java - 为什么在独立 Tomcat 上部署时我的 RequestMapping 没有被拾取？它适用于 Eclipse WTP

Question

我正在使用 RequestMapping 注释在 Tomcat8 上部署一个 Spring MVC webapp。 映射示例:

@Controller("brandController")
@RequestMapping("brand")
public class BrandController {

@Autowired
private BrandService brandService;


/**
 * Creates or edits details about a specific Brand
 * @param brand the brand to create/edit
 */
@RequestMapping(value="/save", consumes="application/json",  produces="application/json", method=RequestMethod.POST)
public @ResponseBody Brand editBrand(@RequestBody Brand brand){
    brandService.saveBrand(brand);
    return brand;
}
...
}

网络.xml

<web-app xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns="http://xmlns.jcp.org/xml/ns/javaee" xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd" version="3.1">


    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/rest/*</url-pattern>
    </servlet-mapping>
</web-app>

web.xml 引用了WEB-INF/dispatcher-servlet.xml，内容如下

<?xml version="1.0" encoding="UTF-8"?>
<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:aop="http://www.springframework.org/schema/aop"
    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
    xmlns:tx="http://www.springframework.org/schema/tx"
    xsi:schemaLocation="http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd
        http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-4.0.xsd
        http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd">

<context:component-scan base-package="com.acme.web.controller"/>


<!-- Data Source -->
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource" destroy-method="close">
    <!-- Production Environment -->
    <property name="driverClass" value="org.postgresql.Driver"/>
    <property name="jdbcUrl" value="jdbc:postgresql://x.x.x.xx/mydb"/>
    <property name="user" value="myuser"/>
    <property name="password" value="mypass" />

    <!-- c3p0 properties -->

    <property name="acquireIncrement" value="3"/>
    <property name="maxIdleTime" value="600"/><!-- seconds -->
    <property name="minPoolSize" value="3"/>
    <property name="maxPoolSize" value="6"/>
</bean>

<bean id="sessionFactory" class="org.springframework.orm.hibernate4.LocalSessionFactoryBean">
    <property name="dataSource" ref="dataSource"/>
    <property name="packagesToScan" value="com.acme.model"/>
    <property name="hibernateProperties">
        <props>
            <prop key="hibernate.hbm2ddl.auto">validate</prop>
            <prop key="hibernate.dialect">org.hibernate.dialect.PostgreSQLDialect</prop>
            <prop key="hibernate.show_sql">false</prop>
        </props>
    </property>
</bean>

<bean id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
    <property name="sessionFactory" ref="sessionFactory"/>
    <property name="nestedTransactionAllowed" value="true"/>
</bean>
<tx:annotation-driven/>


<!-- scan for Spring MVC components -->
<mvc:annotation-driven/>



</beans>

catalina.out 日志如下 (loglevel = INFO)

