Fileter的创建
使用fileter进行编码

1：后台java代码：

  <!-- 字符编码过滤 --><filter><filter-name>SetCharacterEncodingFilter</filter-name><filter-class>com。。。.SetCharacterEncodingFilter</filter-class><init-param><param-name>encoding</param-name><param-value>UTF-8</param-value></init-param><init-param><param-name>ignore</param-name><param-value>false</param-value></init-param><filter-mapping><filter-name>SetCharacterEncodingFilter</filter-name><url-pattern>/jsp/*</url-pattern></filter-mapping><filter-mapping><filter-name>SetCharacterEncodingFilter</filter-name><url-pattern>*.do</url-pattern></filter-mapping>