[spring]spring框架的编码过滤器的使用

错误现象：

页面使用ajax验证出现返回的响应为乱码“？？？？？？”。

错误原因：

没有正确使用spring框架的编码过滤器。

<!-- 定义编码过滤器 -->   
    <filter>
        <filter-name>encodingFilter</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>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>

解决办法：

http://static.springsource.org/spring/docs/3.0.x/api/org/springframework/web/filter/CharacterEncodingFilter.html

<!-- 定义编码过滤器 -->   
    <filter>
        <filter-name>encodingFilter</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>encodingFilter</filter-name>
        <url-pattern>/*</url-pattern>
    </filter-mapping>