Cannot assign configuration entry 'locations' with value 'com.xyz.my-project.v10.resources' of type java.lang.String to property of type java.util.List

We are facing below issue with Swagger maven plugin. Although it is working on one or two machines and swagger json getting generated successfully.

Not sure if it has to anything with maven version. Most of us have maven version = 3.2.1

[ERROR] Failed to execute goal com.github.kongchen:swagger-maven-plugin:3.1.4:generate (default) on project my-project-rest: Unable to parse configuration of mojo com.github.kongchen:swagger-maven-plugin:3.1.4:generate for parameter locations: Cannot assign configuration entry ‘locations’ with value ‘com.xyz.my-project.v10.resources’ of type java.lang.String to property of type java.util.List

Could anyone please help us! Thanks. Rahul

			<plugin>
				<groupId>com.github.kongchen</groupId>
				<artifactId>swagger-maven-plugin</artifactId>
				<version>3.1.4</version>
				<configuration>
					<apiSources>
						<apiSource>
							<springmvc>false</springmvc>
							<locations>com.xyz.my-project.v10.resources</locations>
							<schemes>http,https</schemes>
							<host>http://localhost:8001</host>
							<basePath>/api</basePath>
							<info>
								<title>Swagger spec for REST API</title>
								<version>v1.0</version>
								<description>My Project REST API</description>
								<termsOfService>
									http://www.xyz.com/terms-and-conditions
								</termsOfService>
								<contact>
									<email>admin(@)testcompany.com</email>
									<name>Admin</name>
									<url>http://www.xyz.com</url>
								</contact>
								<license>
									<url>http://www.xyz.com/licenses/LICENSE-2.0.html</url>
									<name>Project Licence</name>
								</license>
							</info>
							<templatePath>${project.basedir}/src/swagger-templates/strapdown.html.hbs</templatePath>
							<outputPath>${project.basedir}/target/rest-docs/swagger-doc.html</outputPath>
							<swaggerDirectory>${project.basedir}/src/main/resources</swaggerDirectory>
						</apiSource>
					</apiSources>
				</configuration>
				<executions>
					<execution>
						<phase>compile</phase>
						<goals>
							<goal>generate</goal>
						</goals>
					</execution>
				</executions>
			</plugin>

[rahul-winner]

Thanks @viktorgunnarson @JoepWeijers

I believe I found the the real issue. The new maven (MoJo) e.g. 3.3.9 is able to assign values to <locations> even if those are not defined within <location> tag.

However, the older version of maven needs parameters whose type is ArrayList/List to be passed as set of tags.

If one updates the version of maven to 3.3.9 and just uses <locations> then it works well.

Kindly confirm

[JoepWeijers]

Hello Rahul, I think there is a mistake in your <locations> tags. It expects a list of <location>s, not a string, like so:

<locations>
  <location>com.xyz.my-project.v10.resources</location>
</locations>