流口水不会工作
Drools won't working
我对 Drools 有一些疑问。
在我的 rule.drl 文件中我有这个规则，检查工作内存中是否存在文章
rule "rule-2"
//include attributes such as "salience" here...
agenda-group "article-numbers"
when
//condition
exists (Article())
then
System.out.println("bbbbb");
//actions
end
并且在 Java class 我有方法
public void orderArticles(Article a){
KieSession kieSession = kieContainer.newKieSession("sesija");
kieSession.insert(a);
kieSession.getAgenda().getAgendaGroup("article-numbers").setFocus();
kieSession.fireAllRules();
ar.updateBrojArtikala(a);
ar.updateDodatiArtikle(a);
System.out.println(a);
kieSession.dispose();
}
我正在访问 Drools，并在工作中插入文章 memory.But 即使使用这个简单的规则，我仍然收到以下错误：
java.lang.StringIndexOutOfBoundsException: String index out of range: -15
at java.lang.String.substring(String.java:1967) ~[na:1.8.0_121]
at org.drools.compiler.rule.builder.dialect.DialectUtil.parseModifiedProperties(DialectUtil.java:707) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.rule.builder.dialect.DialectUtil.rewriteModifyDescr(DialectUtil.java:640) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.rule.builder.dialect.DialectUtil.rewriteDescr(DialectUtil.java:581) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.rule.builder.dialect.DialectUtil.fixBlockDescr(DialectUtil.java:162) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.rule.builder.dialect.DialectUtil.fixBlockDescr(DialectUtil.java:120) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.rule.builder.dialect.asm.AbstractASMConsequenceBuilder.consequenceContext(AbstractASMConsequenceBuilder.java:57) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.rule.builder.dialect.asm.AbstractASMConsequenceBuilder.build(AbstractASMConsequenceBuilder.java:33) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.rule.builder.RuleBuilder.build(RuleBuilder.java:116) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.addRule(KnowledgeBuilderImpl.java:1820) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.compileRules(KnowledgeBuilderImpl.java:1111) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.compileAllRules(KnowledgeBuilderImpl.java:989) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.buildRules(CompositeKnowledgeBuilderImpl.java:264) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.buildPackages(CompositeKnowledgeBuilderImpl.java:122) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.build(CompositeKnowledgeBuilderImpl.java:105) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.kie.builder.impl.AbstractKieModule.buildKnowledgePackages(AbstractKieModule.java:244) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.kie.builder.impl.KieContainerImpl.createKieBase(KieContainerImpl.java:561) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.kie.builder.impl.KieContainerImpl.getKieBase(KieContainerImpl.java:524) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieSession(KieContainerImpl.java:687) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieSession(KieContainerImpl.java:655) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at rs.ac.uns.ftn.informatika.rest.service.ArticlesDroolsService.orderArticles(ArticlesDroolsService.java:36) ~[classes/:na]
at rs.ac.uns.ftn.informatika.rest.controller.SalesmanController.orderArticle(SalesmanController.java:65) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_121]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_121]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_121]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_121]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:114) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:648) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) ~[tomcat-embed-websocket-8.5.5.jar:8.5.5]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:89) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:108) [tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) [tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) [tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349) [tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:784) [tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:802) [tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1410) [tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.5.jar:8.5.5]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_121]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_121]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.5.jar:8.5.5]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_121]
意思是我正在访问字符串的索引 -15，而我根本不这样做（！）
当我调试时，它总是停在
KieSession kieSession = kieContainer.newKieSession("sesija");
还有休息。
我觉得这很奇怪，我的设置或 kieContainer 似乎有问题..？有没有人经历过类似的事情？我认为我的设置很好，但我不知道可能是什么问题..有人吗对如何解决这个问题有什么建议吗？提前致谢！:)
当我问这是否是你的整个 DRL 时，你不应该撒谎 :P
您在评论中发布的应用程序包含 2 个充满规则的 .drl 文件。其中一条规则 - update price for whole bill-1- 在其右侧包含一个拼写错误。出于某种原因，Drools 在处理这一行并生成无法理解的错误时感到窒息。
我说的是下面这行：
modify($bill){setFinalPrice((int)(0.95*$bill.getFinalPrice())};
如果你注意的话，有 5 个左括号 ( 但只有 4 个右括号 )。
添加缺少的括号时，一切似乎都正常（或者至少规则编译正常）：
modify($bill){setFinalPrice((int)(0.95*$bill.getFinalPrice()))};
希望对您有所帮助，
我对 Drools 有一些疑问。 在我的 rule.drl 文件中我有这个规则，检查工作内存中是否存在文章
rule "rule-2"
//include attributes such as "salience" here...
