防止SQL流入dbq

防止SQL注入dbq
web.xml

<filter>        <filter-name>StringFilter</filter-name>        <filter-class>             com.sqlSecurity.SqlSecurity        </filter-class>            </filter>    <filter-mapping>        <filter-name>StringFilter</filter-name>        <url-pattern>/*</url-pattern>    </filter-mapping>