英文:
Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/wabSpring]]
问题
我正试图在Tomcat上启动Spring Boot应用程序。为此，我在Tomcat上部署了WAR文件，但我遇到了`Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/wabSpring]]`错误。我在谷歌上搜索了这个问题，但没有解决方案适用于我。请告诉我为什么会出现这个错误。
我使用的是Tomcat 8.5和Spring版本2.0.6。
**WebAppInitializer.java**
public class WebAppInitializer implements WebApplicationInitializer {
@Override
public void onStartup(ServletContext container) throws ServletException
{
AnnotationConfigWebApplicationContext context = new
AnnotationConfigWebApplicationContext();
context.register(AppConfig.class);
context.setServletContext(container);
ServletRegistration.Dynamic servlet =
container.addServlet("dispatcher", new
DispatcherServlet(context));
servlet.setLoadOnStartup(1);
servlet.addMapping("/");
}
}
**AppConfig.java**
@Configuration
@EnableWebMvc
@ComponentScan(basePackages = { "com.springboot.wabit.*" })
public class AppConfig implements WebMvcConfigurer {
@Autowired
private WebFlowConfig webFlowConfig;
public void addViewControllers(ViewControllerRegistry registry) {
registry.addViewController("/").setViewName("index");
}
@Bean
public ViewResolver viewResolver() {
InternalResourceViewResolver resolver = new
InternalResourceViewResolver();
resolver.setViewClass(JstlView.class);
resolver.setPrefix("/WEB-INF/views/");
resolver.setSuffix(".jsp");
return resolver;
}
@Bean(name = "multipartResolver")
public StandardServletMultipartResolver resolver() {
return new StandardServletMultipartResolver();
}
@Bean(name = "multipartResolver")
public CommonsMultipartResolver multipartResolver() {
CommonsMultipartResolver multipartResolver = new
CommonsMultipartResolver();
multipartResolver.setMaxUploadSize(2000000);
return multipartResolver;
}
@Bean
public FlowHandlerAdapter flowHandlerAdapter() {
FlowHandlerAdapter handlerAdapter = new FlowHandlerAdapter();
handlerAdapter.setFlowExecutor(this.webFlowConfig.flowExecutor());
handlerAdapter.setSaveOutputToFlashScopeOnRedirect(true);
return handlerAdapter;
}
@Bean
public FlowHandlerMapping flowHandlerMapping() {
FlowHandlerMapping handlerMapping = new FlowHandlerMapping();
handlerMapping.setOrder(-1);
handlerMapping.setFlowRegistry(this.webFlowConfig.flowRegistry());
return handlerMapping;
}
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer
configurer) {
configurer.enable();
}
@Override
public void addCorsMappings(CorsRegistry registry) {
registry.addMapping("/**")
.allowedOrigins("*")
.allowedMethods("HEAD", "GET", "PUT", "POST", "DELETE", "PATCH");
}
}
**WebFlowConfig.java**
@Configuration
@ComponentScan(basePackages = { "com.springboot.wabit.*" })
public class WebFlowConfig extends AbstractFlowConfiguration {
@Autowired
private AppConfig AppConfig;
@Bean
public FlowExecutor flowExecutor() {
return
getFlowExecutorBuilder(flowRegistry()).addFlowExecutionListener(new
SecurityFlowExecutionListener(), "*")
.build();
}
@Bean
public FlowDefinitionRegistry flowRegistry() {
return getFlowDefinitionRegistryBuilder().setBasePath("/WEB-
INF/views/flows")
.addFlowLocationPattern("/**/*-flow.xml").build();
}
@Bean
public FlowBuilderServices flowBuilderServices() {
return
getFlowBuilderServicesBuilder().
