部署一个简单的Spring MVC应用程序（没有web.xml）后出现错误404

Question

我想学习一些完全基于注释的Spring MVC的基础知识。我从这个教程开始。

克隆存储库后

hg clone https://bitbucket.org/arnelism/snoutbook

和生成war文件

mvn package

INFORMATION: Starting Servlet Engine: Apache Tomcat/7.0.12
Sep 12, 2014 3:37:18 PM org.apache.catalina.startup.HostConfig deployWAR
INFORMATION: Deploying web application archive Snoutbook-1.0.0-SNAPSHOT.war
Sep 12, 2014 3:37:27 PM org.apache.catalina.startup.HostConfig deployDirectory
INFORMATION: Deploying web application directory docs
Sep 12, 2014 3:37:27 PM org.apache.catalina.startup.HostConfig deployDirectory
INFORMATION: Deploying web application directory examples
Sep 12, 2014 3:37:27 PM org.apache.catalina.startup.HostConfig deployDirectory
INFORMATION: Deploying web application directory host-manager
Sep 12, 2014 3:37:27 PM org.apache.catalina.startup.HostConfig deployDirectory
INFORMATION: Deploying web application directory manager
Sep 12, 2014 3:37:27 PM org.apache.catalina.startup.HostConfig deployDirectory
INFORMATION: Deploying web application directory ROOT
Sep 12, 2014 3:37:27 PM org.apache.coyote.AbstractProtocolHandler start
INFORMATION: Starting ProtocolHandler ["http-bio-8080"]
Sep 12, 2014 3:37:27 PM org.apache.coyote.AbstractProtocolHandler start
INFORMATION: Starting ProtocolHandler ["ajp-bio-8009"]
Sep 12, 2014 3:37:27 PM org.apache.catalina.startup.Catalina start
INFORMATION: Server startup in 8826 ms

http://localhost:8080/Snoutbook-1.0.0-SNAPSHOT/

12-Sep-2014 17:13:20.038 INFO [localhost-startStop-1] org.apache.catalina.startu
p.HostConfig.deployWAR Deploying web application archive D:\Users\b21090094\apac
he-tomcat-8.0.12\webapps\Snoutbook-1.0.0-SNAPSHOT.war
12-Sep-2014 17:13:23.132 INFO [localhost-startStop-1] org.apache.catalina.util.S
essionIdGeneratorBase.createSecureRandom Creation of SecureRandom instance for s
ession ID generation using [SHA1PRNG] took [255] milliseconds.
12-Sep-2014 17:13:23.169 INFO [localhost-startStop-1] org.springframework.web.se
rvlet.FrameworkServlet.initServletBean FrameworkServlet 'dispatcher': initializa
tion started
12-Sep-2014 17:13:23.182 INFO [localhost-startStop-1] org.springframework.contex
t.support.AbstractApplicationContext.prepareRefresh Refreshing WebApplicationCon
text for namespace 'dispatcher-servlet': startup date [Fri Sep 12 17:13:23 CEST
2014]; root of context hierarchy
12-Sep-2014 17:13:23.278 INFO [localhost-startStop-1] org.springframework.contex
t.annotation.ClassPathScanningCandidateComponentProvider.registerDefaultFilters
JSR-250 'javax.annotation.ManagedBean' found and supported for component scannin
g
12-Sep-2014 17:13:23.281 INFO [localhost-startStop-1] org.springframework.web.co
ntext.support.AnnotationConfigWebApplicationContext.loadBeanDefinitions Register
ing annotated classes: [class com.zeroturnaround.snoutbook.init.WebappConfigJpa]

12-Sep-2014 17:13:23.429 INFO [localhost-startStop-1] org.springframework.contex
t.annotation.ClassPathScanningCandidateComponentProvider.registerDefaultFilters
JSR-250 'javax.annotation.ManagedBean' found and supported for component scannin
g
12-Sep-2014 17:13:23.921 INFO [localhost-startStop-1] org.springframework.beans.
factory.support.DefaultListableBeanFactory.preInstantiateSingletons Pre-instanti
ating singletons in org.springframework.beans.factory.support.DefaultListableBea
nFactory@7169a1: defining beans [org.springframework.context.annotation.internal
ConfigurationAnnotationProcessor,org.springframework.context.annotation.internal
AutowiredAnnotationProcessor,org.springframework.context.annotation.internalRequ
iredAnnotationProcessor,org.springframework.context.annotation.internalCommonAnn
otationProcessor,org.springframework.context.annotation.internalPersistenceAnnot
ationProcessor,webappConfigJpa,org.springframework.context.annotation.Configurat
ionClassPostProcessor$ImportAwareBeanPostProcessor#0,addPetForm,snoutContoller,s
noutDao,org.springframework.aop.config.internalAutoProxyCreator,delegatingWebMvc
Configuration,requestMappingHandlerMapping,viewControllerHandlerMapping,beanName
HandlerMapping,resourceHandlerMapping,defaultServletHandlerMapping,requestMappin
gHandlerAdapter,mvcConversionService,mvcValidator,httpRequestHandlerAdapter,simp
leControllerHandlerAdapter,handlerExceptionResolver,proxyTransactionManagementCo
nfiguration,org.springframework.transaction.config.internalTransactionAdvisor,tr
ansactionAttributeSource,transactionInterceptor,transactionManager,entityManager
Factory,setupViewResolver,getDataSource]; root of factory hierarchy
12-Sep-2014 17:13:24.225 INFO [localhost-startStop-1] org.springframework.orm.jp
a.LocalContainerEntityManagerFactoryBean.createNativeEntityManagerFactory Buildi
ng JPA container EntityManagerFactory for persistence unit 'default'
12-Sep-2014 17:13:24.657 INFO [localhost-startStop-1] org.hibernate.annotations.
common.Version. HCANN000001: Hibernate Commons Annotations {4.0.1.Final}

