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Config Options for java
java
Option Description Values Default
additionalModelTypeAnnotations Additional annotations for model type(class level annotations) null
allowUnicodeIdentifiers boolean, toggles whether unicode identifiers are allowed in names or not, default is false false
apiPackage package for generated api classes org.openapitools.client.api
artifactDescription artifact description in generated pom.xml OpenAPI Java
artifactId artifactId in generated pom.xml. This also becomes part of the generated library's filename openapi-java-client
artifactUrl artifact URL in generated pom.xml https://github.com/openapitools/openapi-generator
artifactVersion artifact version in generated pom.xml. This also becomes part of the generated library's filename 1.0.0
bigDecimalAsString Treat BigDecimal values as Strings to avoid precision loss. false
booleanGetterPrefix Set booleanGetterPrefix get
caseInsensitiveResponseHeaders Make API response's headers case-insensitive. Available on okhttp-gson, jersey2 libraries false
dateLibrary Option. Date library to use
joda
Joda (for legacy app only)
legacy
Legacy java.util.Date (if you really have a good reason not to use threetenbp
java8-localdatetime
Java 8 using LocalDateTime (for legacy app only)
java8
Java 8 native JSR310 (preferred for jdk 1.8+) - note: this also sets "java8" to true
threetenbp
Backport of JSR310 (preferred for jdk < 1.8)
 threetenbp
developerEmail developer email in generated pom.xml [email protected]
developerName developer name in generated pom.xml OpenAPI-Generator Contributors
developerOrganization developer organization in generated pom.xml OpenAPITools.org
developerOrganizationUrl developer organization URL in generated pom.xml http://openapitools.org
disableHtmlEscaping Disable HTML escaping of JSON strings when using gson (needed to avoid problems with byte[] fields) false
discriminatorCaseSensitive Whether the discriminator value lookup should be case-sensitive or not. This option only works for Java API client true
ensureUniqueParams Whether to ensure parameter names are unique in an operation (rename parameters that are not). true
feignVersion Version of OpenFeign: '10.x' (default), '9.x' (deprecated) false
fullJavaUtil whether to use fully qualified name for classes under java.util. This option only works for Java API client false
groupId groupId in generated pom.xml org.openapitools
hideGenerationTimestamp Hides the generation timestamp when files are generated. false
invokerPackage root package for generated code org.openapitools.client
java8 Option. Use Java8 classes instead of third party equivalents
true
Use Java 8 classes such as Base64
false
Various third party libraries as needed
 false
legacyDiscriminatorBehavior This flag is used by OpenAPITools codegen to influence the processing of the discriminator attribute in OpenAPI documents. This flag has no impact if the OAS document does not use the discriminator attribute. The default value of this flag is set in each language-specific code generator (e.g. Python, Java, go...)using the method toModelName.

When this flag is set to false:

  • The mapping in the discriminator includes any descendent schemas that allOf inherit from self, any oneOf schemas, any anyOf schemas, any x-discriminator-values, and the discriminator mapping schemas in the OAS document.

  • Codegen validates that oneOf and anyOf schemas contain the required discriminator and throws an error if the discriminator is missing. When this flag is set to true:

  • The mapping in the discriminator includes descendent schemas that allOf inherit from self and the discriminator mapping schemas in the OAS document. Note to developers supporting a language generator in OpenAPITools: to fully support the discriminator attribute as defined in the OAS specification 3.x, language generators should set this flag to true by default; however this requires updating the mustache templates to generate a language-specific discriminator lookup function that iterates over {{#mappedModels}} and does not iterate over {{children}}, {{#anyOf}}, or {{#oneOf}}.| |true| |library|library template (sub-template) to use|

