cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration.

cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'flex:message-broker'.

cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element 'flex:remoting-destination'.

1、将org.springframework.flex-1.0.1.RELEASE.jar拷贝到项目的lib目录下；
2、选择elcipse的window-->preferences，弹出相应对话框；
3、在对话框的的type filter text位置数据 xml c，您将看到XML Catalog，点击进入；
4、选择User Specified Entries，单击添加，然后， 在弹出的对话框相应位置填入
Location: abm/WebRoot/WEB-INF/lib/org.springframework.flex-1.0.1.RELEASE.jar!/org/springframework/flex/config/xml/spring-flex-1.0.xsd
Key Type: Schema Location
Key: http://www.springframework.org/schema/flex
5、重复4操作，相应位置填入
Location: abm/WebRoot/WEB-INF/lib/org.springframework.flex-1.0.1.RELEASE.jar!/org/springframework/flex/config/xml/spring-flex-1.0.xsd
Key Type: Schema Location
Key: http://www.springframework.org/schema/flex/spring-flex-1.0.xsd

至此，便可解决。
注：abm是我的工程名，您需要做相应的改动！