java.lang.IllegalAccessError: class org.casbin.adapter.JDBCBaseAdapter tried to access private field org.casbin.adapter.CasbinRule.ptype

[suryamukerjee1982]

I am creating a Spring Boot app with spring data jpa and with the policy persisted in PostgreSQL DB.

pom ---

<dependency>
            <groupId>org.casbin</groupId>
            <artifactId>casbin-spring-boot-starter</artifactId>
            <version>0.0.10</version>
        </dependency>
        <dependency>
  			<groupId>org.casbin</groupId>
  			<artifactId>jdbc-adapter</artifactId>
  			<version>2.2.2</version>
		</dependency>
        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-data-jpa</artifactId>
        </dependency>
        <dependency>
            <groupId>org.postgresql</groupId>
            <artifactId>postgresql</artifactId>
        </dependency>

application.properties

casbin.storeType=jdbc
spring.datasource.hikari.connectionTimeout=20000
spring.datasource.hikari.maximumPoolSize=5
## PostgreSQL
spring.datasource.url=jdbc:postgresql://localhost:5432/postgres
spring.jpa.properties.hibernate.default_schema=public
spring.datasource.username=postgres
spring.datasource.password=admin
logging.level.org.springframework=ERROR
spring.jpa.hibernate.ddl-auto=none
spring.datasource.initialization-mode=always
spring.datasource.platform=postgres
spring.jpa.properties.hibernate.id.new_generator_mappings=false
debug=true
logging.level.com.example.casbinspringbootdemo=de

Model - I am loading the model in my Main application class inside a Bean

    @Bean
    public Model getModel(){
    	Model model = new Model();
    	model.addDef("r", "r", "sub, obj, act");
    	model.addDef("p", "p", "sub, obj, act");
    	model.addDef("g", "g", "_, _");
    	model.addDef("e", "e", "some(where (p.eft == allow))");
    	model.addDef("m", "m", "g(r.sub, p.sub) && keyMatch2(r.obj, p.obj) && regexMatch(r.act, p.act)");
		return model;
    }

### In my Filter Class, I am doing the following for initializing the Enforcer with the Model and the Policy-

    @Autowired   
    private Model model;
    @Autowired   
    private HikariDataSource dataSource;

     public void doFilter(...){
               JDBCAdapter adapter = new JDBCAdapter(dataSource);
    	       Enforcer enforcer = new Enforcer(model, adapter);
    	       enforcer.addPolicy("sites_apps_admin", "/ws/policymanagement/policy", "POST");
}

### The application starts fine and the table casbin_rule gets created in my postgreSQL DB. But as soon as the code hits the enforcer.addPolicy() line, it throws an exception as follows -

java.lang.IllegalAccessError: class org.casbin.adapter.JDBCBaseAdapter tried to access private field org.casbin.adapter.CasbinRule.ptype (org.casbin.adapter.JDBCBaseAdapter and org.casbin.adapter.CasbinRule are in unnamed module of loader 'app')
	at org.casbin.adapter.JDBCBaseAdapter.lambda$loadPolicy$0(JDBCBaseAdapter.java:191) ~[jdbc-adapter-2.2.2.jar:na]
	at dev.failsafe.Functions.lambda$toCtxSupplier$10(Functions.java:236) ~[failsafe-3.2.3.jar:3.2.3]
	at dev.failsafe.Functions.lambda$get$0(Functions.java:46) ~[failsafe-3.2.3.jar:3.2.3]
	at dev.failsafe.internal.RetryPolicyExecutor.lambda$apply$0(RetryPolicyExecutor.java:74) ~[failsafe-3.2.3.jar:3.2.3]
	at dev.failsafe.SyncExecutionImpl.executeSync(SyncExecutionImpl.java:193) ~[failsafe-3.2.3.jar:3.2.3]
	at dev.failsafe.FailsafeExecutor.call(FailsafeExecutor.java:376) ~[failsafe-3.2.3.jar:3.2.3]
	at dev.failsafe.FailsafeExecutor.run(FailsafeExecutor.java:231) ~[failsafe-3.2.3.jar:3.2.3]
	at org.casbin.adapter.JDBCBaseAdapter.loadPolicy(JDBCBaseAdapter.java:182) ~[jdbc-adapter-2.2.2.jar:na]
	at org.casbin.adapter.JDBCAdapter.loadPolicy(JDBCAdapter.java:34) ~[jdbc-adapter-2.2.2.jar:na]
	at org.casbin.jcasbin.main.CoreEnforcer.loadPolicy(CoreEnforcer.java:211) ~[jcasbin-1.6.1.jar:na]
	at org.casbin.jcasbin.main.Enforcer.<init>(Enforcer.java:76) ~[jcasbin-1.6.1.jar:na]
	at com.casbindemo.auth.JCasbinAuthzFilter.authorized(JCasbinAuthzFilter.java:71) ~[classes/:na]
	at com.casbindemo.auth.JCasbinAuthzFilter.doFilter(JCasbinAuthzFilter.java:50) ~[classes/:na]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:100) ~[spring-web-5.3.19.jar:5.3.19]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.19.jar:5.3.19]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.springframework.web.filter.FormContentFilter.doFilterInternal(FormContentFilter.java:93) ~[spring-web-5.3.19.jar:5.3.19]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.19.jar:5.3.19]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.springframework.boot.actuate.metrics.web.servlet.WebMvcMetricsFilter.doFilterInternal(WebMvcMetricsFilter.java:96) ~[spring-boot-actuator-2.6.7.jar:2.6.7]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.19.jar:5.3.19]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:201) ~[spring-web-5.3.19.jar:5.3.19]
	at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:117) ~[spring-web-5.3.19.jar:5.3.19]
	at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:189) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:162) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:197) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:541) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:135) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:360) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:399) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:890) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1743) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.apache.tomcat.util.threads.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1191) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.apache.tomcat.util.threads.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:659) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) ~[tomcat-embed-core-9.0.62.jar:9.0.62]
	at java.base/java.lang.Thread.run(Thread.java:833) ~[na:na]

[casbin-bot]

@tangyang9464 @seriouszyx @elfisworking @fangzhengjin

[hsluoyz]

@tangyang9464

[tangyang9464]

@suryamukerjee1982 The easiest solution is to remove the casbin-spring-boot-starter dependency or jdbc-adapter.
Because the CasbinRule structure in casbin-spring-boot-starter and jdbc-adapter is conflicting. And It looks like you don't use casbin-spring-boot-starter at all. Currently casbin-spring-boot-starter has its own built-in jdbc-adapter, but it is not compatible, so you cannot import jdbc-adapter at the same time. This is a legacy problem, and we will fix it later.

[hsluoyz]

Fixed by: jcasbin/casbin-spring-boot-starter#68

@suryamukerjee1982 plz have a try