21.16.11 路径匹配

    <mvc:annotation-driven>
        <mvc:path-matching
            suffix-pattern="true"
            registered-suffixes-only="true"
            path-helper="pathHelper"
            path-matcher="pathMatcher"/>
    <bean id="pathHelper" class="org.example.app.MyPathHelper"/>
    <bean id="pathMatcher" class="org.example.app.MyPathMatcher"/>