java - Autowiring 失败 : Not an managed Type

Question

我的文凭项目有一个大问题，如果你们能帮助我，我会非常高兴!我做了一个 Maven 多模块项目并有 3 个“核心项目”

• NaviClean:(父)
• NaviCleanDomain:包含域模型以及我的所有实体和NaviCleanServer 需要的接口(interface) MeinRemoteDienst和 NaviCleanCleint 用于 Hessianprotocol
• NaviCleanClient:包含 GUI 和 Hessian 连接到NaviCleanServer
• NaviCleanServer:这是我的存储库，我与数据库的连接以及接口(interface)einRemoteDienst的实现NaviCleanServer & NaviCleanClient 在 Maven 中有 NaviCleanDomain 作为依赖关系。

现在每次我尝试在我的 Tomcat 上启动服务器时都会收到以下错误:

ERROR: org.springframework.web.context.ContextLoader - Context initialization failed
org.springframework.beans.factory.BeanCreationException: 
Error creating bean with name 'transaktionsRepository': 
Injection of persistence dependencies failed; 
nested exception is org.springframework.beans.factory.CannotLoadBeanClassException: 
Error loading class [at.naviclean.service.impl.MeinRemoteDienstImpl] for bean with name 'meinRemoteDienstImpl' defined in file [C:\Users\Fredy\Documents\workspace-sts-3.1.0.RELEASE\.metadata\.plugins\org.eclipse.wst.server.core\tmp0\wtpwebapps\NaviCleanServer\WEB-INF\classes\at\naviclean\service\impl\MeinRemoteDienstImpl.class]: 
problem with class file or dependent class; 
nested exception is java.lang.NoClassDefFoundError: at/naviclean/service/MeinRemoteDienst
at org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor.postProcessPropertyValues(PersistenceAnnotationBeanPostProcessor.java:342)
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.populateBean(AbstractAutowireCapableBeanFactory.java:1106)
    ……………….

模型库:

package at.naviclean.domain;

import java.io.Serializable;
import java.util.Date;

import javax.persistence.Column;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.MappedSuperclass;
import javax.persistence.Version;

@SuppressWarnings("serial")
@MappedSuperclass
public class ModelBase implements Serializable {

    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    @Column(name = "id")
    private Long id;

    @Version
    @Column(name = "ts")
    private Date timestamp;

    public Long getId() {
        return id;
    }

    public Date getTimestamp() {
        return timestamp;
    }

    public void setId(Long id) {
        this.id = id;
    }

    public void setTimestamp(Date timestamp) {
        this.timestamp = timestamp;
    }

}

卡萨:

package at.naviclean.domain;

import javax.persistence.Column;
import javax.persistence.Entity;

@SuppressWarnings("serial")
@Entity
public class Kassa extends ModelBase {

    @Column(name = "name", unique = true)
    private String name;

    @Column(name = "geld")
    private int geld;

    public Kassa(String name, int geld) {
        this.name = name;
        this.geld = geld;
    }

    public Kassa() {
    }

    public String getName() {
        return name;
    }

    public int getGeld() {
        return geld;
    }

    public void setName(String name) {
        this.name = name;
    }

    public void setGeld(int geld) {
        this.geld = geld;
    }

}

MeinRemoteDienst:

package at.naviclean.service;

import at.naviclean.domain.Kassa;

public interface MeinRemoteDienst {

    int getKassaCount(int plus);

    String getNameFromKassa(int id);

    Kassa findById(int id);
}

BaseRepository

package at.naviclean.repositories;

import org.springframework.data.jpa.repository.JpaRepository;

import at.naviclean.domain.ModelBase;

public interface BaseRepository<T extends ModelBase> extends
        JpaRepository<T, Long> {
    T findById(long id);

}

KassaRepository:

package at.naviclean.repositories;

import java.util.List;

import org.springframework.data.jpa.repository.Query;

import at.naviclean.domain.Kassa;

public interface KassaRepository extends BaseRepository<Kassa> {
    List<Kassa> findByGeld(int geld);

    Kassa findByName(String name);

    @Query("select k from Kassa k where k.geld = ?1")
    Kassa findByGeld1(int geld);
}

MeinRemoteDienstImpl:

package at.naviclean.service.impl;

import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import at.naviclean.domain.Kassa;
import at.naviclean.repositories.KassaRepository;
import at.naviclean.service.MeinRemoteDienst;

