Multiple annotations found at this line: - cvc-complex-type.2.4.c: The matching wildcard is strict,

springmvc.xml文件报错如下：
错误：
Multiple annotations found at this line:

• cvc-complex-type.2.4.c: The matching wildcard is strict, but no declaration can be found for element ‘dubbo:application’.
• schema_reference.4: Failed to read schema document ‘http://code.alibabatech.com/schema/dubbo/dubbo.xsd’,
  because 1) could not find the document; 2) the document could not be read; 3) the root element of the document is not
  是因为没有引入相应的约束文件，引入就不会报错了。
  离线约束文件的下载地址是
  http://code.alibabatech.com/schema/dubbo/dubbo.xsd
  这个地址后面在eclipse里面配置时也会用，复制一下就好。把他下下来后放在一个全英文的路径下，目录文件下统统不要含中文和空格一类的字符。
  点add按钮
  
  点OK就可以了，报错就解决了。假如还是报错，右击你的项目，选maven选update project就可以了。