A much better idea is to place all your business logic into a controller servlet.
更好的办法是将所有业务逻辑放在一个控制器servlet (controller servlet)中。
Consider Listing 6, which illustrates a normal portion of code from a controller servlet.
考虑清单6，它展示了一个控制器servlet中普通的一段代码。
JSF USES it to configure the JSF controller servlet and Seam USES it intercept all web requests.
JSF用它来配置JSF servlet控制器，Seam用它来拦截所有的web请求。
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