你应该写
@Controller('/review')public class ReviewController {
和
@Controller('/book')public class BookController {
因为在您的代码中，您有两个方法都没有用于映射的显式/唯一路径（例如，如果我们调用/ edit / 1，那么就不可能从您editBookBookController或中明确确定控制器的方法ReviewController editReview）
解决方法我正在尝试构建一个应用程序，该应用程序可以列出一些来自数据库的值，并在必要时使用Spring4进行修改，添加，删除，并且收到以下错误消息（仅当两个控制器文件中都存在“@Controller”注释时，如果我从其中一个文件中删除了注释，那么它可以工作，但是我在控制台中收到一条消息“未找到映射……在名称为dispatcherservlet中…）：
INFO : org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping - Mapped '{[/edit/{id}],methods=[],params=[],headers=[],consumes=[],produces=[],custom=[]}' onto public java.lang.String com.bookReview.app.BookController.editBook(int,org.springframework.ui.Model)WARN : org.springframework.web.context.support.XmlWebApplicationContext - Exception encountered during context initialization - cancelling refresh attemptorg.springframework.beans.factory.BeanCreationException: Error creating bean with name ’org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping#0’: Invocation of init method failed; nested exception is java.lang.IllegalStateException: Ambiguous mapping found. Cannot map ’reviewController’ bean method public java.lang.String com.bookReview.app.ReviewController.editReview(int,org.springframework.ui.Model)to {[/edit/{id}],custom=[]}: There is already ’bookController’ bean methodpublic java.lang.String com.bookReview.app.BookController.editBook(int,org.springframework.ui.Model) mapped. at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1574) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:539) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.createBean(AbstractAutowireCapableBeanFactory.java:476) at org.springframework.beans.factory.support.AbstractBeanFactory$1.getObject(AbstractBeanFactory.java:303) at org.springframework.beans.factory.support.DefaultSingletonBeanRegistry.getSingleton(DefaultSingletonBeanRegistry.java:230) at org.springframework.beans.factory.support.AbstractBeanFactory.doGetBean(AbstractBeanFactory.java:299) at org.springframework.beans.factory.support.AbstractBeanFactory.getBean(AbstractBeanFactory.java:194) at org.springframework.beans.factory.support.DefaultListableBeanFactory.preInstantiateSingletons(DefaultListableBeanFactory.java:755) at org.springframework.context.support.AbstractApplicationContext.finishBeanFactoryInitialization(AbstractApplicationContext.java:757) at org.springframework.context.support.AbstractApplicationContext.refresh(AbstractApplicationContext.java:480) at org.springframework.web.context.ContextLoader.configureAndRefreshWebApplicationContext(ContextLoader.java:403) at org.springframework.web.context.ContextLoader.initWebApplicationContext(ContextLoader.java:306) at org.springframework.web.context.ContextLoaderListener.contextInitialized(ContextLoaderListener.java:106) at org.apache.catalina.core.StandardContext.listenerStart(StandardContext.java:4728) at org.apache.catalina.core.StandardContext.startInternal(StandardContext.java:5166) at org.apache.catalina.util.LifecycleBase.start(LifecycleBase.java:150) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1409) at org.apache.catalina.core.ContainerBase$StartChild.call(ContainerBase.java:1399) at java.util.concurrent.FutureTask.run(FutureTask.java:266) at java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1142) at java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:617) at java.lang.Thread.run(Thread.java:745)Caused by: java.lang.IllegalStateException: Ambiguous mapping found. Cannot map ’reviewController’ bean method public java.lang.String com.bookReview.app.ReviewController.editReview(int,org.springframework.ui.Model) mapped. at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.registerHandlerMethod(AbstractHandlerMethodMapping.java:212) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.detectHandlerMethods(AbstractHandlerMethodMapping.java:184) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.initHandlerMethods(AbstractHandlerMethodMapping.java:144) at org.springframework.web.servlet.handler.AbstractHandlerMethodMapping.afterPropertiesSet(AbstractHandlerMethodMapping.java:123) at org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerMapping.afterPropertiesSet(RequestMappingHandlerMapping.java:126) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.invokeInitMethods(AbstractAutowireCapableBeanFactory.java:1633) at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1570) ... 21 more
