Failed to execute CommandLineRunner - Spring security - spring

Question

Hi I am very new to Spring batch and I am getting the following exception which I am not able to resolve:
Error starting ApplicationContext. To display the conditions report re-run your application with 'debug' enabled.
2023-01-23 18:55:43.965 ERROR 8576 --- [ restartedMain] o.s.boot.SpringApplication : Application run failed
java.lang.IllegalStateException: Failed to execute CommandLineRunner
at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:771) ~[spring-boot-2.7.8.jar:2.7.8]
at org.springframework.boot.SpringApplication.callRunners(SpringApplication.java:752) ~[spring-boot-2.7.8.jar:2.7.8]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:314) ~[spring-boot-2.7.8.jar:2.7.8]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1303) ~[spring-boot-2.7.8.jar:2.7.8]
at org.springframework.boot.SpringApplication.run(SpringApplication.java:1292) ~[spring-boot-2.7.8.jar:2.7.8]
at com.akalanka.authsql.AuthSqlApplication.main(AuthSqlApplication.java:17) ~[classes/:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:na]
at java.base/jdk.internal.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:78) ~[na:na]
at java.base/jdk.internal.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:na]
at java.base/java.lang.reflect.Method.invoke(Method.java:567) ~[na:na]
at org.springframework.boot.devtools.restart.RestartLauncher.run(RestartLauncher.java:49) ~[spring-boot-devtools-2.7.8.jar:2.7.8]
Caused by: java.lang.NullPointerException: Cannot invoke "com.akalanka.authsql.entity.User.getRoles()" because "user" is null
at com.akalanka.authsql.service.UserServiceImpl.addRoleToUser(UserServiceImpl.java:43) ~[classes/:na]
at com.akalanka.authsql.service.UserServiceImpl$$FastClassBySpringCGLIB$$8e8300.invoke(<generated>) ~[classes/:na]
at org.springframework.cglib.proxy.MethodProxy.invoke(MethodProxy.java:218) ~[spring-core-5.3.25.jar:5.3.25]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.invokeJoinpoint(CglibAopProxy.java:793) ~[spring-aop-5.3.25.jar:5.3.25]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:163) ~[spring-aop-5.3.25.jar:5.3.25]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763) ~[spring-aop-5.3.25.jar:5.3.25]
at org.springframework.transaction.interceptor.TransactionInterceptor$1.proceedWithInvocation(TransactionInterceptor.java:123) ~[spring-tx-5.3.25.jar:5.3.25]
at org.springframework.transaction.interceptor.TransactionAspectSupport.invokeWithinTransaction(TransactionAspectSupport.java:388) ~[spring-tx-5.3.25.jar:5.3.25]
at org.springframework.transaction.interceptor.TransactionInterceptor.invoke(TransactionInterceptor.java:119) ~[spring-tx-5.3.25.jar:5.3.25]
at org.springframework.aop.framework.ReflectiveMethodInvocation.proceed(ReflectiveMethodInvocation.java:186) ~[spring-aop-5.3.25.jar:5.3.25]
at org.springframework.aop.framework.CglibAopProxy$CglibMethodInvocation.proceed(CglibAopProxy.java:763) ~[spring-aop-5.3.25.jar:5.3.25]
at org.springframework.aop.framework.CglibAopProxy$DynamicAdvisedInterceptor.intercept(CglibAopProxy.java:708) ~[spring-aop-5.3.25.jar:5.3.25]
at com.akalanka.authsql.service.UserServiceImpl$$EnhancerBySpringCGLIB$$301bb374.addRoleToUser(<generated>) ~[classes/:na]
at com.akalanka.authsql.AuthSqlApplication.lambda$run$0(AuthSqlApplication.java:33) ~[classes/:na]
at org.springframework.boot.SpringApplication.callRunner(SpringApplication.java:768) ~[spring-boot-2.7.8.jar:2.7.8]
... 10 common frames omitted
My code here, I have used CommandLineRunner to execute following code block.
#SpringBootApplication
public class AuthSqlApplication {
public static void main(String[] args) {
SpringApplication.run(AuthSqlApplication.class, args);
}
#Bean
CommandLineRunner run(UserService userService) {
return args -> {
userService.saveRole(new Role(null, "ROLE_USER"));
userService.saveRole(new Role(null, "ROLE_MANAGER"));
userService.saveRole(new Role(null, "ROLE_ADMIN"));
userService.saveRole(new Role(null, "ROLE_SUPER_ADMIN"));
userService.saveUser(new User(null, "John Travolta", "john", "1234", new ArrayList<>()));
userService.saveUser(new User(null, "Will Smith", "will", "1234", new ArrayList<>()));
userService.saveUser(new User(null, "Jim Carry", "jim", "1234", new ArrayList<>()));
userService.saveUser(new User(null, "Arnold Schwarzenegger", "arnold", "1234", new ArrayList<>()));
userService.addRoleToUser("john", "ROLE_USER");
userService.addRoleToUser("john", "ROLE_MANAGER");
userService.addRoleToUser("will", "ROLE_MANAGER");
userService.addRoleToUser("jim", "ROLE_ADMIN");
userService.addRoleToUser("arnold", "ROLE_SUPER_ADMIN");
userService.addRoleToUser("arnold", "ROLE_ADMIN");
userService.addRoleToUser("arnold", "ROLE_USER");
};
}
}
This is the xml file related to my scenario.
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>2.7.8</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.akalanka</groupId>
<artifactId>auth-sql</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>auth-sql</name>
<description>Project for Spring Boot</description>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-security</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>com.mysql</groupId>
<artifactId>mysql-connector-j</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<optional>true</optional>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
<configuration>
<excludes>
<exclude>
<groupId>org.projectlombok</groupId>
<artifactId>lombok</artifactId>
</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
</project>