002字符编码过滤器+传参+跳转方式+视图解析器[email protected]+JSP九大内置对象和四大作用域复习+SpringMVC作用域传值的几种方式

一.字符编码过滤器

在web.xml中配置Filter。

    <!-- 字符编码过滤器 -->
    <filter>
        <filter-name>encoding</filter-name>
        <filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
        <init-param>
            <param-name>encoding</param-name>
            <param-value>utf-8</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>encoding</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>