12-Sep-2014 17:13:24.676 INFO [localhost-startStop-1] org.hibernate.Version.logV
ersion HHH000412: Hibernate Core {4.1.2}
12-Sep-2014 17:13:24.681 INFO [localhost-startStop-1] org.hibernate.cfg.Environm
ent. HHH000206: hibernate.properties not found
12-Sep-2014 17:13:24.686 INFO [localhost-startStop-1] org.hibernate.cfg.Environm
ent.buildBytecodeProvider HHH000021: Bytecode provider name : javassist
12-Sep-2014 17:13:24.772 INFO [localhost-startStop-1] org.hibernate.ejb.Ejb3Conf
iguration.configure HHH000204: Processing PersistenceUnitInfo [
        name: default
        ...]
12-Sep-2014 17:13:25.524 INFO [localhost-startStop-1] org.hibernate.service.jdbc
.connections.internal.ConnectionProviderInitiator.instantiateExplicitConnectionP
rovider HHH000130: Instantiating explicit connection provider: org.hibernate.ejb
.connection.InjectedDataSourceConnectionProvider
12-Sep-2014 17:13:26.275 INFO [localhost-startStop-1] org.hibernate.dialect.Dial
ect. HHH000400: Using dialect: org.hibernate.dialect.HSQLDialect
12-Sep-2014 17:13:26.356 INFO [localhost-startStop-1] org.hibernate.engine.trans
action.internal.TransactionFactoryInitiator.initiateService HHH000268: Transacti
on strategy: org.hibernate.engine.transaction.internal.jdbc.JdbcTransactionFacto
ry
12-Sep-2014 17:13:26.374 INFO [localhost-startStop-1] org.hibernate.hql.internal
.ast.ASTQueryTranslatorFactory. HHH000397: Using ASTQueryTranslatorFactory

