Neither PathPatterns nor String patterns condition

RequestMappingInfo.paths(prefix).build().combine(mappingInfo);
给请求增加前缀，报错Neither PathPatterns nor String patterns condition

pathPatternsCondition 为null，正常应该是前缀，那么跟踪下初始化的地方。

this.options.patternParser 不能为空。
解决办法：

public class xxxRequestMappingHandlerMapping extends RequestMappingHandlerMapping {
    private RequestMappingInfo.BuilderConfiguration config = new RequestMappingInfo.BuilderConfiguration();
}
public xxxMethod(){
RequestMappingInfo info = super.getMappingForMethod(method, handlerType);
// ...
    if (this.config.getPatternParser() == null) {
        this.config.setPatternParser(patternParser);
    }
   info = RequestMappingInfo.paths(prefix)
      .options(this.config)
      .build()
	  .combine(info);
}
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代码：SpringBoot给Controller添加统一路由前缀