相关疑难解决方法(0)

经过调试,问题是mvc配置类EnableWebMvcConfiguration加载太早,servlet尚未加载.

org.springframework.beans.factory.BeanCreationException:在类路径资源中定义名为'resourceHandlerMapping'的bean时出错[org/springframework/boot/autoconfigure/web/servlet/WebMvcAutoConfiguration $ EnableWebMvcConfiguration.class]:通过工厂方法进行的Bean实例化失败; 嵌套异常是org.springframework.beans.BeanInstantiationException:无法实例化[org.springframework.web.servlet.HandlerMapping]:工厂方法'resourceHandlerMapping'抛出异常; 嵌套异常是java.lang.IllegalStateException:没有在org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:587)设置的ServletContext~ [spring-beans-5.0.4.RELEASE.jar:5.0.4 .RELEASE] org.springframework.beans上的org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1250)~ [spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE] .factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1099)〜[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE] at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(在Org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:502)〜[spring]的AbstractAutowireCapableBeanFactory.java:545)~ [spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE] -beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]在org.springframework.beans.factory.support.AbstractBeanFactory.lambda $ doGetBean $ 0(AbstractBeanFactory.java:312)〜[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE] at org.springframework.beans.factory.support.AbstractBeanFactory $$ Lambda $ 125/98506158.getObject(Unknown Source)〜[na:na] at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:228 )〜[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE]在org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:310)〜[spring-beans-5.0. 4.RELEASE.jar:5.0.4.RELEASE]在org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:200)〜[spring-beans-5.0.4.RELEASE.jar:5.0.4 .rELEASE] org.springframework.context上的org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:760)~ [spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE] .support.Abs org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:549)中的tractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:868)〜[spring-context-5.0.4.RELEASE.jar:5.0.4.RELEASE]〜 [spring-context-5.0.4.RELEASE.jar:5.0.4.RELEASE]在org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:140)〜[spring-boot-2.0. 0.RC2.jar:2.0.0.RC2] org.springframework.boot.SpringApplication.refresh(SpringApplication.java:752)[spring-boot-2.0.0.RC2.jar:2.0.0.RC2] at org .springframework.boot.SpringApplication.refreshContext(SpringApplication.java:388)[spring-boot-2.0.0.RC2.jar:2.0.0.RC2] org.springframework.boot.SpringApplication.run(SpringApplication.java:327 )[spring-boot-2.0.0.RC2.jar:2.0.0.RC2] org.springframework.boot.SpringApplication.run(SpringApplication.java:1246)[spring-boot-2.0.0.RC2.jar: 2.0.0.RC2]在org.springframework.boot.SpringApplica 在com.manway.BccApplication.main(BccApplication.java:16)[main /:na]的.prun(SpringApplication.java:1234)[spring-boot-2.0.0.RC2.jar:2.0.0.RC2]在sun.reflect.DelegatingMethodAccessorImpl的sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)〜[na:1.8.0_40] at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)〜[na:1.8.0_40].在org.springframework.boot.devtools的java.lang.reflect.Method.invoke(Method.java:497)〜[na:1.8.0_40]中调用(DelegatingMethodAccessorImpl.java:43)〜[na:1.8.0_40]. restart.RestartLauncher.run(RestartLauncher.java:49)[spring-boot-devtools-2.0.0.RC2.jar:2.0.0.RC2]引起:org.springframework.beans.BeanInstantiationException:无法实例化[org. springframework.web.servlet.HandlerMapping]:工厂方法'resourceHandlerMapping'抛出异常; 嵌套异常是java.lang.IllegalStateException:没有在org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185)〜[spring-beans-5.0.4.RELEASE.jar:5.0.4中设置的ServletContext .RELEASE]在org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:579)〜[spring-beans-5.0.4.RELEASE.jar:5.0.4.RELEASE] ... 24个常见框架省略:java.lang.IllegalStateException:在org.springframework.util.Assert.state(Assert.java:73)中没有设置ServletContext~ [spring-core-5.0.4.RELEASE.jar:5.0.4.RELEASE] org.springframework.web.servlet.config.annotation.WebMvcConfigurationSupport.resourceHandlerMapping(WebMvcConfigurationSupport.java:485)〜[spring-webmvc-5.0.4.RELEASE.jar:5.0.4.RELEASE] org.springframework.boot. autoconfigure.web.servlet.WebMvcAutoConfiguration $ EnableWebMvcConfiguration $$ EnhancerBySpringCGLIB $$ 5de64506.CGLIB $ resourceHandlerMapping $ 40()〜[spring-boot-autoconf 在org.springframework.boot.autoconfigure.web.servlet.WebMvcAutoConfiguration $ EnableNetMvcConfiguration $$ EnhancerBySpringCGLIB $$ 5de64506 $$ FastClassBySpringCGLIB $$ …

当我尝试使用AnnotationConfigApplicationContextclass 基于Spring 5运行我的应用程序时，出现异常No ServletContext set。

这是我的主要方法：

public class Run {

    public static void main(String[] args) {
        AnnotationConfigApplicationContext context = new AnnotationConfigApplicationContext();

        context.register(AppConfig.class);
        context.register(WebConfig.class);
        context.register(WebAppInitializer.class);
        context.refresh();

        MainService mainService = (MainService ) context.getBean("mainService ");
        mainService.loadData();
    }

}

AppConfig 定义transactionManager和sessionFactory bean：

@PropertySource("classpath:hibernate.properties")
@EnableTransactionManagement
@Configuration
@ComponentScan(basePackages = {"com.tk"})
@ComponentScans(value = { @ComponentScan("com.tk.spring4App.service"),
                          @ComponentScan("com.tk.spring4App.dao") })
public class AppConfig {

    @Autowired
    private Environment env;

    @Bean
    public LocalSessionFactoryBean getSessionFactory() {
        LocalSessionFactoryBean factoryBean = new LocalSessionFactoryBean();

        Properties props = new Properties();
        // Setting JDBC …