agenda-group "article-numbers"
when
//condition
exists (Article())
then
System.out.println("bbbbb");
//actions
end
并且在 Java class 我有方法
public void orderArticles(Article a){
KieSession kieSession = kieContainer.newKieSession("sesija");
kieSession.insert(a);
kieSession.getAgenda().getAgendaGroup("article-numbers").setFocus();
kieSession.fireAllRules();
ar.updateBrojArtikala(a);
ar.updateDodatiArtikle(a);
System.out.println(a);
kieSession.dispose();
}
我正在访问 Drools，并在工作中插入文章 memory.But 即使使用这个简单的规则，我仍然收到以下错误：
java.lang.StringIndexOutOfBoundsException: String index out of range: -15
at java.lang.String.substring(String.java:1967) ~[na:1.8.0_121]
at org.drools.compiler.rule.builder.dialect.DialectUtil.parseModifiedProperties(DialectUtil.java:707) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.rule.builder.dialect.DialectUtil.rewriteModifyDescr(DialectUtil.java:640) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.rule.builder.dialect.DialectUtil.rewriteDescr(DialectUtil.java:581) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.rule.builder.dialect.DialectUtil.fixBlockDescr(DialectUtil.java:162) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.rule.builder.dialect.DialectUtil.fixBlockDescr(DialectUtil.java:120) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.rule.builder.dialect.asm.AbstractASMConsequenceBuilder.consequenceContext(AbstractASMConsequenceBuilder.java:57) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.rule.builder.dialect.asm.AbstractASMConsequenceBuilder.build(AbstractASMConsequenceBuilder.java:33) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.rule.builder.RuleBuilder.build(RuleBuilder.java:116) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.addRule(KnowledgeBuilderImpl.java:1820) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.compileRules(KnowledgeBuilderImpl.java:1111) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.builder.impl.KnowledgeBuilderImpl.compileAllRules(KnowledgeBuilderImpl.java:989) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.buildRules(CompositeKnowledgeBuilderImpl.java:264) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.buildPackages(CompositeKnowledgeBuilderImpl.java:122) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.builder.impl.CompositeKnowledgeBuilderImpl.build(CompositeKnowledgeBuilderImpl.java:105) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.kie.builder.impl.AbstractKieModule.buildKnowledgePackages(AbstractKieModule.java:244) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.kie.builder.impl.KieContainerImpl.createKieBase(KieContainerImpl.java:561) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.kie.builder.impl.KieContainerImpl.getKieBase(KieContainerImpl.java:524) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieSession(KieContainerImpl.java:687) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at org.drools.compiler.kie.builder.impl.KieContainerImpl.newKieSession(KieContainerImpl.java:655) ~[drools-compiler-6.5.0.Final.jar:6.5.0.Final]
at rs.ac.uns.ftn.informatika.rest.service.ArticlesDroolsService.orderArticles(ArticlesDroolsService.java:36) ~[classes/:na]
at rs.ac.uns.ftn.informatika.rest.controller.SalesmanController.orderArticle(SalesmanController.java:65) ~[classes/:na]
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method) ~[na:1.8.0_121]
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62) ~[na:1.8.0_121]
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43) ~[na:1.8.0_121]
at java.lang.reflect.Method.invoke(Method.java:498) ~[na:1.8.0_121]
at org.springframework.web.method.support.InvocableHandlerMethod.doInvoke(InvocableHandlerMethod.java:221) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.method.support.InvocableHandlerMethod.invokeForRequest(InvocableHandlerMethod.java:136) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.ServletInvocableHandlerMethod.invokeAndHandle(ServletInvocableHandlerMethod.java:114) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.invokeHandlerMethod(RequestMappingHandlerAdapter.java:827) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter.handleInternal(RequestMappingHandlerAdapter.java:738) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.servlet.mvc.method.AbstractHandlerMethodAdapter.handle(AbstractHandlerMethodAdapter.java:85) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doDispatch(DispatcherServlet.java:963) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.servlet.DispatcherServlet.doService(DispatcherServlet.java:897) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.processRequest(FrameworkServlet.java:970) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.servlet.FrameworkServlet.doPost(FrameworkServlet.java:872) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:648) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.springframework.web.servlet.FrameworkServlet.service(FrameworkServlet.java:846) ~[spring-webmvc-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at javax.servlet.http.HttpServlet.service(HttpServlet.java:729) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:230) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:52) ~[tomcat-embed-websocket-8.5.5.jar:8.5.5]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.springframework.web.filter.RequestContextFilter.doFilterInternal(RequestContextFilter.java:99) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.springframework.web.filter.HttpPutFormContentFilter.doFilterInternal(HttpPutFormContentFilter.java:89) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.springframework.web.filter.HiddenHttpMethodFilter.doFilterInternal(HiddenHttpMethodFilter.java:77) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.springframework.web.filter.CharacterEncodingFilter.doFilterInternal(CharacterEncodingFilter.java:197) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.springframework.web.filter.OncePerRequestFilter.doFilter(OncePerRequestFilter.java:107) ~[spring-web-4.3.3.RELEASE.jar:4.3.3.RELEASE]
at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:192) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:165) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:198) ~[tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:108) [tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:472) [tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:140) [tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) [tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:87) [tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:349) [tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:784) [tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:66) [tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:802) [tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1410) [tomcat-embed-core-8.5.5.jar:8.5.5]
at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49) [tomcat-embed-core-8.5.5.jar:8.5.5]
at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) [na:1.8.0_121]
at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) [na:1.8.0_121]
at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) [tomcat-embed-core-8.5.5.jar:8.5.5]
at java.lang.Thread.run(Thread.java:745) [na:1.8.0_121]
意思是我正在访问字符串的索引 -15，而我根本不这样做（！） 当我调试时，它总是停在
KieSession kieSession = kieContainer.newKieSession("sesija");
还有休息。 我觉得这很奇怪，我的设置或 kieContainer 似乎有问题..？有没有人经历过类似的事情？我认为我的设置很好，但我不知道可能是什么问题..有人吗对如何解决这个问题有什么建议吗？提前致谢！:)
当我问这是否是你的整个 DRL 时，你不应该撒谎 :P
您在评论中发布的应用程序包含 2 个充满规则的 .drl 文件。其中一条规则 - update price for whole bill-1- 在其右侧包含一个拼写错误。出于某种原因，Drools 在处理这一行并生成无法理解的错误时感到窒息。
我说的是下面这行：
modify($bill){setFinalPrice((int)(0.95*$bill.getFinalPrice())};
如果你注意的话，有 5 个左括号 ( 但只有 4 个右括号 )。
添加缺少的括号时，一切似乎都正常（或者至少规则编译正常）：
modify($bill){setFinalPrice((int)(0.95*$bill.getFinalPrice()))};
希望对您有所帮助，