jquery uploadify IE9下上传问题!

IE9 下点击上传按钮没响应,能够尝试如下方法解决 方法1: 更新浏览器的flash 插件 方法2:检验代码是严格按照html标准开发,IE9下执行的标准比较严格 方法3:若是是java系统开发的，请检查web.xml是否设置请求安全限制 <security-constraint>    <display-name>myStruts2</display-name>    <web-resource-collection>     <web-resource-name>myStruts2</web-resource-name>     <url-pattern>*.action</url-pattern>     <http-method>HEAD</http-method>     <http-method>TRACE</http-method>     <http-method>DELETE</http-method>     <http-method>OPTIONS</http-method>    </web-resource-collection>       <auth-constraint>     <description>myStruts2</description>     <role-name>tomcat</role-name>    </auth-constraint>       <user-data-constraint>     <transport-guarantee>NONE</transport-guarantee>    </user-data-constraint>     </security-constraint>