这是我的pom.xml文件
<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.bookReview.app</groupId> <artifactId>BookReviewApp</artifactId> <version>0.0.1-SNAPSHOT</version> <packaging>war</packaging> <name>BookReviewApp</name> <description>review app</description> <!-- <properties>Generic properties<java.version>1.8</java.version><project.build.sourceEncoding>UTF-8</project.build.sourceEncoding><project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>Spring<spring-framework.version>4.0.3.RELEASE</spring-framework.version>Hibernate / JPA<hibernate.version>4.3.5.Final</hibernate.version><hibernate.version>3.6.9.Final</hibernate.version>Logging<logback.version>1.0.13</logback.version><slf4j.version>1.7.5</slf4j.version> </properties> --> <dependencies> <!-- Spring --> <dependency><groupId>org.springframework</groupId><artifactId>spring-context</artifactId><version>4.1.6.RELEASE</version><!-- Exclude Commons Logging in favor of SLF4j --> <exclusions><exclusion> <groupId>commons-logging</groupId> <artifactId>commons-logging</artifactId> </exclusion> </exclusions> </dependency> <dependency><groupId>org.springframework</groupId><artifactId>spring-webmvc</artifactId><version>4.1.6.RELEASE</version> </dependency> <dependency><groupId>org.springframework</groupId><artifactId>spring-tx</artifactId><version>4.1.6.RELEASE</version> </dependency> <!-- Hibernate --> <dependency><groupId>org.hibernate</groupId><artifactId>hibernate-core</artifactId><version>4.3.9.Final</version> </dependency> <dependency><groupId>org.hibernate</groupId><artifactId>hibernate-entitymanager</artifactId><version>4.3.9.Final</version> </dependency> <!-- Apache Commons DBCP --> <dependency><groupId>commons-dbcp</groupId><artifactId>commons-dbcp</artifactId><version>1.4</version> </dependency> <!-- Spring ORM --> <dependency><groupId>org.springframework</groupId><artifactId>spring-orm</artifactId><version>4.1.6.RELEASE</version> </dependency> <!-- AspectJ --> <dependency><groupId>org.aspectj</groupId><artifactId>aspectjrt</artifactId><version>1.8.5</version> </dependency> <!-- Logging --> <dependency><groupId>org.slf4j</groupId><artifactId>slf4j-api</artifactId><version>1.7.12</version> </dependency> <dependency><groupId>org.slf4j</groupId><artifactId>jcl-over-slf4j</artifactId><version>1.7.12</version><scope>runtime</scope> </dependency> <dependency><groupId>org.slf4j</groupId><artifactId>slf4j-log4j12</artifactId><version>1.7.12</version><scope>runtime</scope> </dependency> <dependency> <groupId>log4j</groupId> <artifactId>log4j</artifactId> <version>1.2.15</version> <exclusions><exclusion> <groupId>javax.mail</groupId> <artifactId>mail</artifactId></exclusion><exclusion> <groupId>javax.jms</groupId> <artifactId>jms</artifactId></exclusion><exclusion> <groupId>com.sun.jdmk</groupId> <artifactId>jmxtools</artifactId></exclusion><exclusion> <groupId>com.sun.jmx</groupId> <artifactId>jmxri</artifactId></exclusion> </exclusions> <scope>runtime</scope></dependency><!-- @Inject --><dependency> <groupId>javax.inject</groupId> <artifactId>javax.inject</artifactId> <version>1</version></dependency><!-- Servlet --><dependency> <groupId>javax.servlet</groupId> <artifactId>servlet-api</artifactId> <version>2.5</version> <scope>provided</scope></dependency><dependency> <groupId>javax.servlet.jsp</groupId> <artifactId>jsp-api</artifactId> <version>2.2.1-b03</version> <scope>provided</scope></dependency><dependency> <groupId>junit</groupId> <artifactId>junit</artifactId> <version>4.7</version> <scope>test</scope></dependency><dependency> <groupId>javax.servlet</groupId> <artifactId>jstl</artifactId> <version>1.2</version></dependency><!-- Test --><dependency> <groupId>mysql</groupId> <artifactId>mysql-connector-java</artifactId> <version>5.1.35</version></dependency><dependency> <groupId>org.springframework</groupId> <artifactId>spring-aop</artifactId> <version>4.1.6.RELEASE</version></dependency> </dependencies></project>