setViewFactoryCreator(mvcViewFactoryCreator())
.setValidator(validator()).setDevelopmentMode(true).build();
}
@Bean
public MvcViewFactoryCreator mvcViewFactoryCreator() {
MvcViewFactoryCreator factoryCreator = new MvcViewFactoryCreator();
factoryCreator.setViewResolvers(Collections.singletonList
(this.AppConfig.viewResolver()));
factoryCreator.setUseSpringBeanBinding(true);
return factoryCreator;
}
@Bean
public LocalValidatorFactoryBean validator() {
return new LocalValidatorFactoryBean();
}
}
**web.xml**
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">
<display-name>Archetype Created Web Application</display-name>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-
class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>throwExceptionIfNoHandlerFound</param-name>
<param-value>true</param-value>
</init-param>
<multipart-config>
<max-file-size>2097152</max-file-size>
<max-request-size>4194304</max-request-size>
<file-size-threshold>1048576</file-size-threshold>
</multipart-config>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/spring-security.xml
</param-value>
</context-param>
<filter>
<filter-name>springSecurityFilterChain</filter-name>
<filter-
class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
<filter-name>springSecurityFilterChain</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
**dispatcher.xml**
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:wf="http://www.springframework.org/schema/webflow-config"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/webflow-config
http://www.springframework.org/schema/webflow-config/spring-webflow-
config.xsd">
<context:component-s
<details>
<summary>英文:</summary>
I am trying to start spring boot app on tomcat.For that I deployed war file on tomcat, But I am getting `Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/wabSpring]]`. I search for this on google but no solution worked for me. Please tell me why I am getting this error.
I am using tomcat 8.5 and spring version 2.0.6
**WebAppInitializer.java**
public class WebAppInitializer implements WebApplicationInitializer {
@Override
public void onStartup(ServletContext container) throws ServletException
{
AnnotationConfigWebApplicationContext context = new
AnnotationConfigWebApplicationContext();
context.register(AppConfig.class);
context.setServletContext(container);
ServletRegistration.Dynamic servlet =
container.addServlet("dispatcher", new
DispatcherServlet(context));
servlet.setLoadOnStartup(1);
servlet.addMapping("/");
}
}
**AppConfig.java**
@Configuration
@EnableWebMvc
@ComponentScan(basePackages = { "com.springboot.wabit.*" })
public class AppConfig implements WebMvcConfigurer {
@Autowired
private WebFlowConfig webFlowConfig;
public void addViewControllers(ViewControllerRegistry registry) {
registry.addViewController("/").setViewName("index");
}
@Bean
public ViewResolver viewResolver() {
InternalResourceViewResolver resolver = new
InternalResourceViewResolver();
resolver.setViewClass(JstlView.class);
resolver.setPrefix("/WEB-INF/views/");
resolver.setSuffix(".jsp");
return resolver;
}
@Bean(name = "multipartResolver")
public StandardServletMultipartResolver resolver() {
return new StandardServletMultipartResolver();
}
@Bean(name = "multipartResolver")
public CommonsMultipartResolver multipartResolver() {
CommonsMultipartResolver multipartResolver = new
CommonsMultipartResolver();
multipartResolver.setMaxUploadSize(2000000);
return multipartResolver;
}
@Bean
public FlowHandlerAdapter flowHandlerAdapter() {
FlowHandlerAdapter handlerAdapter = new FlowHandlerAdapter();
handlerAdapter.setFlowExecutor(this.webFlowConfig.flowExecutor());
handlerAdapter.setSaveOutputToFlashScopeOnRedirect(true);
return handlerAdapter;
}
@Bean
public FlowHandlerMapping flowHandlerMapping() {
FlowHandlerMapping handlerMapping = new FlowHandlerMapping();
handlerMapping.setOrder(-1);
handlerMapping.setFlowRegistry(this.webFlowConfig.flowRegistry());
return handlerMapping;
}
@Override
public void configureDefaultServletHandling(DefaultServletHandlerConfigurer
configurer) {
configurer.enable();
}
@Override
public void addCorsMappings(CorsRegistry registry) {
registry.addMapping("/**")
.allowedOrigins("*")
.allowedMethods("HEAD", "GET", "PUT", "POST", "DELETE", "PATCH");
}
}
**WebFlowConfig.java**
@Configuration
@ComponentScan(basePackages = { "com.springboot.wabit.*" })
public class WebFlowConfig extends AbstractFlowConfiguration {
@Autowired
private AppConfig AppConfig;
@Bean
public FlowExecutor flowExecutor() {
return
getFlowExecutorBuilder(flowRegistry()).addFlowExecutionListener(new
SecurityFlowExecutionListener(), "*")
.build();
}
@Bean
public FlowDefinitionRegistry flowRegistry() {
return getFlowDefinitionRegistryBuilder().setBasePath("/WEB-
INF/views/flows")
.addFlowLocationPattern("/**/*-flow.xml").build();
}
@Bean
public FlowBuilderServices flowBuilderServices() {
return
getFlowBuilderServicesBuilder().
