ErrLookup › OpenFeign/feign
OpenFeign/feign
Feign makes writing java http clients easier · Java · 302 source files
Analyzed at e2a1e27560 on 2026-09-10. 101 documented errors.
| Code / Message | Type | Severity | Tags |
|---|---|---|---|
| Method " " should not be called | exception | error | |
| exception attempting to instantiate | exception | error | reflection, instantiation, java, decoder, sax |
| ${e.getMessage()} | exception | error | |
| SOAP only supports decoding raw types. Found | exception | error | soap, jaxb, generics, decoder, unsupported-operation |
| Writing file's ' ' content error | exception | error | feign, multipart, file-io, encoder |
| Cannot generate exception - check constructor parameter… | exception | error | java, feign, reflection, constructor |
| expression is too long. Max length | exception | error | feign, uri-template, template-expression, limit-exceeded |
| Default method handler invoked before proxy has been bound. | exception | error | |
| Invalid status( ) executing | http | error | |
| Unable to decode response ( ) ... | exception | error | feign, decoding, content-type, configuration |
| Expected: , but was | exception | error | mock, test, sequential, request-mismatch |
| reading (response body) | exception | error | http, response, decode, error-decoder |
| ${e.toString()} | exception | error | jaxb, decode, xml-parsing |
| Value does not match the expression pattern | exception | error | feign, uri-template, regex, pattern-mismatch |
| Method return type is not CompleteableFuture | validation | error | |
| Method of contract doesn't returns io.vertx.core.Future | exception | error | vertx, contract, validation, generics |
| RequestLine annotation didn't start with an HTTP verb on… | validation | error | |
| is not a method handled by feign | exception | error | |
| end of MethodInterceptor chain | exception | error | java, feign, aop, interceptor-chain |
| Expected only one contained type. | exception | error | reactive, generics, contract-validation |
| Could not add file handler. | exception | error | |
| Method \" \" should not be called | exception | error | proxy, invocation-handler, reflective-call |
| Method of contract doesn't returns a… | exception | error | reactive, contract-validation, return-type |
| Status Code [ ] has already been declared to throw [ ] and… | exception | error | java, feign, configuration, duplicate-status-code |
| Throwable error from subscription stream rethrown as… | exception | error | graphql, subscription, reactive-streams, iterator |
| reading | exception | error | io, response-body, network, decode |
| Unable to enrich field | exception | error | java, feign, reflection, capability |
| Return type is not supported | exception | error | reactive, reactor, return-type |
| Method return type is not parameterized | validation | error | java, reflection, generics, feign-client |
| SOAP only supports encoding raw types. Found | exception | error | soap, jaxb, generics, encoder, unsupported-operation |
SERVER_THROTTLED SERVER_THROTTLED | error_code | error | ribbon, load-balancer, throttling, retry |
| Multipart body could not be read. | exception | error | spring, multipart, http-message-conversion, request-body |
| Invalid uri | exception | error | java11, httpclient, url, feign |
| Mark not set | exception | error | io, stream, mark-reset |
| Method can't have continuation argument, only kotlin method… | exception | error | kotlin, coroutines, suspend, feign, illegal-argument |
| name is required. | exception | error | feign, header-template, missing-name, argument-validation |
| Unable to encode ( ) ... | exception | error | feign, encoding, request-body, configuration |
| Options should be provided directly during construction of… | exception | error | vertx, configuration, unsupported-operation, options, timeout |
| Wanted: ' ' but never invoked! Got | exception | error | mock, test, verification, never-invoked |
| Constructor does not exist | exception | error | java, feign, reflection, class-not-found |
| Streaming Decoding is not supported. | exception | error | reactive, unsupported-operation, builder |
| Unable to gzip request body | exception | error | gzip, request-body, http-client, io |
| More executions were expected | exception | error | mock, test, sequential, unused-stub |
| ensure has a no-args constructor | exception | error | sax, reflection, decoder, constructor |
| Cannot convert to type | exception | error | jackson-jr, encoder, type-mismatch, serialization |
| URL ' ' couldn't be parsed into a URI | exception | error | url, uri-syntax, http-client, encoding |
| Failure encoding object into query map | exception | error | java, feign, reflection, encoding, query-map |
| Cannot access constructor | exception | error | java, feign, reflection, access-modifier |
| JAXB only supports decoding raw types. Found | exception | error | jaxb, xml, generics, feign, decoder |
| Unable to enrich | exception | error | java, feign, reflection, capability |
| Unable to deflate request body | exception | error | deflate, request-body, http-client, io |
