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Ich versuche eine App zu erstellen, die einige Werte aus der Datenbank auflisten und modifizieren, hinzufügen, löschen kann, falls nötig mit Spring 4, und ich erhalte den folgenden Fehler (nur wenn die "@Controller" -Anmerkung vorhanden ist in beiden meiner Controller-Dateien, wenn ich die Anmerkung von einer der Dateien zu löschen, es funktioniert, aber ich eine Nachricht in der Konsole erhalten „keine Zuordnung gefunden ... in DispatcherServlet mit dem Namen ...):Spring mvc Mehrdeutige Zuordnung gefunden. Controller-Bean-Methode kann nicht zugeordnet werden
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 attempt
org.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}],methods=[],params=[],headers=[],consumes=[],produces=[],custom=[]}: There is already 'bookController' bean method
public 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)
to {[/edit/{id}],methods=[],params=[],headers=[],consumes=[],produces=[],custom=[]}: There is already 'bookController' bean method
public java.lang.String com.bookReview.app.BookController.editBook(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
diese Datei ist mein pom.xml
<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>
Dies ist meine Datei web.xml
<?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>
Das ist mein sevlet-context.xml Datei
<?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.xsd
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/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:bean
class="org.springframework.web.servlet.view.InternalResourceViewResolver">
<beans:property name="prefix" value="/WEB-INF/views/" />
<beans:property name="suffix" value=".jsp" />
</beans:bean>
<beans:bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource"
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 id="hibernate4AnnotatedSessionFactory"
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 id="bookDAO" class="com.bookReview.app.dao.bookDAOImpl">
<beans:property name="sessionFactory" ref="hibernate4AnnotatedSessionFactory" />
</beans:bean>
<beans:bean id="bookService" class="com.bookReview.app.service.BookServiceImpl">
<beans:property name="bookDAO" ref="bookDAO"></beans:property>
</beans:bean>
<beans:bean id="reviewDAO" class="com.bookReview.app.dao.reviewDAOImpl">
<beans:property name="sessionFactory" ref="hibernate4AnnotatedSessionFactory" />
</beans:bean>
<beans:bean id="reviewService" 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 id="transactionManager" class="org.springframework.orm.hibernate4.HibernateTransactionManager">
<beans:property name="sessionFactory" ref="hibernate4AnnotatedSessionFactory" />
</beans:bean>
</beans:beans>
Diese Datei mein BookController.java ist
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;
@Controller
public 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 it
this.bookService.addBook(b);
}else{
//existing book, call update
this.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";
}
}
Und das ist meine ReviewController.java Datei
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;
@Controller
public 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";
}
}
Vielen Dank
Wow. Das ist viel Code. Sind Sie sicher, dass dies ein [minimales vollständiges überprüfbares Beispiel] (http://stackoverflow.com/help/mcve) ist, Betonung auf dem Minimum? Wenn Sie ein minimales Beispiel erstellen, können andere Ihren Fehler schneller identifizieren und können Ihnen auch helfen, das Problem selbst zu finden. – Cecilia
Sorry, ich habe versucht, so viele Informationen wie möglich zu geben, damit das Problem leichter rückverfolgt werden kann. Wenn Sie darauf achten, die Pom, Web und Servlet Kontext XML-Dateien sind notwendig, weil es den Fehler gibt, außer dass Sie das Fehlerprotokoll finden können, die auch wichtig ist und zwei Klassen-Dateien, die es in Ordnung war, legte ich sie in vollem Format weil Das Problem lag am Ende dieser beiden Dateien. danke trotzdem –