SpringMVC BeanCreationException: creating bean with name 'personService' defined in file PersonServiceImpl.class?

Question

The Problem is very weird.My IDE is IDEA. Spring version is 4.3.1.RELEASE.The Blow is my project structure

The Blow is web.xml(Simple)

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.4"
         xmlns="http://java.sun.com/xml/ns/j2ee"
         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
         xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee
    http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd">

    <display-name>Spring MVC Application</display-name>
    <servlet>
        <servlet-name>SpringMVC</servlet-name>
        <servlet-class>
            org.springframework.web.servlet.DispatcherServlet
        </servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <context-param>
        <param-name>contextConfigLocation</param-name>
        <param-value>/WEB-INF/applicationContext.xml,
            /WEB-INF/infrastructure.xml
        </param-value>
    </context-param>
    <listener>
        <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class>
    </listener>

    <servlet-mapping>
        <servlet-name>SpringMVC</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>

    <servlet-mapping>
        <servlet-name>SpringMVC</servlet-name>
        <url-pattern>/home/profile</url-pattern>
    </servlet-mapping>

    <servlet-mapping>
        <servlet-name>default</servlet-name>
        <url-pattern>*.html</url-pattern>
    </servlet-mapping>
</web-app>

The apllicationContext.xml just one line

<context:component-scan base-package="net.codespace.entity, net.codespace.DAO, net.codespace.service" />

The Blow is SpringMVC-servlet.xml

<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xmlns:mvc="http://www.springframework.org/schema/mvc"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-3.0.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.0.xsd
        http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.0.xsd">

    <context:component-scan base-package="net.codespace" />
    <mvc:annotation-driven />
    <bean id="viewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/home/" />
        <property name="suffix" value=""/>
    </bean>
</beans>

The PersonDAO is interface.The Code is Blow

import net.codespace.entity.Person;

public interface PersonDAO {
    public void save(Person p);
    public void findAll();
}

PersonDAOImpl is implementation.

import net.codespace.entity.Person;
import org.hibernate.SessionFactory;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Repository;

@Repository("personDAO")
public class PersonDAOImpl implements PersonDAO{
    @Autowired
    private SessionFactory sessionFactory;
    public void save(Person p){

    }
    public void findAll(){

    }
}

Same,The PersonService is interface,

package net.codespace.service;

/**
 * Created by mark on 2016/7/26.
 */
import net.codespace.entity.Person;

public interface PersonService {
    public void savePerson(Person p);
    public void getAllPerson(Person p);
}

PersonServiceImpl is blow

import net.codespace.entity.Person;
import net.codespace.DAO.PersonDAO;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import org.springframework.transaction.annotation.Transactional;

@Service("personService")
@Transactional
public class  PersonServiceImpl implements PersonService{
    @Autowired
    private PersonDAO personDAO;

    public void savePerson(Person p){

    }
    public void getAllPerson(Person p){
        System.out.println("punk your pieese");
    }
}

The pom

<?xml version="1.0" encoding="UTF-8"?>
<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>net.markliang</groupId>
    <artifactId>lsc-toy</artifactId>
    <version>1.0-SNAPSHOT</version>

    <properties>
            <jackson.version>2.6.3</jackson.version>
            <hibernate.version>4.3.5.Final</hibernate.version>
            <spring.version>4.3.1.RELEASE</spring.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-tx</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-web</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-core</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-orm</artifactId>
            <version>${spring.version}</version>
        </dependency>

        <dependency>
            <groupId>tomcat</groupId>
            <artifactId>servlet-api</artifactId>
            <version>5.5.23</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>${jackson.version}</version>
        </dependency>

        <dependency>
            <groupId>c3p0</groupId>
            <artifactId>c3p0</artifactId>
            <version>0.9.1.2</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.6.3</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-core</artifactId>
            <version>5.1.0.Final</version>
        </dependency>

