部署簡單的Spring MVC應用程序（無web.xml）后出現錯誤404

Question

我想學習完全基於注釋的Spring MVC的一些基礎知識。 我從本教程開始。

克隆存儲庫后

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

並建立war檔案

mvn package

我通過簡單地將war文件復制到我的Apache Tomcat 7.0.12實例的webapps目錄中來部署該應用程序。 我正在停止並啟動服務器。

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

不幸的是，執行此操作后，我通過顯示頁面收到錯誤404。

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

我一直在尋找解決方案超過2個小時，但未能找到原因。 有人有類似的問題嗎？

編輯

我嘗試使用最新的Tomcat版本apache-tomcat-8.0.12 。 問題仍然存在。 但是，在部署Web應用程序時，控制台中會打印更多信息。

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

之后，我仍然收到錯誤404。

Answer 1

嘗試使用http://localhost:8080/Snoutbook-1.0.0-SNAPSHOT/owners

將war文件上傳到tomcat的webapp文件夾時，默認情況下，tomcat使您可以使用war的名稱訪問webapp。 然后，當您查看Web應用程序初始化程序 （ web.xml的替代物）時，它正在使用/映射注冊DispatcherServlet 。 接下來，查看控制器 ，它的@RequestMapping指向/owners 。 因此，路徑為：

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

等於

localhost:8080/ + Snoutbook-1.0.0-SNAPSHOT/ + / + owners

等於

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