这是我的web.xml文件
<?xml version='1.0' encoding='UTF-8'?><web-app version='2.5' xmlns='http://java.sun.com/xml/ns/javaee' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xsi:schemaLocation='http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd'> <!-- The definition of the Root Spring Container shared by all Servlets and Filters --> <context-param><param-name>contextConfigLocation</param-name><param-value>/WEB-INF/app/root-context.xml</param-value> </context-param> <!-- Creates the Spring Container shared by all Servlets and Filters --> <listener><listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> </listener> <!-- Processes application requests --> <servlet><servlet-name>servlet</servlet-name><servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class><init-param> <param-name>contextConfigLocation</param-name> <param-value>/WEB-INF/app/servlet/sevlet-context.xml</param-value></init-param><load-on-startup>1</load-on-startup> </servlet> <servlet-mapping><servlet-name>servlet</servlet-name><url-pattern>/</url-pattern> </servlet-mapping></web-app>
这是我的sevlet-context.xml文件
<?xml version='1.0' encoding='UTF-8'?><beans:beans xmlns='http://www.springframework.org/schema/mvc' xmlns:xsi='http://www.w3.org/2001/XMLSchema-instance' xmlns:mvc='http://www.springframework.org/schema/mvc' xmlns:beans='http://www.springframework.org/schema/beans' xmlns:context='http://www.springframework.org/schema/context' xmlns:tx='http://www.springframework.org/schema/tx' xsi:schemaLocation='http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsdhttp://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsdhttp://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsdhttp://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-4.0.xsd'> <!-- DispatcherServlet Context: defines this servlet’s request-processing infrastructure --> <!-- Enables the Spring MVC @Controller programming model --> <annotation-driven /> <!-- Handles HTTP GET requests for /resources/** by efficiently serving up static resources in the ${webappRoot}/resources directory --> <resources mapping='/resources/**' location='/resources/' /> <!-- Resolves views selected for rendering by @Controllers to .jsp resources in the /WEB-INF/views directory --> <beans:beanclass='org.springframework.web.servlet.view.InternalResourceViewResolver'><beans:property name='prefix' value='/WEB-INF/views/' /><beans:property name='suffix' value='.jsp' /> </beans:bean> <beans:bean destroy-method='close'><beans:property name='driverClassName' value='com.mysql.jdbc.Driver' /><beans:property name='url' value='jdbc:mysql://localhost:3306/test' /><beans:property name='username' value='serban' /><beans:property name='password' value='serban' /> </beans:bean> <!-- Hibernate 4 SessionFactory Bean definition --> <beans:bean class='org.springframework.orm.hibernate4.LocalSessionFactoryBean'><beans:property name='dataSource' ref='dataSource' /><beans:property name='annotatedClasses'> <beans:list><beans:value>com.bookReview.app.model.book</beans:value><beans:value>com.bookReview.app.model.review</beans:value> </beans:list></beans:property><beans:property name='hibernateProperties'> <beans:props><beans:prop key='hibernate.dialect'>org.hibernate.dialect.MySQLDialect</beans:prop><beans:prop key='hibernate.show_sql'>true</beans:prop> </beans:props></beans:property> </beans:bean> <beans:bean class='com.bookReview.app.dao.bookDAOImpl'><beans:property name='sessionFactory' ref='hibernate4AnnotatedSessionFactory' /> </beans:bean> <beans:bean class='com.bookReview.app.service.BookServiceImpl'><beans:property name='bookDAO' ref='bookDAO'></beans:property> </beans:bean> <beans:bean class='com.bookReview.app.dao.reviewDAOImpl'><beans:property name='sessionFactory' ref='hibernate4AnnotatedSessionFactory' /> </beans:bean> <beans:bean class='com.bookReview.app.service.ReviewServiceImpl'><beans:property name='reviewDAO' ref='reviewDAO'></beans:property> </beans:bean> <!