the values being passed and returned.
我将构建一个简单的计算器应用程序，逐步改进它的外观和感觉，修改它的结构来添加依赖性注入，以及实现JSF的导航机制。
You build a simple calculator application and, in subsequent iterations, improve its look and feel, modify its structure to add dependency injection, and implement JSF's navigation mechanism.
深入讨论缓存技术不在本文讨论范围内，但是我将简要讨论缓存技术，让您了解可以改进脚本的方法。
An in-depth discussion of caching techniques is beyond the scope of this article, but I will discuss them briefly to give you an idea of how the script can be improved.
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