swagger2.0 parse error！

2021-01-15 18:17:59,823 INFO io.swagger.parser.Swagger20Parser: 90 - reading from http://localhost/v2/api-docs
2021-01-15 18:18:00,285 ERROR io.swagger.parser.util.RemoteUrl: 163 - unable to read
java.io.IOException: Server returned HTTP response code: 400 for URL: http://localhost/AjaxResult«中文字符»/
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.lang.reflect.Constructor.newInstance(Constructor.java:423)
at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1944)
at sun.net.www.protocol.http.HttpURLConnection$10.run(HttpURLConnection.java:1939)
at java.security.AccessController.doPrivileged(Native Method)
at sun.net.www.protocol.http.HttpURLConnection.getChainedException(HttpURLConnection.java:1938)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream0(HttpURLConnection.java:1508)
at sun.net.www.protocol.http.HttpURLConnection.getInputStream(HttpURLConnection.java:1492)
at io.swagger.parser.util.RemoteUrl.urlToString(RemoteUrl.java:138)
at io.swagger.parser.util.RefUtils.readExternalRef(RefUtils.java:135)
at io.swagger.parser.util.RefUtils.readExternalUrlRef(RefUtils.java:70)
at io.swagger.parser.ResolverCache.loadRef(ResolverCache.java:122)
at io.swagger.parser.processors.ExternalRefProcessor.processRefToExternalDefinition(ExternalRefProcessor.java:49)
at io.swagger.parser.processors.ModelProcessor.processRefModel(ModelProcessor.java:95)
at io.swagger.parser.processors.ModelProcessor.processModel(ModelProcessor.java:34)
at io.swagger.parser.processors.ResponseProcessor.processResponse(ResponseProcessor.java:34)
at io.swagger.parser.processors.OperationProcessor.processOperation(OperationProcessor.java:47)
at io.swagger.parser.processors.PathsProcessor.processPaths(PathsProcessor.java:103)
at io.swagger.parser.SwaggerResolver.resolve(SwaggerResolver.java:66)
at io.swagger.parser.SwaggerParser.read(SwaggerParser.java:81)
at io.swagger.parser.SwaggerParser.read(SwaggerParser.java:66)
at io.swagger.parser.SwaggerParser.read(SwaggerParser.java:60)

Start at Swagger20Parser.read and follow the stack through RemoteUrl.urlToString and RefUtils.readExternalUrlRef while resolving the external reference from http://localhost/v2/api-docs. Reproduce the HTTP 400 response for the URL containing Chinese characters; done means the Swagger 2.0 document parses without this failure.