-- <default-servlet-handler/> --> <context:component-scan base-package='com.bookReview.app' /> <tx:annotation-driven transaction-manager='transactionManager'/><beans:bean class='org.springframework.orm.hibernate4.HibernateTransactionManager'><beans:property name='sessionFactory' ref='hibernate4AnnotatedSessionFactory' /> </beans:bean> </beans:beans>
这是我的BookController.java文件
package com.bookReview.app;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.beans.factory.annotation.Qualifier;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.ModelAttribute;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import com.bookReview.app.model.book;import com.bookReview.app.service.BookService;@Controllerpublic class BookController { private BookService bookService; @Autowired(required=true) @Qualifier(value='bookService') public void setBookService(BookService bs){this.bookService = bs; } @RequestMapping(value = '/books',method = RequestMethod.GET) public String listBooks(Model model) {model.addAttribute('book',new book());model.addAttribute('listBooks',this.bookService.listBooks());return 'book'; } //For add and update book both@RequestMapping(value= '/book/add',method = RequestMethod.POST)public String addBook(@ModelAttribute('book') book b){ if(b.getBookid() == 0){//new book,add itthis.bookService.addBook(b); }else{//existing book,call updatethis.bookService.updateBook(b); } return 'redirect:/books';}@RequestMapping('/remove/{id}')public String removeBook(@PathVariable('id') int id){ this.bookService.removeBook(id); return 'redirect:/books';} @RequestMapping('/edit/{id}') public String editBook(@PathVariable('id') int id,Model model){model.addAttribute('book',this.bookService.getBookById(id));model.addAttribute('listBooks',this.bookService.listBooks());return 'book'; }}
这是我的ReviewController.java文件
package com.bookReview.app;import org.springframework.beans.factory.annotation.Autowired;import org.springframework.beans.factory.annotation.Qualifier;import org.springframework.stereotype.Controller;import org.springframework.ui.Model;import org.springframework.web.bind.annotation.ModelAttribute;import org.springframework.web.bind.annotation.PathVariable;import org.springframework.web.bind.annotation.RequestMapping;import org.springframework.web.bind.annotation.RequestMethod;import com.bookReview.app.model.review;import com.bookReview.app.service.ReviewService;@Controllerpublic class ReviewController { private ReviewService reviewService; @Autowired(required=true) @Qualifier(value='reviewService') public void setReviewService(ReviewService rs){this.reviewService = rs; } @RequestMapping(value = '/reviews',method = RequestMethod.GET) public String listReviews(Model model) {model.addAttribute('book',new review());model.addAttribute('listReviews',this.reviewService.listReviews());return 'review'; } //For add and update review both @RequestMapping(value= '/review/add',method = RequestMethod.POST) public String addReview(@ModelAttribute('review') review r){if(r.getId() == 0){ //new review,add it this.reviewService.addReview(r);}else{ //existing review,call update this.reviewService.updateReview(r);}return 'redirect:/reviews'; } @RequestMapping('/remove/{id}') public String removeReview(@PathVariable('id') int id){this.reviewService.removeReview(id);return 'redirect:/reviews'; } @RequestMapping('/edit/{id}')public String editReview(@PathVariable('id') int id,Model model){ model.addAttribute('review',this.reviewService.getReviewById(id)); model.addAttribute('listReviews',this.reviewService.listReviews()); return 'review';}}
谢谢