    26-Jan-2015 13:10:41.459 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["http-nio-8080"]
26-Jan-2015 13:10:41.521 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
26-Jan-2015 13:10:41.524 INFO [main] org.apache.coyote.AbstractProtocol.init Initializing ProtocolHandler ["ajp-nio-8009"]
26-Jan-2015 13:10:41.525 INFO [main] org.apache.tomcat.util.net.NioSelectorPool.getSharedSelector Using a shared selector for servlet write/read
26-Jan-2015 13:10:41.526 INFO [main] org.apache.catalina.startup.Catalina.load Initialization processed in 2574 ms
26-Jan-2015 13:10:41.596 INFO [main] org.apache.catalina.core.StandardService.startInternal Starting service Catalina
26-Jan-2015 13:10:41.601 INFO [main] org.apache.catalina.core.StandardEngine.startInternal Starting Servlet Engine: Apache Tomcat/8.0.3
26-Jan-2015 13:10:41.680 INFO [localhost-startStop-1] org.apache.catalina.startup.HostConfig.deployWAR Deploying web application archive /home/me/apache-tomcat-8.0.3/webapps/ACME.war
26-Jan-2015 13:10:41.713 WARNING [localhost-startStop-1] org.apache.catalina.startup.SetContextPropertiesRule.begin [SetContextPropertiesRule]{Context} Setting property 'antiJARLocking' to 'true' did not find a matching property.
26-Jan-2015 13:10:47.897 INFO [localhost-startStop-1] org.apache.catalina.util.SessionIdGenerator.createSecureRandom Creation of SecureRandom instance for session ID generation using [SHA1PRNG] took [112] milliseconds.
2015-01-26 13:10:48,187 INFO  [localhost-startStop-1] servlet.FrameworkServlet (FrameworkServlet.java:484) - FrameworkServlet 'dispatcher': initialization started
2015-01-26 13:10:48,218 INFO  [localhost-startStop-1] support.AbstractApplicationContext (AbstractApplicationContext.java:510) - Refreshing WebApplicationContext for namespace 'dispatcher-servlet': startup date [Mon Jan 26 13:10:48 GMT 2015]; root of context hierarchy
2015-01-26 13:10:48,274 INFO  [localhost-startStop-1] xml.XmlBeanDefinitionReader (XmlBeanDefinitionReader.java:317) - Loading XML bean definitions from ServletContext resource [/WEB-INF/dispatcher-servlet.xml]
2015-01-26 13:10:49,172 INFO  [localhost-startStop-1] log.MLog (MLog.java:92) - MLog clients using log4j logging.
2015-01-26 13:10:49,206 INFO  [localhost-startStop-1] c3p0.C3P0Registry (C3P0Registry.java:216) - Initializing c3p0-0.9.2.1 [built 20-March-2013 10:47:27 +0000; debug? true; trace: 10]
26-Jan-2015 13:10:49.604 INFO [localhost-startStop-1] org.hibernate.annotations.common.reflection.java.JavaReflectionManager.<clinit> HCANN000001: Hibernate Commons Annotations {4.0.5.Final}
26-Jan-2015 13:10:49.620 INFO [localhost-startStop-1] org.hibernate.Version.logVersion HHH000412: Hibernate Core {4.3.6.Final}
26-Jan-2015 13:10:49.625 INFO [localhost-startStop-1] org.hibernate.cfg.Environment.<clinit> HHH000206: hibernate.properties not found
26-Jan-2015 13:10:49.629 INFO [localhost-startStop-1] org.hibernate.cfg.Environment.buildBytecodeProvider HHH000021: Bytecode provider name : javassist
2015-01-26 13:10:50,015 INFO  [localhost-startStop-1] impl.AbstractPoolBackedDataSource (AbstractPoolBackedDataSource.java:522) - Initializing c3p0 pool... com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, dataSourceName -> 1hge2vb97an867f5dlj3r|2341b2f0, debugUnreturnedConnectionStackTraces -> false, description -> null, driverClass -> org.postgresql.Driver, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, identityToken -> 1hge2vb97an867f5dlj3r|2341b2f0, idleConnectionTestPeriod -> 0, initialPoolSize -> 3, jdbcUrl -> jdbc:postgresql://xx.xx.xx.xx/mydb, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 600, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 6, maxStatements -> 0, maxStatementsPerConnection -> 0, minPoolSize -> 3, numHelperThreads -> 3, preferredTestQuery -> null, properties -> {user=******, password=******}, propertyCycle -> 0, statementCacheNumDeferredCloseThreads -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, unreturnedConnectionTimeout -> 0, userOverrides -> {}, usesTraditionalReflectiveProxies -> false ]
26-Jan-2015 13:10:52.102 INFO [localhost-startStop-1] org.hibernate.dialect.Dialect.<init> HHH000400: Using dialect: org.hibernate.dialect.PostgreSQLDialect
