incidente casuale Spring MVC thymeleaf

devo problema strano con Spring MVC e thymeleaf. Di quando in quando eseguo la mia applicazione web di tanto in tanto si verificano incidenti casuali. A volte tutto funziona bene, ma a volte mi ottenere qualcosa di simile:incidente casuale Spring MVC thymeleaf

javax.servlet.ServletException: Servlet.init() for servlet dispatcher threw exception 
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) 
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) 
    org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610) 
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537) 
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1085) 
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658) 
    org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:277) 
    org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2407) 
    org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2396) 
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) 
    java.lang.Thread.run(Thread.java:745) 
root cause 

org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'viewResolver' defined in com.myapp.configuration.WebConfiguration: Unsatisfied dependency expressed through constructor argument with index 0 of type [org.thymeleaf.spring4.SpringTemplateEngine]: : No qualifying bean of type [org.thymeleaf.spring4.SpringTemplateEngine] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {}; nested exception is org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.thymeleaf.spring4.SpringTemplateEngine] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {} 
    org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:749) 
    org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:464) 
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1111) 
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1006) 
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504) 
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) 
    org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) 
    org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) 
    org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) 
    org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) 
    org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:762) 
    org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757) 
    org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480) 
    org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:663) 
    org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:535) 
    org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:489) 
    org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) 
    javax.servlet.GenericServlet.init(GenericServlet.java:158) 
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) 
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) 
    org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610) 
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537) 
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1085) 
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658) 
    org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:277) 
    org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2407) 
    org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2396) 
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) 
    java.lang.Thread.run(Thread.java:745) 
root cause 

org.springframework.beans.factory.NoSuchBeanDefinitionException: No qualifying bean of type [org.thymeleaf.spring4.SpringTemplateEngine] found for dependency: expected at least 1 bean which qualifies as autowire candidate for this dependency. Dependency annotations: {} 
    org.springframework.beans.factory.support.DefaultListableBeanFactory.raiseNoSuchBeanDefinitionException(DefaultListableBeanFactory.java:1308) 
    org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1054) 
    org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:949) 
    org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:813) 
    org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:741) 
    org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:464) 
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1111) 
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1006) 
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:504) 
    org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) 
    org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) 
    org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) 
    org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) 
    org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) 
    org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:762) 
    org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757) 
    org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480) 
    org.springframework.web.servlet.FrameworkServlet.configureAndRefreshWebApplicationContext(FrameworkServlet.java:663) 
    org.springframework.web.servlet.FrameworkServlet.initWebApplicationContext(FrameworkServlet.java:535) 
    org.springframework.web.servlet.FrameworkServlet.initServletBean(FrameworkServlet.java:489) 
    org.springframework.web.servlet.HttpServletBean.init(HttpServletBean.java:136) 
    javax.servlet.GenericServlet.init(GenericServlet.java:158) 
    org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:501) 
    org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:79) 
    org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:610) 
    org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:537) 
    org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1085) 
    org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:658) 
    org.apache.coyote.http11.Http11AprProtocol$Http11ConnectionHandler.process(Http11AprProtocol.java:277) 
    org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.doRun(AprEndpoint.java:2407) 
    org.apache.tomcat.util.net.AprEndpoint$SocketProcessor.run(AprEndpoint.java:2396) 
    java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) 
    java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) 
    org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61) 
    java.lang.Thread.run(Thread.java:745)

E mi dice che non ho fagioli SpringTemplateEngine ma ce l'ho nella mia configurazione:

... 
imports 
... 
@Configuration 
@EnableWebMvc 
@ComponentScan("com.myapp.controllers") 
public class WebConfiguration extends WebMvcConfigurerAdapter { 

    private static final String TEMPLATE_RESOLVER_PREFIX = "/WEB-INF/templates/"; 
    private static final String TEMPLATE_RESOLVER_SUFFIX = ".html"; 
    private static final String TEMPLATE_RESOLVER_TEMPLATE_MODE = "HTML5"; 

    @Bean 
    public ViewResolver viewResolver(SpringTemplateEngine templateEngine) { 
     ThymeleafViewResolver viewResolver = new ThymeleafViewResolver(); 
     viewResolver.setTemplateEngine(templateEngine); 

     return viewResolver; 
    } 

    @Bean 
    public TemplateEngine templateEngine(TemplateResolver templateResolver) { 
     SpringTemplateEngine templateEngine = new SpringTemplateEngine(); 
     templateEngine.setTemplateResolver(templateResolver); 

     return templateEngine; 
    } 

    @Bean 
    public TemplateResolver templateResolver() { 
     TemplateResolver templateResolver = new ServletContextTemplateResolver(); 
     templateResolver.setPrefix(TEMPLATE_RESOLVER_PREFIX); 
     templateResolver.setSuffix(TEMPLATE_RESOLVER_SUFFIX); 
     templateResolver.setTemplateMode(TEMPLATE_RESOLVER_TEMPLATE_MODE); 

     return templateResolver; 
    } 

    @Override 
    public void configureDefaultServletHandling(DefaultServletHandlerConfigurer configurer) { 
     configurer. 
}

ho anche thymeleaf nella mia .pom:

<?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>groupId</groupId> 
    <artifactId>MyApp</artifactId> 
    <version>1.0-SNAPSHOT</version> 
    <packaging>war</packaging> 
    <name>MyApp</name> 

