liuguangrong opened a new issue #2258:
URL: https://github.com/apache/servicecomb-java-chassis/issues/2258
需要做一个页面访问后台，后台将二进制图片返回到页面展示，发现不能使用response，那么请问有什么办法能将图片写出去呢？
Caused by:
org.apache.servicecomb.foundation.common.exceptions.ServiceCombException:
[simple type, class java.util.function.Supplier] is interface. Must be a
concrete type.
at
org.apache.servicecomb.swagger.extend.ModelResolverExt.checkType(ModelResolverExt.java:128)
at
org.apache.servicecomb.swagger.extend.ModelResolverExt.resolve(ModelResolverExt.java:148)
at io.swagger.jackson.ModelResolver.resolve(ModelResolver.java:203)
at
io.swagger.converter.ModelConverterContextImpl.resolve(ModelConverterContextImpl.java:103)
at io.swagger.converter.ModelConverters.readAll(ModelConverters.java:98)
at io.swagger.converter.ModelConverters.readAll(ModelConverters.java:88)
at
org.apache.servicecomb.swagger.SwaggerUtils.addDefinitions(SwaggerUtils.java:208)
at
org.apache.servicecomb.swagger.SwaggerUtils.setParameterType(SwaggerUtils.java:222)
at
org.apache.servicecomb.swagger.generator.springmvc.SpringmvcOperationGenerator.lambda$initMethodParameterGenerators$1(SpringmvcOperationGenerator.java:47)
at
java.util.stream.ForEachOps$ForEachOp$OfRef.accept(ForEachOps.java:183)
at
java.util.stream.ReferencePipeline$2$1.accept(ReferencePipeline.java:175)
at
java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1382)
at java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:482)
at
java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:472)
at
java.util.stream.ForEachOps$ForEachOp.evaluateSequential(ForEachOps.java:150)
at
java.util.stream.ForEachOps$ForEachOp$OfRef.evaluateSequential(ForEachOps.java:173)
at java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
at
java.util.stream.ReferencePipeline.forEach(ReferencePipeline.java:485)
at
org.apache.servicecomb.swagger.generator.springmvc.SpringmvcOperationGenerator.initMethodParameterGenerators(SpringmvcOperationGenerator.java:44)
at
org.apache.servicecomb.swagger.generator.core.AbstractOperationGenerator.initParameterGenerators(AbstractOperationGenerator.java:213)
at
org.apache.servicecomb.swagger.generator.core.AbstractOperationGenerator.scanMethodParameters(AbstractOperationGenerator.java:193)
at
org.apache.servicecomb.swagger.generator.core.AbstractOperationGenerator.generate(AbstractOperationGenerator.java:154)
at
org.apache.servicecomb.swagger.generator.core.AbstractSwaggerGenerator.scanMethods(AbstractSwaggerGenerator.java:297)
... 18 more
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