up to version 3.1.7 the project compiles. With version 3.1.8 an "NullPointerException " error occurs.
[INFO] Scanning for projects...
[INFO]
[INFO] ------------< swagger-maven-example:swagger-maven-example >-------------
[INFO] Building swagger-maven-example 1.0-SNAPSHOT
[INFO] --------------------------------[ war ]---------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.5:clean (default-clean) @ swagger-maven-example ---
[INFO] Deleting C:\Users\samuelfac\Downloads\swagger-maven-example-master\target
[INFO]
[INFO] --- maven-resources-plugin:2.6:resources (default-resources) @ swagger-maven-example ---
[WARNING] Using platform encoding (Cp1252 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 2 resources
[INFO]
[INFO] --- maven-compiler-plugin:3.1:compile (default-compile) @ swagger-maven-example ---
[INFO] Changes detected - recompiling the module!
[WARNING] File encoding has not been set, using platform encoding Cp1252, i.e. build is platform dependent!
[INFO] Compiling 16 source files to C:\Users\samuelfac\Downloads\swagger-maven-example-master\target\classes
[INFO]
[INFO] --- swagger-maven-plugin:3.1.8:generate (default) @ swagger-maven-example ---
11:56:51,762 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback.groovy]
11:56:51,762 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Could NOT find resource [logback-test.xml]
11:56:51,762 |-INFO in ch.qos.logback.classic.LoggerContext[default] - Found resource [logback.xml] at [file:/C:/Users/samuelfac/Downloads/swagger-maven-example-master/target/classes/logback.xml]
11:56:51,810 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - debug attribute not set
11:56:51,814 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - About to instantiate appender of type [ch.qos.logback.core.ConsoleAppender]
11:56:51,817 |-INFO in ch.qos.logback.core.joran.action.AppenderAction - Naming appender as [STDOUT]
11:56:51,852 |-WARN in ch.qos.logback.core.ConsoleAppender[STDOUT] - This appender no longer admits a layout as a sub-component, set an encoder instead.
11:56:51,852 |-WARN in ch.qos.logback.core.ConsoleAppender[STDOUT] - To ensure compatibility, wrapping your layout in LayoutWrappingEncoder.
11:56:51,852 |-WARN in ch.qos.logback.core.ConsoleAppender[STDOUT] - See also http://logback.qos.ch/codes.html#layoutInsteadOfEncoder for details
11:56:51,852 |-INFO in ch.qos.logback.classic.joran.action.LoggerAction - Setting level of logger [com.wordnik] to DEBUG
11:56:51,852 |-INFO in ch.qos.logback.classic.joran.action.RootLoggerAction - Setting level of ROOT logger to DEBUG
11:56:51,852 |-INFO in ch.qos.logback.core.joran.action.AppenderRefAction - Attaching appender named [STDOUT] to Logger[ROOT]
11:56:51,853 |-INFO in ch.qos.logback.classic.joran.action.ConfigurationAction - End of configuration.
11:56:51,854 |-INFO in ch.qos.logback.classic.joran.JoranConfigurator@7fbf26fc - Registering current configuration as safe fallback point
[INFO] Reflections took 63 ms to scan 1 urls, producing 3 keys and 9 values
[INFO] Reflections took 4 ms to scan 1 urls, producing 3 keys and 9 values
[INFO] Reflections took 4 ms to scan 1 urls, producing 3 keys and 9 values
[INFO] Reflections took 4 ms to scan 1 urls, producing 3 keys and 9 values
[INFO] Reflections took 3 ms to scan 1 urls, producing 3 keys and 9 values
[INFO] Reflections took 3 ms to scan 1 urls, producing 3 keys and 9 values
[INFO] Reflections took 5 ms to scan 1 urls, producing 6 keys and 18 values
[INFO] Reflections took 9 ms to scan 1 urls, producing 6 keys and 18 values
[INFO] Reflections took 5 ms to scan 1 urls, producing 6 keys and 18 values
[INFO] Writing doc to C:\Users\samuelfac\Downloads\swagger-maven-example-master/generated/document.html...
[INFO] Done!
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.634 s
[INFO] Finished at: 2020-08-17T11:56:52+02:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal com.github.kongchen:swagger-maven-plugin:3.1.8:generate (default) on project swagger-maven-example: null: MojoExecutionException: NullPointerException -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
<?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 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>swagger-maven-example</groupId>
<artifactId>swagger-maven-example</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>war</packaging>
<build>
<plugins>
<plugin>
<groupId>com.github.kongchen</groupId>
<artifactId>swagger-maven-plugin</artifactId>
<version>3.1.8</version>
<configuration>
<apiSources>
<apiSource>
<springmvc>false</springmvc>
<locations>com.github.kongchen.swagger.sample.wordnik.resource</locations>
<schemes>http,https</schemes>
<host>petstore.swagger.wordnik.com</host>
<basePath>/api</basePath>
<info>
<title>Swagger Maven Plugin Sample</title>
<version>v1</version>
<description>This is a sample for swagger-maven-plugin</description>
<termsOfService>
http://www.github.com/kongchen/swagger-maven-plugin
</termsOfService>
<contact>
<email>kongchen@gmail.com</email>
<name>Kong Chen</name>
<url>http://kongch.com</url>
</contact>
<license>
<url>http://www.apache.org/licenses/LICENSE-2.0.html</url>
<name>Apache 2.0</name>
</license>
</info>
<!-- Support classpath or file absolute path here.
1) classpath e.g: "classpath:/markdown.hbs", "classpath:/templates/hello.html"
2) file e.g: "${basedir}/src/main/resources/markdown.hbs",
"${basedir}/src/main/resources/template/hello.html" -->
<templatePath>${basedir}/templates/strapdown.html.hbs</templatePath>
<outputPath>${basedir}/generated/document.html</outputPath>
<swaggerDirectory>generated/swagger-ui</swaggerDirectory>
<securityDefinitions>
<securityDefinition>
<json>/securityDefinitions.json</json>
</securityDefinition>
</securityDefinitions>
</apiSource>
</apiSources>
</configuration>
<executions>
<execution>
<phase>compile</phase>
<goals>
<goal>generate</goal>
</goals>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.1.1</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>io.swagger</groupId>
<artifactId>swagger-core</artifactId>
<scope>compile</scope>
<version>1.5.3</version>
<exclusions>
<exclusion>
<groupId>javax.ws.rs</groupId>
<artifactId>jsr311-api</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-classic</artifactId>
<version>${logback-version}</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>ch.qos.logback</groupId>
<artifactId>logback-core</artifactId>
<version>${logback-version}</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-servlet-core</artifactId>
<version>${jersey2-version}</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-multipart</artifactId>
<version>${jersey2-version}</version>
</dependency>
</dependencies>
<properties>
<jetty-version>9.0.7.v20131107</jetty-version>
<jersey2-version>2.4.1</jersey2-version>
<logback-version>1.0.1</logback-version>
</properties>
<pluginRepositories>
<pluginRepository>
<id>sonatype-snapshot</id>
<url>https://oss.sonatype.org/content/repositories/snapshots/</url>
<releases>
<enabled>false</enabled>
</releases>
<snapshots>
<enabled>true</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
</project>
up to version 3.1.7 the project compiles. With version 3.1.8 an "NullPointerException " error occurs.
Log:
pom.xml
command:
mvn clean install