使用多租戶 org.apache.catalina.startup.HostConfig.deployWAR 在 tomcat 中部署 war 文件部署時出錯

Question

對不起，我的英語不好，

我有以下代碼，使用 spring 引導 2.4 制作。 作為 Ide Eclipse 和 Spring 工具使用。 允許您從文件夾中取出名為 db1.properties db2.properties 等的三個文件。

        @Configuration
    public class MultitenantConfiguration {
        
        @Autowired
        private DataSourceProperties properties;
        
        @Bean
        @ConfigurationProperties(prefix="spring.datasource")
        public DataSource dataSource() {
            File[] files = Paths.get("src/main/resources/tenants").toFile().listFiles();
            Map<Object,Object> resolvedDataSources = new HashMap<>();
            
            for(File propertyFile : files) {
                Properties tenantProperties = new Properties();
                DataSourceBuilder dataSourceBuilder = DataSourceBuilder.create(this.getClass().getClassLoader());
                try {
                    tenantProperties.load(new FileInputStream(propertyFile));
                    
                    String tenantId = tenantProperties.getProperty("name");
                    
                    dataSourceBuilder.driverClassName(properties.getDriverClassName())
                    .url(tenantProperties.getProperty("datasource.url"))
                    .username(tenantProperties.getProperty("datasource.username"))
                    .password(tenantProperties.getProperty("datasource.password"));
                    
                    if(properties.getType() != null) {
                        dataSourceBuilder.type(properties.getType());
                    }
                    
                    resolvedDataSources.put(tenantId, dataSourceBuilder.build());
                    
                }catch (IOException e) {
                    e.printStackTrace();
    
                    return null;
                }
            
            }
            
            MultitenantDataSource dataSource = new MultitenantDataSource();
            dataSource.setDefaultTargetDataSource(defaultDataSource());
            dataSource.setTargetDataSources(resolvedDataSources);
            
            dataSource.afterPropertiesSet();
    
            return dataSource;
        }
        
        private DataSource defaultDataSource() {
            DataSourceBuilder dataSourceBuilder = DataSourceBuilder.create(this.getClass().getClassLoader())
                    .driverClassName(properties.getDriverClassName())
                    .url(properties.getUrl())
                    .username(properties.getUsername())
                    .password(properties.getPassword());
    
            if(properties.getType() != null) {
                dataSourceBuilder.type(properties.getType());
            }
    