26-Jan-2015 13:10:52.123 INFO [localhost-startStop-1] org.hibernate.engine.jdbc.internal.LobCreatorBuilder.useContextualLobCreation HHH000424: Disabling contextual LOB creation as createClob() method threw error : java.lang.reflect.InvocationTargetException
26-Jan-2015 13:10:52.208 INFO [localhost-startStop-1] org.hibernate.engine.transaction.internal.TransactionFactoryInitiator.initiateService HHH000399: Using default transaction strategy (direct JDBC transactions)
26-Jan-2015 13:10:52.222 INFO [localhost-startStop-1] org.hibernate.hql.internal.ast.ASTQueryTranslatorFactory.<init> HHH000397: Using ASTQueryTranslatorFactory
26-Jan-2015 13:10:52.487 INFO [localhost-startStop-1] org.hibernate.tool.hbm2ddl.SchemaValidator.validate HHH000229: Running schema validator
26-Jan-2015 13:10:52.487 INFO [localhost-startStop-1] org.hibernate.tool.hbm2ddl.SchemaValidator.validate HHH000102: Fetching database metadata
2015-01-26 13:10:52,574 INFO  [localhost-startStop-1] hibernate4.HibernateTransactionManager (HibernateTransactionManager.java:360) - Using DataSource [com.mchange.v2.c3p0.ComboPooledDataSource [ acquireIncrement -> 3, acquireRetryAttempts -> 30, acquireRetryDelay -> 1000, autoCommitOnClose -> false, automaticTestTable -> null, breakAfterAcquireFailure -> false, checkoutTimeout -> 0, connectionCustomizerClassName -> null, connectionTesterClassName -> com.mchange.v2.c3p0.impl.DefaultConnectionTester, dataSourceName -> 1hge2vb97an867f5dlj3r|2341b2f0, debugUnreturnedConnectionStackTraces -> false, description -> null, driverClass -> org.postgresql.Driver, factoryClassLocation -> null, forceIgnoreUnresolvedTransactions -> false, identityToken -> 1hge2vb97an867f5dlj3r|2341b2f0, idleConnectionTestPeriod -> 0, initialPoolSize -> 3, jdbcUrl -> jdbc:postgresql://xx.xx.xx.xx/mydb, maxAdministrativeTaskTime -> 0, maxConnectionAge -> 0, maxIdleTime -> 600, maxIdleTimeExcessConnections -> 0, maxPoolSize -> 6, maxStatements -> 0, maxStatementsPerConnection -> 0, minPoolSize -> 3, numHelperThreads -> 3, preferredTestQuery -> null, properties -> {user=******, password=******}, propertyCycle -> 0, statementCacheNumDeferredCloseThreads -> 0, testConnectionOnCheckin -> false, testConnectionOnCheckout -> false, unreturnedConnectionTimeout -> 0, userOverrides -> {}, usesTraditionalReflectiveProxies -> false ]] of Hibernate SessionFactory for HibernateTransactionManager
2015-01-26 13:10:53,555 INFO  [localhost-startStop-1] annotation.RequestMappingHandlerAdapter (RequestMappingHandlerAdapter.java:518) - Looking for @ControllerAdvice: WebApplicationContext for namespace 'dispatcher-servlet': startup date [Mon Jan 26 13:10:48 GMT 2015]; root of context hierarchy
2015-01-26 13:10:53,604 INFO  [localhost-startStop-1] annotation.RequestMappingHandlerAdapter (RequestMappingHandlerAdapter.java:518) - Looking for @ControllerAdvice: WebApplicationContext for namespace 'dispatcher-servlet': startup date [Mon Jan 26 13:10:48 GMT 2015]; root of context hierarchy
2015-01-26 13:10:53,670 WARN  [localhost-startStop-1] view.ContentNegotiatingViewResolver (ContentNegotiatingViewResolver.java:278) - Did not find any ViewResolvers to delegate to; please configure them using the 'viewResolvers' property on the ContentNegotiatingViewResolver
2015-01-26 13:10:53,701 INFO  [localhost-startStop-1] servlet.FrameworkServlet (FrameworkServlet.java:503) - FrameworkServlet 'dispatcher': initialization completed in 5512 ms
26-Jan-2015 13:10:54.334 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["http-nio-8080"]
26-Jan-2015 13:10:54.339 INFO [main] org.apache.coyote.AbstractProtocol.start Starting ProtocolHandler ["ajp-nio-8009"]
26-Jan-2015 13:10:54.344 INFO [main] org.apache.catalina.startup.Catalina.start Server startup in 12817 ms

现在，如果我通过 Eclipse WTP 部署我的应用程序，映射将被拾取并且应用程序可以正常工作。 但是，当我在“普通”Tomcat 8 容器中部署应用程序时，不会获取映射。

注意 Tomcat 的运行时包是完全一样的，唯一的区别是我在 Eclipse 和其他 WEB-INF 中部署的库和类是相同的，因此我怀疑这与 Eclipse 自定义的一些设置有关，但我找不到任何相关差异。

你有什么想法吗？ 谢谢。

Answer 1

你的 Controller 在另一个模块中吗？也许 eclipse 将它部署为类，当你制作 war 文件时它不再在当前类文件夹中？

p.s:我认为这是资源问题。找不到任何原因可能是类的原因。不管怎样:D