報如下錯誤，提示找不到xsd檔案

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   
 <xsd:schema>. 

然後右鍵update project