            return dataSourceBuilder.build();
        }
    
    }

當我編譯我的項目時，我沒有錯誤。 但是當我在 tomcat 中部署它時，它會顯示以下內容

21 19:22:18.728 INFORMACIÓN [http-nio-8090-exec-62] org.apache.catalina.startup.HostConfig.deployWAR Despliegue del archivo [C:\Program Files\Apache Software Foundation\Tomcat 9.0\webapps\redlinev12v2-2.war] de la aplicación web
15-Jan-2021 19:22:26.087 INFORMACIÓN [http-nio-8090-exec-62] org.apache.jasper.servlet.TldScanner.scanJars Al menos un JAR, que se ha explorado buscando TLDs, aún no contenía TLDs. Activar historial de depuración para este historiador para una completa lista de los JARs que fueron explorados y de los que nos se halló TLDs. Saltarse JARs no necesarios durante la exploración puede dar lugar a una mejora de tiempo significativa en el arranque y compilación de JSP .
15-Jan-2021 19:22:30.588 GRAVE [http-nio-8090-exec-62] org.apache.catalina.startup.HostConfig.deployWAR Error durante el despliegue del archivo [C:\Program Files\Apache Software Foundation\Tomcat 9.0\webapps\redlinev12v2-2.war] de la aplicación web
    java.lang.IllegalStateException: Error starting child
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:720)
        at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:690)
        at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:706)
        at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:978)
        at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:493)
        at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1642)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.apache.tomcat.util.modeler.BaseModelMBean.invoke(BaseModelMBean.java:288)
        at com.sun.jmx.interceptor.DefaultMBeanServerInterceptor.invoke(Unknown Source)
        at com.sun.jmx.mbeanserver.JmxMBeanServer.invoke(Unknown Source)
        at org.apache.catalina.manager.ManagerServlet.check(ManagerServlet.java:1596)
        at org.apache.catalina.manager.HTMLManagerServlet.upload(HTMLManagerServlet.java:294)
        at org.apache.catalina.manager.HTMLManagerServlet.doPost(HTMLManagerServlet.java:212)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:652)
        at javax.servlet.http.HttpServlet.service(HttpServlet.java:733)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:231)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at org.apache.catalina.filters.CsrfPreventionFilter.doFilter(CsrfPreventionFilter.java:211)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at org.apache.catalina.filters.HttpHeaderSecurityFilter.doFilter(HttpHeaderSecurityFilter.java:126)
        at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:193)
        at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:166)
        at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:202)
        at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
        at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:667)
        at org.apache.catalina.valves.RequestFilterValve.process(RequestFilterValve.java:348)
        at org.apache.catalina.valves.RemoteAddrValve.invoke(RemoteAddrValve.java:53)
        at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
        at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:92)
        at org.apache.catalina.valves.AbstractAccessLogValve.invoke(AbstractAccessLogValve.java:690)
        at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:78)
        at org.apache.catalina.connector.CoyoteAdapter.service(CoyoteAdapter.java:343)
        at org.apache.coyote.http11.Http11Processor.service(Http11Processor.java:374)
        at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
        at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:888)
        at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1597)
        at org.apache.tomcat.util.net.SocketProcessorBase.run(SocketProcessorBase.java:49)
        at java.util.concurrent.ThreadPoolExecutor.runWorker(Unknown Source)
        at java.util.concurrent.ThreadPoolExecutor$Worker.run(Unknown Source)
        at org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
        at java.lang.Thread.run(Unknown Source)
    Caused by: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/redlinev12v2-2]]
        at org.apache.catalina.util.LifecycleBase.handleSubClassException(LifecycleBase.java:440)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:198)
        at org.apache.catalina.core.ContainerBase.addChildInternal(ContainerBase.java:717)
        ... 47 more
    Caused by: org.springframework.beans.factory.UnsatisfiedDependencyException: Error creating bean with name 'org.springframework.boot.autoconfigure.orm.jpa.HibernateJpaConfiguration': Unsatisfied dependency expressed through constructor parameter 0; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [com/softdelsur/redlinev12/MultitenantConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.sql.DataSource]: Factory method 'dataSource' threw exception; nested exception is java.lang.NullPointerException
        at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:800)
        at org.springframework.beans.factory.support.ConstructorResolver.autowireConstructor(ConstructorResolver.java:229)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.autowireConstructor(AbstractAutowireCapableBeanFactory.java:1356)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1206)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:571)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531)
        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:410)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1179)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:571)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531)
        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
        at org.springframework.context.support.AbstractApplicationContext.getBean(AbstractApplicationContext.java:1159)
        at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:913)
        at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:588)
        at org.springframework.boot.web.servlet.context.ServletWebServerApplicationContext.refresh(ServletWebServerApplicationContext.java:144)
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:767)
        at org.springframework.boot.SpringApplication.refresh(SpringApplication.java:759)
        at org.springframework.boot.SpringApplication.refreshContext(SpringApplication.java:426)
        at org.springframework.boot.SpringApplication.run(SpringApplication.java:326)
        at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.run(SpringBootServletInitializer.java:173)
        at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.createRootApplicationContext(SpringBootServletInitializer.java:153)
        at org.springframework.boot.web.servlet.support.SpringBootServletInitializer.onStartup(SpringBootServletInitializer.java:95)
        at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:174)
        at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5166)
        at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
        ... 48 more
    Caused by: org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'dataSource' defined in class path resource [com/softdelsur/redlinev12/MultitenantConfiguration.class]: Bean instantiation via factory method failed; nested exception is org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.sql.DataSource]: Factory method 'dataSource' threw exception; nested exception is java.lang.NullPointerException
        at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:658)
        at org.springframework.beans.factory.support.ConstructorResolver.instantiateUsingFactoryMethod(ConstructorResolver.java:486)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.instantiateUsingFactoryMethod(AbstractAutowireCapableBeanFactory.java:1336)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBeanInstance(AbstractAutowireCapableBeanFactory.java:1179)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:571)
        at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:531)
        at org.springframework.beans.factory.support.AbstractBeanFactory.lambda$doGetBean$0(AbstractBeanFactory.java:335)
        at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:234)
        at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:333)
        at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:208)
        at org.springframework.beans.factory.config.DependencyDescriptor.resolveCandidate(DependencyDescriptor.java:276)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.doResolveDependency(DefaultListableBeanFactory.java:1367)
        at org.springframework.beans.factory.support.DefaultListableBeanFactory.resolveDependency(DefaultListableBeanFactory.java:1287)
        at org.springframework.beans.factory.support.ConstructorResolver.resolveAutowiredArgument(ConstructorResolver.java:887)
        at org.springframework.beans.factory.support.ConstructorResolver.createArgumentArray(ConstructorResolver.java:791)
        ... 80 more
    Caused by: org.springframework.beans.BeanInstantiationException: Failed to instantiate [javax.sql.DataSource]: Factory method 'dataSource' threw exception; nested exception is java.lang.NullPointerException
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:185)
        at org.springframework.beans.factory.support.ConstructorResolver.instantiate(ConstructorResolver.java:653)
        ... 94 more
    Caused by: java.lang.NullPointerException
        at com.softdelsur.redlinev12.MultitenantConfiguration.dataSource(MultitenantConfiguration.java:34)
        at com.softdelsur.redlinev12.MultitenantConfiguration$$EnhancerBySpringCGLIB$$d986e6f.CGLIB$dataSource$0(<generated>)
        at com.softdelsur.redlinev12.MultitenantConfiguration$$EnhancerBySpringCGLIB$$d986e6f$$FastClassBySpringCGLIB$$266f86a6.invoke(<generated>)
        at org.springframework.cglib.proxy.MethodProxy.invokeSuper(MethodProxy.java:244)
        at org.springframework.context.annotation.ConfigurationClassEnhancer$BeanMethodInterceptor.intercept(ConfigurationClassEnhancer.java:331)
        at com.softdelsur.redlinev12.MultitenantConfiguration$$EnhancerBySpringCGLIB$$d986e6f.dataSource(<generated>)
        at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
        at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
        at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
        at java.lang.reflect.Method.invoke(Unknown Source)
        at org.springframework.beans.factory.support.SimpleInstantiationStrategy.instantiate(SimpleInstantiationStrategy.java:154)
        ... 95 more
15-Jan-2021 19:22:30.590 INFORMACIÓN [http-nio-8090-exec-62] org.apache.catalina.startup.HostConfig.deployWAR Deployment of web application archive [C:\Program Files\Apache Software Foundation\Tomcat 9.0\webapps\redlinev12v2-2.war] has finished in [11.862] ms