    jersey1
    HTTP client: Jersey client 1.19.x. JSON processing: Jackson 2.9.x. Enable Java6 support using '-DsupportJava6=true'. Enable gzip request encoding using '-DuseGzipFeature=true'. IMPORTANT NOTE: jersey 1.x is no longer actively maintained so please upgrade to 'jersey2' or other HTTP libaries instead.
    jersey2
    HTTP client: Jersey client 2.25.1. JSON processing: Jackson 2.9.x
    jersey2-experimental
    HTTP client: Jersey client 2.25.1. JSON processing: Jackson 2.9.x
    feign
    HTTP client: OpenFeign 9.x (deprecated) or 10.x (default). JSON processing: Jackson 2.9.x.
    okhttp-gson
    [DEFAULT] HTTP client: OkHttp 3.x. JSON processing: Gson 2.8.x. Enable Parcelable models on Android using '-DparcelableModel=true'. Enable gzip request encoding using '-DuseGzipFeature=true'.
    retrofit
    HTTP client: OkHttp 2.x. JSON processing: Gson 2.x (Retrofit 1.9.0). IMPORTANT NOTE: retrofit1.x is no longer actively maintained so please upgrade to 'retrofit2' instead.
    retrofit2
    HTTP client: OkHttp 3.x. JSON processing: Gson 2.x (Retrofit 2.3.0). Enable the RxJava adapter using '-DuseRxJava[2]=true'. (RxJava 1.x or 2.x)
    resttemplate
    HTTP client: Spring RestTemplate 4.x. JSON processing: Jackson 2.9.x
    webclient
    HTTP client: Spring WebClient 5.x. JSON processing: Jackson 2.9.x
    resteasy
    HTTP client: Resteasy client 3.x. JSON processing: Jackson 2.9.x
    vertx
    HTTP client: VertX client 3.x. JSON processing: Jackson 2.9.x
    google-api-client
    HTTP client: Google API client 1.x. JSON processing: Jackson 2.9.x
    rest-assured
    HTTP client: rest-assured : 4.x. JSON processing: Gson 2.x or Jackson 2.10.x. Only for Java 8
    native
    HTTP client: Java native HttpClient. JSON processing: Jackson 2.9.x. Only for Java11+
    microprofile
    HTTP client: Microprofile client X.x. JSON processing: Jackson 2.9.x
    |okhttp-gson| |licenseName|The name of the license| |Unlicense| |licenseUrl|The URL of the license| |http://unlicense.org| |modelPackage|package for generated models| |org.openapitools.client.model| |parcelableModel|Whether to generate models for Android that implement Parcelable with the okhttp-gson library.| |false| |parentArtifactId|parent artifactId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null| |parentGroupId|parent groupId in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null| |parentVersion|parent version in generated pom N.B. parentGroupId, parentArtifactId and parentVersion must all be specified for any of them to take effect| |null| |performBeanValidation|Perform BeanValidation| |false| |playVersion|Version of Play! Framework (possible values "play24", "play25" (default), "play26")| |null| |prependFormOrBodyParameters|Add form or body parameters to the beginning of the parameter list.| |false| |scmConnection|SCM connection in generated pom.xml| |scm:git:[email protected]:openapitools/openapi-generator.git| |scmDeveloperConnection|SCM developer connection in generated pom.xml| |scm:git:[email protected]:openapitools/openapi-generator.git| |scmUrl|SCM URL in generated pom.xml| |https://github.com/openapitools/openapi-generator| |serializableModel|boolean - toggle "implements Serializable" for generated models| |false| |serializationLibrary|Serialization library, default depends from the library|
    jackson
    Use Jackson as serialization library
    gson
    Use Gson as serialization library
    |null| |snapshotVersion|Uses a SNAPSHOT version.|
    true
    Use a SnapShot Version
    false
    Use a Release Version
    |null| |sortModelPropertiesByRequiredFlag|Sort model properties to place required parameters before optional parameters.| |true| |sortParamsByRequiredFlag|Sort method arguments to place required parameters before optional parameters.| |true| |sourceFolder|source folder for generated code| |src/main/java| |supportJava6|Whether to support Java6 with the Jersey1 library.| |false| |useBeanValidation|Use BeanValidation API annotations| |false| |useGzipFeature|Send gzip-encoded requests| |false| |usePlayWS|Use Play! Async HTTP client (Play WS API)| |false| |useReflectionEqualsHashCode|Use org.apache.commons.lang3.builder for equals and hashCode in the models. WARNING: This will fail under a security manager, unless the appropriate permissions are set up correctly and also there's potential performance impact.| |false| |useRuntimeException|Use RuntimeException instead of Exception| |false| |useRxJava|Whether to use the RxJava adapter with the retrofit2 library.| |false| |useRxJava2|Whether to use the RxJava2 adapter with the retrofit2 library.| |false| |withXml|whether to include support for application/xml content type and include XML annotations in the model (works with libraries that provide support for JSON and XML)| |false|

IMPORT MAPPING

Type/Alias Imports
Array java.util.List
ArrayList java.util.ArrayList
BigDecimal java.math.BigDecimal
Date java.util.Date
DateTime org.joda.time.*
File java.io.File
HashMap java.util.HashMap
List java.util.*
LocalDate org.joda.time.*
LocalDateTime org.joda.time.*
LocalTime org.joda.time.*
Map java.util.Map
Set java.util.*
Timestamp java.sql.Timestamp
URI java.net.URI
UUID java.util.UUID

INSTANTIATION TYPES

Type/Alias Instantiated By
array ArrayList
map HashMap

LANGUAGE PRIMITIVES

  • Boolean
  • Double
  • Float
  • Integer
  • Long
  • Object
  • String
  • boolean
  • byte[]

