如何使用Swagger Codegen生成代码，针对这个问题，这篇文章详细介绍了相对应的分析和解答，希望可以帮助更多想解决这个问题的小伙伴找到更简单易行的方法。
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由于开发的服务端内容，很多需要生成多种客户端代码，则需要自动化转换。
OpenApi代码生成流程
Springboot引入SwaggerUI
运行SwaggerUI，获取接口的Json文件
直接命令生成客户端代码
Mac安装
brew install swagger-codegen
运行如下内容
==> Downloading https://homebrew.bintray.com/bottles/swagger-codegen-3.0.13.high_sierra.bottle.tar.gz
==> Downloading from https://akamai.bintray.com/16/162075201143d225c420496cdc5529093be529ebe4ad7ec1d7a7fa922bb35d4b?__gda__=exp=1571906628~hmac=033f62943a9bf07acbd4cec7d9ac
######################################################## 78.3%
curl: (18) transfer closed with 3941668 bytes remaining to read
Error: Failed to download resource "swagger-codegen"
Download failed: https://homebrew.bintray.com/bottles/swagger-codegen-3.0.13.high_sierra.bottle.tar.gz
Warning: Bottle installation failed: building from source.
==> Installing dependencies for swagger-codegen: maven
==> Installing swagger-codegen dependency: maven
==> Downloading https://www.apache.org/dyn/closer.cgi?path=maven/maven-3/3.6.2/binaries/apache-maven-3.6.2-bin.tar.gz
==> Downloading from http://mirrors.tuna.tsinghua.edu.cn/apache/maven/maven-3/3.6.2/binaries/apache-maven-3.6.2-bin.tar.gz
######################################################################## 100.0%
???? /usr/local/Cellar/maven/3.6.2: 71 files, 10.2MB, built in 5 seconds
==> Downloading https://github.com/swagger-api/swagger-codegen/archive/v3.0.13.tar.gz
==> Downloading from https://codeload.github.com/swagger-api/swagger-codegen/tar.gz/v3.0.13
######################################################################## 100.0%
==> mvn clean package
查看swagger支持的语言种类
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar
能够看到如下结果
Available languages: [ada, ada-server, akka-scala, android, apache2, apex, aspnetcore, bash, csharp, clojure, cwiki, cpprest, csharp-dotnet2, dart, dart-jaguar, elixir, elm, eiffel, erlang-client, erlang-server, finch, flash, python-flask, go, go-server, groovy, haskell-http-client, haskell, jmeter, jaxrs-cxf-client, jaxrs-cxf, java, inflector, jaxrs-cxf-cdi, jaxrs-spec, jaxrs, msf4j, java-pkmst, java-play-framework, jaxrs-resteasy-eap, jaxrs-resteasy, javascript, javascript-closure-angular, java-vertx, kotlin, lua, lumen, nancyfx, nodejs-server, objc, perl, php, powershell, pistache-server, python, qt5cpp, r, rails5, restbed, ruby, rust, rust-server, scala, scala-gatling, scala-lagom-server, scalatra, scalaz, php-silex, sinatra, slim, spring, dynamic-html, html2, html, swagger, swagger-yaml, swift4, swift3, swift, php-symfony, tizen, typescript-aurelia, typescript-angular, typescript-inversify, typescript-angularjs, typescript-fetch, typescript-jquery, typescript-node, undertow, ze-ph, kotlin-server]
查看帮助
$ java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar help
usage: swagger-codegen-cli []
The most commonly used swagger-codegen-cli commands are:
config-help Config help for chosen lang
generate Generate code with chosen lang
help Display help information
langs Shows available langs
meta MetaGenerator. Generator for creating a new template set and configuration for Codegen. The output will be based on the language you specify, and includes default templates to include.
validate Validate specification
version Show version information
See 'swagger-codegen-cli help ' for more information on a specific
command.
查看generate帮助
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar help generate
NAME
swagger-codegen-cli generate - Generate code with chosen lang
SYNOPSIS
swagger-codegen-cli generate
[(-a | --auth )]
[--additional-properties ...]