如果我評論 Bean 運行良好，我不知道如何前進，我試圖在另一個路徑中找到該文件，但我繼續以相同的方式繼續。 我希望你的幫助

Answer 1

通過更改查找配置文件的方式解決了問題

Map<Object,Object> resolvedDataSources = new HashMap<>();
        PathMatchingResourcePatternResolver resourceLoader = new PathMatchingResourcePatternResolver();
        try {
            Resource[] resources = resourceLoader.getResources("/tenants/*.properties");
            for (Resource resource : resources) {
                try{
                System.out.println("Este es el recurso: "+resource);
                Properties tenantProperties = new Properties();
                DataSourceBuilder dataSourceBuilder = DataSourceBuilder.create(this.getClass().getClassLoader());
                File templateFile = resource.getFile();
                
                tenantProperties.load(new FileInputStream(templateFile));
                String tenantId = tenantProperties.getProperty("name");
                
                dataSourceBuilder.driverClassName(properties.getDriverClassName())
                .url(tenantProperties.getProperty("datasource.url"))
                .username(tenantProperties.getProperty("datasource.username"))
                .password(tenantProperties.getProperty("datasource.password"));
                
                if(properties.getType() != null) {
                    dataSourceBuilder.type(properties.getType());
                }
                
                resolvedDataSources.put(tenantId, dataSourceBuilder.build());
                }catch (IOException e) {
                    System.out.println("Fallo al abrir los archivos de db");
                    e.printStackTrace();

                    return null;
                }
            }
            
        } catch (IOException e) {
            System.out.println("Archivo de configuración no encontrado");
            e.printStackTrace();
        }

使用 PathMatchingResourcePatternResolver 評論@dnault