12-Sep-2014 17:13:26.498 INFO [localhost-startStop-1] . HV0000
01: Hibernate Validator 4.3.0.Final
12-Sep-2014 17:13:27.699 INFO [localhost-startStop-1] org.springframework.web.se
rvlet.handler.AbstractHandlerMethodMapping.registerHandlerMethod Mapped "{[/addP
et],methods=[GET],params=[],headers=[],consumes=[],produces=[],custom=[]}" onto
public java.lang.String com.zeroturnaround.snoutbook.controllers.AddPetForm.setu
pForm(org.springframework.ui.Model)
12-Sep-2014 17:13:27.700 INFO [localhost-startStop-1] org.springframework.web.se
rvlet.handler.AbstractHandlerMethodMapping.registerHandlerMethod Mapped "{[/addP
et],methods=[POST],params=[],headers=[],consumes=[],produces=[],custom=[]}" onto
 public java.lang.String com.zeroturnaround.snoutbook.controllers.AddPetForm.han
dleSubmit(com.zeroturnaround.snoutbook.form.PetForm,org.springframework.validati
on.BindingResult,org.springframework.web.bind.support.SessionStatus)
12-Sep-2014 17:13:27.701 INFO [localhost-startStop-1] org.springframework.web.se
rvlet.handler.AbstractHandlerMethodMapping.registerHandlerMethod Mapped "{[/pet/
{petId}],methods=[],params=[],headers=[],consumes=[],produces=[],custom=[]}" ont
o public java.lang.String com.zeroturnaround.snoutbook.controllers.SnoutContolle
r.pet(java.lang.Long,org.springframework.ui.Model)
12-Sep-2014 17:13:27.702 INFO [localhost-startStop-1] org.springframework.web.se
rvlet.handler.AbstractHandlerMethodMapping.registerHandlerMethod Mapped "{[/owne
rs],methods=[],params=[],headers=[],consumes=[],produces=[],custom=[]}" onto pub
lic java.lang.String com.zeroturnaround.snoutbook.controllers.SnoutContoller.lis
tOwners(org.springframework.ui.Model)
12-Sep-2014 17:13:27.762 INFO [localhost-startStop-1] org.springframework.web.se
rvlet.handler.AbstractUrlHandlerMapping.registerHandler Mapped URL path [/**] on
to handler of type [class org.springframework.web.servlet.resource.DefaultServle
tHttpRequestHandler]
12-Sep-2014 17:13:28.129 INFO [localhost-startStop-1] org.springframework.web.se
rvlet.FrameworkServlet.initServletBean FrameworkServlet 'dispatcher': initializa
tion completed in 4960 ms
12-Sep-2014 17:13:28.140 INFO [localhost-startStop-1] org.apache.catalina.startu
p.HostConfig.deployWAR Deployment of web application archive D:\Users\b21090094\
apache-tomcat-8.0.12\webapps\Snoutbook-1.0.0-SNAPSHOT.war has finished in 8,103
ms
12-Sep-2014 17:13:28.141 INFO [localhost-startStop-1] org.apache.catalina.startu
p.HostConfig.deployDirectory Deploying web application directory D:\Users\b21090
094\apache-tomcat-8.0.12\webapps\docs
12-Sep-2014 17:13:28.167 INFO [localhost-startStop-1] org.apache.catalina.startu
p.HostConfig.deployDirectory Deployment of web application directory D:\Users\b2
1090094\apache-tomcat-8.0.12\webapps\docs has finished in 26 ms
12-Sep-2014 17:13:28.168 INFO [localhost-startStop-1] org.apache.catalina.startu
p.HostConfig.deployDirectory Deploying web application directory D:\Users\b21090
094\apache-tomcat-8.0.12\webapps\examples
12-Sep-2014 17:13:28.537 INFO [localhost-startStop-1] org.apache.catalina.startu
p.HostConfig.deployDirectory Deployment of web application directory D:\Users\b2
1090094\apache-tomcat-8.0.12\webapps\examples has finished in 370 ms
12-Sep-2014 17:13:28.538 INFO [localhost-startStop-1] org.apache.catalina.startu
p.HostConfig.deployDirectory Deploying web application directory D:\Users\b21090
094\apache-tomcat-8.0.12\webapps\host-manager
12-Sep-2014 17:13:28.572 INFO [localhost-startStop-1] org.apache.catalina.startu
p.HostConfig.deployDirectory Deployment of web application directory D:\Users\b2
1090094\apache-tomcat-8.0.12\webapps\host-manager has finished in 34 ms
12-Sep-2014 17:13:28.573 INFO [localhost-startStop-1] org.apache.catalina.startu
p.HostConfig.deployDirectory Deploying web application directory D:\Users\b21090
094\apache-tomcat-8.0.12\webapps\manager
12-Sep-2014 17:13:28.633 INFO [localhost-startStop-1] org.apache.catalina.startu
p.HostConfig.deployDirectory Deployment of web application directory D:\Users\b2
1090094\apache-tomcat-8.0.12\webapps\manager has finished in 61 ms
12-Sep-2014 17:13:28.633 INFO [localhost-startStop-1] org.apache.catalina.startu
p.HostConfig.deployDirectory Deploying web application directory D:\Users\b21090
094\apache-tomcat-8.0.12\webapps\ROOT
12-Sep-2014 17:13:28.659 INFO [localhost-startStop-1] org.apache.catalina.startu
p.HostConfig.deployDirectory Deployment of web application directory D:\Users\b2
1090094\apache-tomcat-8.0.12\webapps\ROOT has finished in 26 ms
12-Sep-2014 17:13:28.663 INFO [main] org.apache.coyote.AbstractProtocol.start St
arting ProtocolHandler ["http-nio-8080"]
12-Sep-2014 17:13:28.676 INFO [main] org.apache.coyote.AbstractProtocol.start St
arting ProtocolHandler ["ajp-nio-8009"]
12-Sep-2014 17:13:28.682 INFO [main] org.apache.catalina.startup.Catalina.start
Server startup in 8701 ms

Answer 1

尝试使用http://localhost:8080/snoutbook-1.0.0-snapshot/owners

当您将war文件上传到tomcat的webapp文件夹时，默认情况下tomcat允许您使用war的名称访问webapp。然后，当您查看web app初始值设定器(web.xml)时，它正在用/映射注册DispatcherServlet。接下来，查看控制器，它的@requestmapping指向/owners。因此，路径是：

主机:port+war-name+servlet-mapping+controller-mapping

localhost:8080/+snoutbook-1.0.0-快照/+/+所有者

等于

http://localhost:8080/snoutbook-1.0.0-snapshot/owners