web开发实践中遇到的问题--spring mvc中文乱码

jsp页面中文输入，到controller乱码，这时候需要设置的是在web.xml文件中添加一个编码的过滤器（filter）将编码统一为UTF-8。代码：

<!-- jsp提交中文表单，controller中解决中文乱码问题-->
    <filter>
        <filter-name>characterEncodingFilter</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>
        <init-param>
            <param-name>forceEncoding</param-name>
            <param-value>true</param-value>
        </init-param>
    </filter>
    <filter-mapping>
        <filter-name>characterEncodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>