Document root element "beans" must match DOCTYPE root "null"

Document root element "beans", must match DOCTYPE root "null".
在往Spring2.0项目中添加XFire时（Myeclipse）出现如下错误
Document root element "beans", must match DOCTYPE root "null".
原因：XFire Core lib 中有Spring1.2.6 与Spring 2 冲突！
解决办法：XFire Core lib 中有Spring1.2.6 与Spring 2 冲突！删掉Spring1.2.6的jar包就好了~