setViewFactoryCreator(mvcViewFactoryCreator())
.setValidator(validator()).setDevelopmentMode(true).build();
}
@Bean
public MvcViewFactoryCreator mvcViewFactoryCreator() {
MvcViewFactoryCreator factoryCreator = new MvcViewFactoryCreator();
factoryCreator.setViewResolvers(Collections.singletonList
(this.AppConfig.viewResolver()));
factoryCreator.setUseSpringBeanBinding(true);
return factoryCreator;
}
@Bean
public LocalValidatorFactoryBean validator() {
return new LocalValidatorFactoryBean();
}
}
**web.xml**
<web-app xmlns="http://xmlns.jcp.org/xml/ns/javaee"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee
http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">
<display-name>Archetype Created Web Application</display-name>
<servlet>
<servlet-name>dispatcher</servlet-name>
<servlet-
class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<init-param>
<param-name>throwExceptionIfNoHandlerFound</param-name>
<param-value>true</param-value>
</init-param>
<multipart-config>
<max-file-size>2097152</max-file-size>
<max-request-size>4194304</max-request-size>
<file-size-threshold>1048576</file-size-threshold>
</multipart-config>
</servlet>
<servlet-mapping>
<servlet-name>dispatcher</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<context-param>
<param-name>contextConfigLocation</param-name>
<param-value>
/WEB-INF/spring-security.xml
</param-value>
</context-param>
<filter>
<filter-name>springSecurityFilterChain</filter-name>
<filter-
class>org.springframework.web.filter.DelegatingFilterProxy</filter-class>
</filter>
<filter-mapping>
<filter-name>springSecurityFilterChain</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>
**dispatcher.xml**
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:context="http://www.springframework.org/schema/context"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:wf="http://www.springframework.org/schema/webflow-config"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="
http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc.xsd
http://www.springframework.org/schema/webflow-config
http://www.springframework.org/schema/webflow-config/spring-webflow-
config.xsd">
<context:component-scan
base-package="com.springboot.wabit" />
<bean id="viewResolver"
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<property name="prefix" value="/WEB-INF/views/" />
<property name="suffix" value=".jsp" />
</bean>
<bean id="multipartResolver"
class="org.springframework.web.multipart.
support.StandardServletMultipartResolver" />
<mvc:annotation-driven />
<mvc:resources location="/assets/"
mapping="/resources/**" />
<wf:flow-executor id="flowExecutor"
flow-registry="flowRegistry" />
<wf:flow-registry id="flowRegistry"
base-path="/WEB-INF/views/flows"
flow-builder-services="flowBuilderServices">
<wf:flow-location-pattern
value="/**/*-flow.xml" />
</wf:flow-registry>
<wf:flow-builder-services
id="flowBuilderServices" view-factory-creator="viewFactoryCreator"
validator="validator" />
<bean
class="org.springframework.webflow.mvc.servlet.FlowHandlerAdapter">
<property name="flowExecutor" ref="flowExecutor" />
</bean>
<bean
class="org.springframework.webflow.mvc.servlet.FlowHandlerMapping">
<property name="flowRegistry" ref="flowRegistry" />
<property name="order" value="-1" />
</bean>
<bean id="viewFactoryCreator"
class="org.springframework.webflow.mvc.builder.MvcViewFactoryCreator">
<property name="viewResolvers" ref="viewResolver" />
</bean>
<bean id="validator"
class="org.springframework.validation.