        <dependency>
            <groupId>org.hibernate</groupId>
            <artifactId>hibernate-validator</artifactId>
            <version>5.1.3.Final</version>
        </dependency>

        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
            <version>5.1.31</version>
        </dependency>
    </dependencies>

</project>

When I deploy this Project, I got these Error(Show Important)

严重: Exception sending context initialized event to listener instance of class org.springframework.web.context.ContextLoaderListener
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'personService' defined in file 
[C:\Users\mark\IdeaProjects\SMS01\out\artifacts\SMS01_war_exploded\WEB-INF\classes\net\codespace\service\PersonServiceImpl.class]: Post-processing failed of bean type [class net.codespace.service.PersonServiceImpl] failed; nested exception is java.lang.IllegalStateException: Failed to introspect bean class [net.codespace.service.PersonServiceImpl] for persistence metadata: could not find class that it depends on
Caused by: java.lang.IllegalStateException: Failed to introspect bean class [net.codespace.service.PersonServiceImpl] for 
persistence metadata: could not find class that it depends on
/* some info */

Caused by: java.lang.NoClassDefFoundError: Lnet/codespace/DAO/PersonDAO;
/* some info */

Caused by: java.lang.ClassNotFoundException: net.codespace.DAO.PersonDAO
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1891)
    at org.apache.catalina.loader.WebappClassLoaderBase.loadClass(WebappClassLoaderBase.java:1734)
  /*some info */

Could someone help me? If you need more detail info, I can Send u a mail.Thanks

Can you show the code from `PersonDAO`? Have you compiled your code recently? — Arthur Noseda, Jul 27 '16 at 14:12
Can you try to put @Service annotation on your public interface PersonService ? And remove @Service("personService") — AchillesVan, Jul 27 '16 at 14:13
Yeah I try it this all day.But allways this error. I will remove the @Service("personServie") and try — markliang, Jul 27 '16 at 14:19
if it doesnt work, try to replace the Transactional with Service in your PersonServiceImpl. So, #1. keep Service on your interface. #2. remove Transactional and replace with Service. — AchillesVan, Jul 27 '16 at 14:20
I use @Service in the PersonService interface, compile success. But If I use the service in controller. The problem again happend. — markliang, Jul 28 '16 at 09:53
The application just two line net.codespace.DAO net.codespace.Service — markliang, Jul 28 '16 at 09:54

score 1 · Answer 1 · edited May 23 '17 at 10:28

1

You need to know the difference between an applicationContext and a servlet-context (have a look at this answer.

Your servlet context shouldn't be scanning the persistence layer, because the persistence layer should have an application scope , which means to be available for all the servlets.

In your SpringMvc, scan only controllers:

<context:component-scan base-package="net.codespace.contrller" />

In your application Context you should scan repositories and services so you can bean wiring them.

edited May 23 '17 at 10:28

Community

1
1

answered Jul 27 '16 at 15:43

Rafik BELDI

4,140
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I try by your way.but no result – markliang Jul 30 '16 at 01:03

score 0 · Answer 2 · answered Jul 27 '16 at 15:24

The java.lang.ClassNotFoundException: net.codespace.DAO.PersonDAO and java.lang.NoClassDefFoundError: Lnet/codespace/DAO/PersonDAO should be the main concern.

You need to check why PersonDAO is not available on the classpath. Try the following:

Does the package declaration in your PersonDAO.java file match the folder structure? (it's either omitted in your post or missing from the file) i.e. package net.codespace.DAO;
Run mvn clean install and (making sure that it compiles and finishes ok) check that target/classes/net/codespace/DAO/PersonDAO.class exists.
If the above is ok then you will need to examine the classpath to see why it cannot find this class - this will depend on how you are running the application (in the IDE or Maven etc).

NB This shouldn't matter but Java naming convention for packages is lower case so ideally your package name should be net.codespace.dao

SpringMVC BeanCreationException: creating bean with name 'personService' defined in file PersonServiceImpl.class?

2 Answers2