Issues with spring-security dependencies using Maven - spring

Question

I am using Spring Framework to create a web application, and using maven as a builder.
In order to interact with Spring's security features, I have added to my pom.xml two different dependencies:
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-web</artifactId>
<version>4.0.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-config</artifactId>
<version>4.0.3.RELEASE</version>
</dependency>
I ordered maven to clean package and executed mvn spring-boot:run to get the following error message:
java.lang.IllegalAccessError: tried to access method org.springframework.core.convert.support.DefaultConversionService.addCollectionConverters(Lorg/springframework/core/convert/converter/ConverterRegistry;)V from class org.springframework.boot.bind.RelaxedConversionService
From the stack trace, (added below) I understand that the error starts with the main function, which is placed in Program.java file.
The main function is the following:
public static void main(String[] args) {
SpringApplication.run(Program.class, args);
}
Things to note and speculations
My pom.xml file is compiled from various tutorials I have read online, and once I got all to work together I continued.
Furthermore, I am working behind a corporate network where there is a local repository, so some of the dependencies might not be up to date or the latest version available. There might be a mismatch of versions somewhere in the pom, but I cannot seem to trace one.
To (try to) recreate the error, copy the pom.xml below and add the 2 dependencies.
If failed to recreate, I can only assume one of the packages is damaged or corrupt (I have encountered bad packages on the local repository a few times).
My pom.xml without the two new dependencies (works just fine when ran):
<?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>ssp</groupId>
<artifactId>sspserver</artifactId>
<version>1.0</version>
<packaging>jar</packaging>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
<version>1.5.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
<version>1.5.6.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>1.5.6.RELEASE</version>
</dependency>
<dependency>
<groupId>com.github.eirslett</groupId>
<artifactId>frontend-maven-plugin</artifactId>
<version>1.3</version>
</dependency>
<!-- Local jars -->
<dependency>
<groupId>SSPClient</groupId>
<artifactId>SSPClient</artifactId>
<scope>system</scope>
<version>1.0.0</version>
<systemPath>${basedir}\lib\SSPClient.jar</systemPath>
</dependency>
<dependency>
<groupId>smp8</groupId>
<artifactId>smp8</artifactId>
<scope>system</scope>
<version>1.0.0</version>
<systemPath>${basedir}\lib\smp8.jar</systemPath>
</dependency>
</dependencies>
<build>
<finalName>sspserver</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<version>1.5.6.RELEASE</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
</project>
Entire stack trace:
java.lang.IllegalAccessError: tried to access method org.springframework.core.convert.support.DefaultConversionService.addCollectionConverters(Lorg/springframework/core/convert/converter/ConverterRegistry;)V from class org.springframework.boot.bind.RelaxedConversionService
at org.springframework.boot.bind.RelaxedConversionService.<init>(RelaxedConversionService.java:52)
at org.springframework.boot.bind.RelaxedDataBinder.modifyProperties(RelaxedDataBinder.java:148)
at org.springframework.boot.bind.RelaxedDataBinder.doBind(RelaxedDataBinder.java:128)
at org.springframework.validation.DataBinder.bind(DataBinder.java:715)
at org.springframework.boot.bind.PropertiesConfigurationFactory.doBindPropertiesToTarget(PropertiesConfigurationFactory.java:272)
at org.springframework.boot.bind.PropertiesConfigurationFactory.bindPropertiesToTarget(PropertiesConfigurationFactory.java:240)
at org.springframework.boot.context.config.ConfigFileApplicationListener.bindToSpringApplication(ConfigFileApplicationListener.java:241)
at org.springframework.boot.context.config.ConfigFileApplicationListener.postProcessEnvironment(ConfigFileApplicationListener.java:197)
at org.springframework.boot.context.config.ConfigFileApplicationListener.onApplicationEnvironmentPreparedEvent(ConfigFileApplicationListener.java:182)
at org.springframework.boot.context.config.ConfigFileApplicationListener.onApplicationEvent(ConfigFileApplicationListener.java:168)
at org.springframework.context.event.SimpleApplicationEventMulticaster.invokeListener(SimpleApplicationEventMulticaster.java:163)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:136)
at org.springframework.context.event.SimpleApplicationEventMulticaster.multicastEvent(SimpleApplicationEventMulticaster.java:119)
at org.springframework.boot.context.event.EventPublishingRunListener.environmentPrepared(EventPublishingRunListener.java:74)
at org.springframework.boot.SpringApplicationRunListeners.environmentPrepared(SpringApplicationRunListeners.java:54)
at org.springframework.boot.SpringApplication.prepareEnvironment(SpringApplication.java:325)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:296)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1118)
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1107)
at cpssp.Program.main(Program.java:10)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49)

Answer 1

The issue was that I was trying to use spring-security-* with spring-boot.
Instead, I needed to use:
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
<version>1.5.6.RELEASE</version>
</dependency>
Which is compatible with spring-boot.