beanvalidation.LocalValidatorFactoryBean" />
</beans>
**pom.xml**
<?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> com.springboot </groupId>
<artifactId> wabit </artifactId>
<version> 0.0.1-SNAPSHOT </version>
<packaging> war </packaging>
<name>wabit</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.6.RELEASE</version>
<relativePath /> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-
8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-rest</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web-services</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.webflow</groupId>
<artifactId>spring-webflow</artifactId>
<version>2.5.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.13</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<scope>provided</scope>
</dependency>
<!-- database connection pooling -->
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
<version>2.1.1</version>
<exclusions>
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.apache.tomcat.embed</groupId>
<artifactId>tomcat-embed-jasper</artifactId>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.1</version>
</dependency>
<dependency>
<groupId>org.javassist</groupId>
<artifactId>javassist</artifactId>
<version>3.27.0-GA</version>
</dependency>
<dependency>
<groupId>commons-digester</groupId>
<artifactId>commons-digester</artifactId>
<version>2.1</version>
</dependency>
<dependency>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-shade-plugin</artifactId>
<version>3.1.1</version>
</dependency>
</dependencies>
<build>
<finalName>wabSpring</finalName>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
**Log**
*Oct-2020 11:26:03.558 SEVERE [http-nio-8080-exec-52] org.apache.catalina.core.ContainerBase.addChildInternal ContainerBase.addChild: start:
org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/wabSpring]]
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:743)
at org.apache.catalina.core.ContainerBase.addChild(ContainerBase.java:719)
at org.apache.catalina.core.StandardHost.addChild(StandardHost.java:705)
at org.apache.catalina.startup.HostConfig.deployWAR(HostConfig.java:970)
at org.apache.catalina.startup.HostConfig.deployApps(HostConfig.java:492)
at org.apache.catalina.startup.HostConfig.check(HostConfig.java:1634)
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:286)
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:1565)
at org.apache.catalina.manager.HTMLManagerServlet.upload(HTMLManagerServlet.java:289)
at org.apache.catalina.manager.HTMLManagerServlet.doPost(HTMLManagerServlet.java:207)
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:52)
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.SetCharacterEncodingFilter.doFilter(SetCharacterEncodingFilter.java:109)
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:199)
at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:97)
at org.apache.catalina.authenticator.AuthenticatorBase.invoke(AuthenticatorBase.java:668)
at org.apache.catalina.valves.RequestFilterValve.process(RequestFilterValve.java:348)
at org.apache.catalina.valves.RemoteAddrValve.invoke(RemoteAddrValve.java:52)
at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:143)
at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:81)
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:616)
at org.apache.coyote.AbstractProcessorLight.process(AbstractProcessorLight.java:65)
at org.apache.coyote.AbstractProtocol$ConnectionHandler.process(AbstractProtocol.java:818)
at org.apache.tomcat.util.net.NioEndpoint$SocketProcessor.doRun(NioEndpoint.java:1626)
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: java.lang.NullPointerException
at com.springboot.wabit.config.WebAppInitializer.onStartup(WebAppInitializer.java:26)
at org.springframework.web.SpringServletContainerInitializer.onStartup(SpringServletContainerInitializer.java:172)
at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5144)
at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:183)
... 48 more*
Is there anything I need to change in WebAppInitializer file? My apllication start on tomcat if I do not include dispatcher-servlet.xml file, but I dont think thats good way to start the app.
</details>
# 答案1
**得分**: 1
```java
@Configuration
public class AppConfig implements WebMvcConfigurer {
private final WebFlowConfig webFlowConfig;
public AppConfig(WebFlowConfig webFlowConfig) {
this.webFlowConfig = webFlowConfig;
}
public void addViewControllers(ViewControllerRegistry registry) {
registry.addViewController("/").setViewName("index");
}
@Bean
public FlowHandlerAdapter flowHandlerAdapter() {
FlowHandlerAdapter handlerAdapter = new FlowHandlerAdapter();
handlerAdapter.setFlowExecutor(this.webFlowConfig.flowExecutor());
handlerAdapter.setSaveOutputToFlashScopeOnRedirect(true);
return handlerAdapter;
}
@Bean
public FlowHandlerMapping flowHandlerMapping() {
FlowHandlerMapping handlerMapping = new FlowHandlerMapping();
handlerMapping.setOrder(-1);
handlerMapping.setFlowRegistry(this.webFlowConfig.flowRegistry());
return handlerMapping;
}
}
@Configuration
public class WebFlowConfig extends AbstractFlowConfiguration {
@Bean
public FlowExecutor flowExecutor() {
return getFlowExecutorBuilder(flowRegistry())
.addFlowExecutionListener(new SecurityFlowExecutionListener(), "*")
.build();
}
@Bean
public FlowDefinitionRegistry flowRegistry() {
return getFlowDefinitionRegistryBuilder()
.setBasePath("/WEB-INF/views/flows")
.addFlowLocationPattern("/**/*-flow.xml")
.build();
}
@Bean
public FlowBuilderServices flowBuilderServices(MvcViewFactoryCreator viewFactoryCreator, Validator validator) {
return getFlowBuilderServicesBuilder()
.setViewFactoryCreator(viewFactoryCreator)
.setValidator(validator)
.setDevelopmentMode(true)
.build();
}
@Bean
public MvcViewFactoryCreator mvcViewFactoryCreator(List<ViewResolver> viewResolvers) {
MvcViewFactoryCreator factoryCreator = new MvcViewFactoryCreator();
factoryCreator.setViewResolvers(viewResolvers);
factoryCreator.setUseSpringBeanBinding(true);
return factoryCreator;
}
}
@SpringBootApplication
public class YourApplication extends SpringBootServletInitializer {
public static void main(String[] args) throws Exception {
SpringApplication.run(YourApplication.class, args);
}
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
return builder.sources(YourApplication.class);
}
}
spring.mvc.view.prefix=/WEB-INF/views/
spring.mvc.view.suffix=.jsps
spring.servlet.multipart.maxFileSize=2MB
Please note that I've provided the translated Java code, along with the properties content. If you have any questions or need further assistance, feel free to ask.