| Cannot decode type | exception | error | jackson-jr, decoder, type-mismatch, deserialization |
| Do not wanted: ' ' but was invoked! | exception | error | mock, test, verification, negative-expectation |
| Wanted: ' ' to be invoked: ' ' times but got: ' '! | exception | error | mock, test, verification, invocation-count |
| Streams are not supported when using Reactive Wrappers | exception | error | reactive, stream, unsupported-type |
| is not a type supported by this decoder. | exception | error | json, decode, unsupported-type |
| Type must be an interface | validation | error | |
| template is required. | exception | error | java, feign, null-argument, uri-template, request-template |
| Cannot invoke constructor | exception | error | java, feign, reflection, constructor-exception |
| Received excessive request | exception | error | mock, testing, verification, feign |
| JAXB only supports encoding raw types. Found | exception | error | jaxb, encode, unsupported-type |
| Invocation Handler Factory overrides are not supported. | exception | error | reactive, builder, unsupported-operation |
| Too many constructors marked with @FeignExceptionConstructor | exception | error | java, feign, reflection, ambiguous-constructor |
| failed to open GraphQL subscription to | exception | error | graphql, websocket, subscription, network |
| JAXBContextFactory must be non-null | exception | error | soap, jaxb, builder, configuration, null-check |
| Mark not supported | exception | error | io, stream, micrometer, mark-reset |
| a value is required. | exception | error | java, feign, empty-string, uri-template, request-template |
| formatted errorMessageTemplate with errorMessageArgs | exception | error | precondition, illegal-argument, validation, java |
| SpringManyMultipartFilesReader does not support writing to… | exception | error | spring, multipart, unsupported-operation, encoder |
| values are required | exception | error | java, feign, query-string, null-argument, request-template |
| Not supported type | exception | error | jackson, generics, feign, decoder, illegal-argument |
| Wildcards are not supported for return-type parameters | validation | error | java, generics, wildcards, feign-client |
| StreamDecoder supports types other than stream. When type… | exception | error | java, feign, streaming, decoder, misconfiguration |
| Cannot find any suitable constructor in class | exception | error | java, feign, reflection, missing-constructor |
| variable map is required. | exception | error | uri-template, null-argument, validation |
| Expected a Class, ParameterizedType, or GenericArrayType… | exception | error | reflection, types, generic-type, java, illegal-argument |
| Cannot instantiate exception with constructor | exception | error | java, feign, reflection, instantiation |
| Empty targets don't have URLs | exception | error | target, url, unsupported-operation, java |
| Error occurred during encoding of the uri: | exception | error | uri-encoding, illegal-state, io |
| Output closing error | exception | error | feign, multipart, io-exception, encoder |
| ${jsonException.getMessage()} | exception | error | json, decoder, unsupported-type, feign |
| template has not been resolved. | exception | error | java, feign-client, request-template, lifecycle |
| at least one decoder is required | exception | error | feign, configuration, builder, empty-collection |
| is not a type supported by this encoder. | exception | error | encoding, encoder, unsupported-type, json, java |
| times must be a non negative number | exception | error | mock, test, verification, illegal-argument |
| url values must be not be absolute. | validation | error | java, feign-client, uri, invalid-argument |
| an expression is required. | exception | error | java, feign, uri-template, validation |
| Content-Disposition is not of type form-data. | exception | error | spring, multipart, content-disposition, malformed-body |
| Target is not a valid URI. | validation | error | java, feign-client, url, configuration |
| Invalid HTTP Method | validation | error | java, feign-client, http-method, invalid-argument |
| Request with non-absolute URL not supported with empty… | exception | error | target, empty-target, absolute-url, load-balancer, java |
| at least one encoder is required | exception | error | feign, configuration, builder, empty-collection |
| Content-Type is missing. | exception | error | multipart, deserialization, content-type, http-headers |
| Getting multipart file's content bytes error | exception | error | multipart, encoding, io, file-upload |
| There are no headers at all. | exception | error | multipart, deserialization, http-headers |
| Not an iterator type | exception | error | jackson, generics, feign, decoder, illegal-argument |
| This form encoder has no delegate encoder, so it can only… | exception | error | feign, encoder, configuration, form |
| No More Elements | exception | error | iterator, illegal-state, uri-template |
| target values must be absolute. | validation | error | java, feign-client, url, configuration |
| eventTimeout must not be negative | validation | error | graphql, configuration, duration, illegal-argument |