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主要就是两类题型：filter过滤器顺序判断、html结合java方法判断输出
题型一、filter过滤器顺序判断（去年考过）
方法：（我给出一种玄学方法，仅适用于复习时间不够、看不懂代码的同学^_^，能看懂代码的同 学，考试自己好好做）
我们来看下面这道题：
例一、文中有两段Filter.java代码，一段Servlet.java代码，一段xml代码
注：Filter的执行顺序和Filter在web.xml文件中的位置先后无关，只和mapping的顺序有关，谁的mapping在前，就先执行谁
解题步骤：
（1）找出Filter.java中的doFilter语句和chain语句、xml中<filter-mapping></filter-mapping>标签下的MyFilter1、MyFilter2,即文中的红色部分
（2）找出位于chain语句上一行和下一行的输出语句（有可能为空）、Servlet.java中的输出语句，即蓝色部分
（3）我们看到xml中<filter-mapping></filter-mapping>标签下的MyFilter，2在前1在后，于是我们按这样的顺序写出答案：
MyFilter2.java中的chain上一行的输出语句
——>MyFilter1.java中的chain上一行的输出语句
——>Servlet.java中的输出语句
——>MyFilter1.java中的chain下一行的输出语句
——>MyFilter2.java中的chain下一行的输出语句
（若我们看到xml中<filter-mapping></filter-mapping>标签下的MyFilter，1在前2在后，则我们按这样的顺序写出
答案：
MyFilter1.java中的chain上一行的输出语句
——>MyFilter2.java中的chain上一行的输出语句
——>Servlet.java中的输出语句
——>MyFilter2.java中的chain下一行的输出语句
——>MyFilter1.java中的chain下一行的输出语句）
题型二、html结合java方法判断输出
此类题型一般难度不大，我们只需要从代码中找出所有的输出语句，然后根据html代码中的信息，将输出语句中的变量，赋值后再输出即可，让我们来看以下例题
例一：
注意：赋值时要根据<context></context> 标签中的语句赋值
例二：
答：
pageScope中user的值为：itcast
requestScope中book的值为：Java
sessionScope中user的值为：it
apploicationScope中book的值为：database