    <dependencies> 
     <!-- Spring --> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-context</artifactId> 
      <version>4.1.4.RELEASE</version> 
     </dependency> 

     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-webmvc</artifactId> 
      <version>4.1.4.RELEASE</version> 
     </dependency> 

     <!-- Spring Security --> 
     <dependency> 
      <groupId>org.springframework.security</groupId> 
      <artifactId>spring-security-core</artifactId> 
      <version>4.0.0.RELEASE</version> 
     </dependency> 

     <dependency> 
      <groupId>org.springframework.security</groupId> 
      <artifactId>spring-security-web</artifactId> 
      <version>4.0.0.RELEASE</version> 
     </dependency> 

     <dependency> 
      <groupId>org.springframework.security</groupId> 
      <artifactId>spring-security-config</artifactId> 
      <version>4.0.0.RELEASE</version> 
     </dependency> 

     <!-- Servlet --> 
     <dependency> 
      <groupId>javax.servlet</groupId> 
      <artifactId>servlet-api</artifactId> 
      <version>2.5</version> 
      <scope>provided</scope> 
     </dependency> 

     <!-- Thymleaf --> 
     <dependency> 
      <groupId>org.thymeleaf</groupId> 
      <artifactId>thymeleaf</artifactId> 
      <version>2.1.4.RELEASE</version> 
     </dependency> 

     <dependency> 
      <groupId>org.thymeleaf</groupId> 
      <artifactId>thymeleaf-spring4</artifactId> 
      <version>2.1.4.RELEASE</version> 
     </dependency> 

     <dependency> 
      <groupId>org.thymeleaf.extras</groupId> 
      <artifactId>thymeleaf-extras-springsecurity4</artifactId> 
      <version>2.1.2.RELEASE</version> 
     </dependency> 

    </dependencies> 

    <build> 
     <plugins> 
      <plugin> 
       <groupId>org.apache.maven.plugins</groupId> 
       <artifactId>maven-war-plugin</artifactId> 
       <version>2.5</version> 
       <configuration> 
        <failOnMissingWebXml>false</failOnMissingWebXml> 
       </configuration> 
      </plugin> 
     </plugins> 
    </build> 
</project>

La cosa più strana è che si blocca in modo totalmente casuale. Funziona bene, ma dopo un paio di build inizia a bloccarsi con ogni nuova build. Quando si avvia in modo anomalo rimuovo la directory "target" di maven build e invalido la cache e riavvia Idea IntelliJ. Hai idea di cosa c'è che non va?

PS. Uso IntellijIdea 13.1.6.

fonte

2015-05-03 Sayaki

Usi un web.xml e puoi mostrarcelo? Eseguire il debug della costruzione di 'TemplateEngine', è stato anche costruito? – Zarathustra

Forse stai colpendo qualche problema di dipendenza sottile.

E 'advised to declare inter-beans dependencies like this:

... 
imports 
... 
@Configuration 
@EnableWebMvc 
@ComponentScan("com.myapp.controllers") 
public class WebConfiguration extends WebMvcConfigurerAdapter { 

    private static final String TEMPLATE_RESOLVER_PREFIX = "/WEB-INF/templates/"; 
    private static final String TEMPLATE_RESOLVER_SUFFIX = ".html"; 
    private static final String TEMPLATE_RESOLVER_TEMPLATE_MODE = "HTML5"; 

    @Bean 
    public ViewResolver viewResolver() { 
     ThymeleafViewResolver viewResolver = new ThymeleafViewResolver(); 
     viewResolver.setTemplateEngine(templateEngine()); 

     return viewResolver; 
    } 

    @Bean 
    public TemplateEngine templateEngine() { 
     SpringTemplateEngine templateEngine = new SpringTemplateEngine(); 
     templateEngine.setTemplateResolver(templateResolver()); 

     return templateEngine; 
    } 

    @Bean 
    public TemplateResolver templateResolver() { 
     TemplateResolver templateResolver = new ServletContextTemplateResolver(); 
     templateResolver.setPrefix(TEMPLATE_RESOLVER_PREFIX); 
     templateResolver.setSuffix(TEMPLATE_RESOLVER_SUFFIX); 
     templateResolver.setTemplateMode(TEMPLATE_RESOLVER_TEMPLATE_MODE); 

     return templateResolver; 
    }

fonte

2015-05-11 11:04:29

funziona davvero! Non riesci nemmeno a immaginare quanto ti sia grato;) – Sayaki

Questo ha funzionato anche per me, ma devo apportare una modifica, restituire il tipo di metodo templateEngine che ho modificato da "TemplateEngine" a "SpringTemplateEngine" e funziona perfettamente per me. – asifaftab87

La prima cosa che mi piacerebbe verificare è che non hai più versioni della stessa libreria nel classpath, perché questo può causare problemi molto confuse.

Maven dovrebbe risolvere questo problema ma so che IDEA ha alcuni problemi con versioni di dipendenze in conflitto quando si utilizza Gradle, quindi potrebbe essere il caso anche per Maven.

Per verificare questo, espandere le librerie esterne "cartella" nella vista di progetto e verificare di avere una sola voce per ogni libreria.

fonte

2015-05-12 02:37:40 Raniz

incidente casuale Spring MVC thymeleaf

risposta

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