[--api-package ] [--artifact-id ]
[--artifact-version ]
[(-c | --config )]
[-D ...] [--git-repo-id ]
[--git-user-id ] [--group-id ]
[--http-user-agent ]
(-i | --input-spec )
[--ignore-file-override ]
[--import-mappings ...]
[--instantiation-types ...]
[--invoker-package ]
(-l | --lang )
[--language-specific-primitives ...]
[--library ] [--model-name-prefix ]
[--model-name-suffix ]
[--model-package ]
[(-o | --output )]
[--release-note ] [--remove-operation-id-prefix]
[--reserved-words-mappings ...]
[(-s | --skip-overwrite)]
[(-t | --template-dir )]
[--type-mappings ...] [(-v | --verbose)]
OPTIONS
-a , --auth
adds authorization headers when fetching the swagger definitions
remotely. Pass in a URL-encoded string of name:header with a comma
separating multiple values
--additional-properties
sets additional properties that can be referenced by the mustache
templates in the format of name=value,name=value. You can also have
multiple occurrences of this option.
--api-package
package for generated api classes
--artifact-id
artifactId in generated pom.xml
--artifact-version
artifact version in generated pom.xml
-c , --config
Path to json configuration file. File content should be in a json
format {"optionKey":"optionValue", "optionKey1":"optionValue1"...}
Supported options can be different for each language. Run
config-help -l {lang} command for language specific config options.
-D
sets specified system properties in the format of
name=value,name=value (or multiple options, each with name=value)
--git-repo-id
Git repo ID, e.g. swagger-codegen.
--git-user-id
Git user ID, e.g. swagger-api.
--group-id
groupId in generated pom.xml
--http-user-agent
HTTP user agent, e.g. codegen_csharp_api_client, default to
'Swagger-Codegen/{packageVersion}}/{language}'
-i , --input-spec
location of the swagger spec, as URL or file (required)
--ignore-file-override
Specifies an override location for the .swagger-codegen-ignore file.
Most useful on initial generation.
--import-mappings
specifies mappings between a given class and the import that should
be used for that class in the format of type=import,type=import. You
can also have multiple occurrences of this option.
--instantiation-types
sets instantiation type mappings in the format of
type=instantiatedType,type=instantiatedType.For example (in Java):
array=ArrayList,map=HashMap. In other words array types will get
instantiated as ArrayList in generated code. You can also have
multiple occurrences of this option.
--invoker-package
root package for generated code
-l , --lang
client language to generate (maybe class name in classpath,
required)
--language-specific-primitives
specifies additional language specific primitive types in the format
of type1,type2,type3,type3. For example:
String,boolean,Boolean,Double. You can also have multiple
occurrences of this option.
--library
library template (sub-template)
--model-name-prefix
Prefix that will be prepended to all model names. Default is the
empty string.
--model-name-suffix
Suffix that will be appended to all model names. Default is the
empty string.
--model-package
package for generated models
-o , --output
where to write the generated files (current dir by default)
--release-note
Release note, default to 'Minor update'.
--remove-operation-id-prefix
Remove prefix of operationId, e.g. config_getId => getId
--reserved-words-mappings
specifies how a reserved name should be escaped to. Otherwise, the
default _ is used. For example id=identifier. You can also
have multiple occurrences of this option.
-s, --skip-overwrite
specifies if the existing files should be overwritten during the
generation.
-t , --template-dir
folder containing the template files
--type-mappings
sets mappings between swagger spec types and generated code types in
the format of swaggerType=generatedType,swaggerType=generatedType.
For example: array=List,map=Map,string=String. You can also have
multiple occurrences of this option.
-v, --verbose
verbose mode
生成代码
java -jar modules/swagger-codegen-cli/target/swagger-codegen-cli.jar generate -i http://localhost:8000/v2/api-docs?group=v2/aicfve-sync -l csharp
生成Unity可用代码
由于当前版本的Unity支持.Net Standard 2.0标准。则所有代码不能默认生成csharp代码，将会导致问题的发生。
todo：
修改库的命名
todo:
关于如何使用Swagger Codegen生成代码问题的解答就分享到这里了，希望以上内容可以对大家有一定的帮助，如果你还有很多疑惑没有解开，可以关注创新互联行业资讯频道了解更多相关知识。
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