小问题？

Question

写一个web.xml中配置一个filter
    <filter>
        <filter-name>SetEncoding</filter-name>
        <filter-class>com.util.SetEncodeFilter</filter-class>
        <init-param>
            <param-name>defaultencoding</param-name>
            <param-value>UTF-8</param-value>            
        </init-param>        
    </filter>
    <filter-mapping>
        <filter-name>SetEncoding</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>com.util.SetEncodeFilter类中 public void doFilter(
ServletRequest request,
ServletResponse response,
FilterChain chain)
throws IOException, ServletException {
request.setCharacterEncoding("得到的参数");
}

Answer 1

这个web.xml写完后放在哪个目录底下？

Answer 2

web.xml當然是放在WEB-INF文件夾下拉

Answer 3

请教，是不是还要建一个SetEncodeFilter类，这个类应该放在哪里？