英文:
- Delete your
web.xml - Delete your
WebAppInitializer - Delete your
dispatcher.xml - Remove
@CompoentScanfrom yourWebFlowConfig - Cleanup your
AppConfig(only leave the WebFlow configuration stuff) - Put properties in your
application.properties - Let your
@SpringBootApplicationextendSpringBootServletInitializer - Build and deploy.
Your AppConfig does too much and disables Spring Boot auto-config only leave the WebFlow configuration.
@Configuration
public class AppConfig implements WebMvcConfigurer {
private final WebFlowConfig webFlowConfig;
public AppConfig(WebFlowConfig webFlowConfig) {
this.webFlowConfig=webFlowConfig;
}
public void addViewControllers(ViewControllerRegistry registry) {
registry.addViewController("/").setViewName("index");
}
@Bean
public FlowHandlerAdapter flowHandlerAdapter() {
FlowHandlerAdapter handlerAdapter = new FlowHandlerAdapter();
handlerAdapter.setFlowExecutor(this.webFlowConfig.flowExecutor());
handlerAdapter.setSaveOutputToFlashScopeOnRedirect(true);
return handlerAdapter;
}
@Bean
public FlowHandlerMapping flowHandlerMapping() {
FlowHandlerMapping handlerMapping = new FlowHandlerMapping();
handlerMapping.setOrder(-1);
handlerMapping.setFlowRegistry(this.webFlowConfig.flowRegistry());
return handlerMapping;
}
}
Your `
@Configuration
public class WebFlowConfig extends AbstractFlowConfiguration {
@Bean
public FlowExecutor flowExecutor() {
return
getFlowExecutorBuilder(flowRegistry()).addFlowExecutionListener(new
SecurityFlowExecutionListener(), "*")
.build();
}
@Bean
public FlowDefinitionRegistry flowRegistry() {
return getFlowDefinitionRegistryBuilder().setBasePath("/WEB-
INF/views/flows")
.addFlowLocationPattern("/**/*-flow.xml").build();
}
@Bean
public FlowBuilderServices flowBuilderServices(MvcViewFactoryCreator viewFactoryCreator, Validator validator) {
return
getFlowBuilderServicesBuilder().
setViewFactoryCreator(viewFactoryCreator)
.setValidator(validator).setDevelopmentMode(true).build();
}
@Bean
public MvcViewFactoryCreator mvcViewFactoryCreator(List<ViewResolver> viewResolvers) {
MvcViewFactoryCreator factoryCreator = new MvcViewFactoryCreator();
factoryCreator.setViewResolvers(viewResolvers);
factoryCreator.setUseSpringBeanBinding(true);
return factoryCreator;
}
}
You already should have an @SpringBootApplication annotated class, if you don't create it and place it in com.springboot.wabit (as I assume that is your top-level package) and have it extend SpringBootServletInitializer. As explained as well in the official documentation.
@SpringBootApplication
public class YourApplication extends SpringBootServletInitializer {
public static void main(String[] args) throws Exception {
SpringApplication.run(YourApplication.class, args);
}
@Override
protected SpringApplicationBuilder configure(SpringApplicationBuilder builder) {
return builder.sources(YourApplication.class);
}
}
Now as you removed some beans from the AppConfig class you will need to add some properties to the application.properties to achieve the same.
spring.mvc.view.prefix=/WEB-INF/views/
spring.mvc.view.suffix=.jsps
spring.servlet.multipart.maxFileSize=2MB
Finally your dependencies are a bit of a mess you don't need the servlet-api, javaassist and maven-shade dependencies. Either you don't need them or they are already included in the spring-boot-starter-* projects you import.
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