更新：我在这个URL https://repo1.maven.org/maven2/io/swagger/swagger-codegen-maven-plugin/上看到swagger codegen的唯一版本是3.0.0-rc 1
我正在尝试用Java/SpringBoot和swagger-codegen插件来构建一个REST API。我可以使用swagger-codegen 2.3.1的插件版本，它因为某些原因下载很好。

但是，我尝试使用Open api规范3.0，而2.3.1不起作用，我在Stackoverflow上发现有人说我需要使用swagger-codegen的3.X.X才能使用Open api规范3.0。

因此，我改变了插件版本为3.0.0，和3.0.25和许多不同的版本，但它一直失败，无论我做什么：

[ERROR] Plugin io.swagger:swagger-codegen-maven-plugin:3.0.0 or one of its dependencies could not be resolved: Could not find artifact io.swagger:swagger-codegen-maven-plugin:jar:3.0.0 in central (https://repo1.maven.org/maven2) -> [Help 1]
org.apache.maven.plugin.PluginResolutionException: Plugin io.swagger:swagger-codegen-maven-plugin:3.0.0 or one of its dependencies could not be resolved: Could not find artifact io.swagger:swagger-codegen-maven-plugin:jar:3.0.0 in central (https://repo1.maven.org/maven2)

我一直在摆弄我的settings.xml文件和pom.xml，但似乎什么都不起作用。我很困惑，因为这个JAR在maven Central上，所以它应该很容易下载，对吗？而且，我试着将它作为依赖项和插件添加，依赖项似乎下载得很好（甚至版本3.0.25），只是插件总是失败。
我会说我是在一个工作计算机上作为代理，但我添加了信息到settings.xml-这可能是相关的？
我的pom.xml

<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
    <modelVersion>4.0.0</modelVersion>
    <parent>
        <groupId>org.springframework.boot</groupId>
        <artifactId>spring-boot-starter-parent</artifactId>
        <version>2.4.4</version>
        <relativePath/> <!-- lookup parent from repository -->
    </parent>
    <groupId>com.mydomain.me</groupId>
    <artifactId>my-api</artifactId>
    <version>0.0.1-SNAPSHOT</version>
    <name>My API</name>
    <description>Version 2.0 of my API</description>
    <properties>
        <java.version>11</java.version>
    </properties>

    <pluginRepositories>
        <pluginRepository>
            <id>central</id>
            <name>Maven Central</name>
            <layout>default</layout>
            <url>https://repo1.maven.org/maven2</url>
            <snapshots>
                <enabled>false</enabled>
            </snapshots>
        </pluginRepository>
    </pluginRepositories>

    <dependencies>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-actuator</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>com.h2database</groupId>
            <artifactId>h2</artifactId>
            <scope>runtime</scope>
        </dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-test</artifactId>
            <scope>test</scope>
        </dependency>

        <dependency>
            <groupId>io.swagger.codegen.v3</groupId>
            <artifactId>swagger-codegen-cli</artifactId>
            <version>3.0.25</version>
        </dependency>
    </dependencies>

    <build>
        <plugins>
            <plugin>
                <groupId>org.springframework.boot</groupId>
                <artifactId>spring-boot-maven-plugin</artifactId>
            </plugin>
            <plugin>
                <groupId>io.swagger</groupId>
                <artifactId>swagger-codegen-maven-plugin</artifactId>
                <version>3.0.25</version>
                <executions>
                    <execution>
                        <goals>
                            <goal>generate</goal>
                        </goals>
                        <configuration>
                            <inputSpec>${project.basedir}/src/main/resources/api.yaml</inputSpec>
                            <output>${project.basedir}/target/generated-sources</output>
                            <language>java</language>
                            <configOptions>
                                <sourceFolder>src/gen/java/main</sourceFolder>
                            </configOptions>
                        </configuration>
                    </execution>
                </executions>
            </plugin>
        </plugins>
    </build>

</project>