RESERVED WORDS

  • abstract
  • apiclient
  • apiexception
  • apiresponse
  • assert
  • boolean
  • break
  • byte
  • case
  • catch
  • char
  • class
  • configuration
  • const
  • continue
  • default
  • do
  • double
  • else
  • enum
  • extends
  • final
  • finally
  • float
  • for
  • goto
  • if
  • implements
  • import
  • instanceof
  • int
  • interface
  • localreturntype
  • localvaraccept
  • localvaraccepts
  • localvarauthnames
  • localvarcollectionqueryparams
  • localvarcontenttype
  • localvarcontenttypes
  • localvarcookieparams
  • localvarformparams
  • localvarheaderparams
  • localvarpath
  • localvarpostbody
  • localvarqueryparams
  • long
  • native
  • new
  • null
  • object
  • package
  • private
  • protected
  • public
  • return
  • short
  • static
  • strictfp
  • stringutil
  • super
  • switch
  • synchronized
  • this
  • throw
  • throws
  • transient
  • try
  • void
  • volatile
  • while

FEATURE SET

Client Modification Feature

Name Supported Defined By
BasePath ✓ ToolingExtension
Authorizations ✗ ToolingExtension
UserAgent ✗ ToolingExtension

Data Type Feature

Name Supported Defined By
Custom ✗ OAS2,OAS3
Int32 ✓ OAS2,OAS3
Int64 ✓ OAS2,OAS3
Float ✓ OAS2,OAS3
Double ✓ OAS2,OAS3
Decimal ✓ ToolingExtension
String ✓ OAS2,OAS3
Byte ✓ OAS2,OAS3
Binary ✓ OAS2,OAS3
Boolean ✓ OAS2,OAS3
Date ✓ OAS2,OAS3
DateTime ✓ OAS2,OAS3
Password ✓ OAS2,OAS3
File ✓ OAS2
Array ✓ OAS2,OAS3
Maps ✓ ToolingExtension
CollectionFormat ✓ OAS2
CollectionFormatMulti ✓ OAS2
Enum ✓ OAS2,OAS3
ArrayOfEnum ✓ ToolingExtension
ArrayOfModel ✓ ToolingExtension
ArrayOfCollectionOfPrimitives ✓ ToolingExtension
ArrayOfCollectionOfModel ✓ ToolingExtension
ArrayOfCollectionOfEnum ✓ ToolingExtension
MapOfEnum ✓ ToolingExtension
MapOfModel ✓ ToolingExtension
MapOfCollectionOfPrimitives ✓ ToolingExtension
MapOfCollectionOfModel ✓ ToolingExtension
MapOfCollectionOfEnum ✓ ToolingExtension

Documentation Feature

Name Supported Defined By
Readme ✓ ToolingExtension
Model ✓ ToolingExtension
Api ✓ ToolingExtension

Global Feature

Name Supported Defined By
Host ✓ OAS2,OAS3
BasePath ✓ OAS2,OAS3
Info ✓ OAS2,OAS3
Schemes ✗ OAS2,OAS3
PartialSchemes ✓ OAS2,OAS3
Consumes ✓ OAS2
Produces ✓ OAS2
ExternalDocumentation ✓ OAS2,OAS3
Examples ✓ OAS2,OAS3
XMLStructureDefinitions ✗ OAS2,OAS3
MultiServer ✗ OAS3
ParameterizedServer ✓ OAS3
ParameterStyling ✗ OAS3
Callbacks ✗ OAS3
LinkObjects ✗ OAS3

Parameter Feature

Name Supported Defined By
Path ✓ OAS2,OAS3
Query ✓ OAS2,OAS3
Header ✓ OAS2,OAS3
Body ✓ OAS2
FormUnencoded ✓ OAS2
FormMultipart ✓ OAS2
Cookie ✓ OAS3

Schema Support Feature

Name Supported Defined By
Simple ✓ OAS2,OAS3
Composite ✓ OAS2,OAS3
Polymorphism ✗ OAS2,OAS3
Union ✗ OAS3

Security Feature

Name Supported Defined By
BasicAuth ✗ OAS2,OAS3
ApiKey ✗ OAS2,OAS3
OpenIDConnect ✗ OAS3
BearerToken ✗ OAS3
OAuth2_Implicit ✗ OAS2,OAS3
OAuth2_Password ✗ OAS2,OAS3
OAuth2_ClientCredentials ✗ OAS2,OAS3
OAuth2_AuthorizationCode ✗ OAS2,OAS3

Wire Format Feature

Name Supported Defined By
JSON ✓ OAS2,OAS3
XML ✓ OAS2,OAS3
PROTOBUF ✗ ToolingExtension
Custom ✗ OAS2,OAS3