@Service
public class MeinRemoteDienstImpl implements MeinRemoteDienst {

    @Autowired(required = true)
    public KassaRepository kassaR;

    public int getKassaCount(int plus) {
        return 2;
    }


    public String getNameFromKassa(int id) {
        return kassaR.findById(id + 0l).getName();
    }

    @Override
    public Kassa findById(int id) {
        return = kassaR.findById(id + 0l);
    }

}

application-context.xml:

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


    <import resource="infrastructures.xml" />

    <jpa:repositories base-package="at.naviclean.repositories">
        <repository:exclude-filter type="regex"
            expression="at.naviclean.repositories.BaseRepository" />
    </jpa:repositories>

    <context:component-scan base-package="at.naviclean.service.impl" />

</beans>

infrastructures.xml:

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
        xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
        xmlns:jdbc="http://www.springframework.org/schema/jdbc"
        xmlns:context="http://www.springframework.org/schema/context"
        xsi:schemaLocation="http://www.springframework.org/schema/jdbc http://www.springframework.org/schema/jdbc/spring-jdbc-3.0.xsd
                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">



        <bean id="entityManagerFactory"
                class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
                <property name="dataSource" ref="dataSource" />
                <property name="jpaVendorAdapter">
                        <bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
                                <property name="showSql" value="true" />
                                <property name="generateDdl" value="true" />
                                <property name="databasePlatform" value="org.hibernate.dialect.MySQLDialect" />
                        </bean>
                </property>
        </bean>

        <bean id="dataSource"
                class="org.springframework.jdbc.datasource.DriverManagerDataSource">
                <property name="driverClassName" value="com.mysql.jdbc.Driver" />
                <property name="url" value="jdbc:mysql://localhost/kassatest" />
                <property name="username" value="root" />
                <property name="password" value="" />
        </bean>

        <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
                <property name="entityManagerFactory" ref="entityManagerFactory" />
        </bean>


        <bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean" />

</beans>

servlet-context.xml:

<?xml version="1.0" encoding="UTF-8"?>
<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:p="http://www.springframework.org/schema/p" xmlns:mvc="http://www.springframework.org/schema/mvc"
    xmlns:c="http://www.springframework.org/schema/c"
    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/util http://www.springframework.org/schema/util/spring-util-3.1.xsd
        http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">



<import resource="../root-context.xml" />
    <bean id="idMeinRemoteDienst" class="at.naviclean.service.impl.MeinRemoteDienstImpl" />
    <bean name="/MeinRemoteDienstHessian"
        class="org.springframework.remoting.caucho.HessianServiceExporter"
        p:serviceInterface="at.naviclean.service.MeinRemoteDienst"
        p:service-ref="idMeinRemoteDienst" />

</beans>

root-context.xml:

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

    <import resource="classpath:META-INF/spring/application-context.xml" />

</beans>

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/spring/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>


    <servlet>
        <servlet-name>/MeinRemoteDienstHessian</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/spring/appServlet/servlet-context.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>

    <servlet-mapping>
        <servlet-name>/MeinRemoteDienstHessian</servlet-name>
        <url-pattern>/remoting/*</url-pattern>
    </servlet-mapping>

</web-app>

这是我已经尝试过的:1. 我写了这个“变红”的测试:

package at.spengergasse.kassa;

import static org.hamcrest.CoreMatchers.equalTo;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.not;
import static org.hamcrest.CoreMatchers.nullValue;
import static org.hamcrest.MatcherAssert.assertThat;

import org.junit.Before;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.test.context.ContextConfiguration;
import org.springframework.test.context.junit4.SpringJUnit4ClassRunner;

import at.naviclean.domain.Kassa;
import at.naviclean.repositories.KassaRepository;

@ContextConfiguration("classpath:META-INF/spring/application-context.xml")
@RunWith(SpringJUnit4ClassRunner.class)
public class KassaTest {

    @Autowired(required = true)
    private KassaRepository kassaR;

    @Before
    public void setUp() throws Exception {

    }

    @Test
    public void findByIdTest() {
        Kassa k = kassaR.findById(2);

        assertThat(k, is(not(nullValue())));
    }

    @Test
    public void findByGeld() {
        Kassa k = kassaR.findByGeld1(1200);

        assertThat(k, is(not(nullValue())));
    }

    @Test
    public void test() {
        Kassa vorher = new Kassa("ssf", 222);
        kassaR.save(vorher);
        Kassa nachher = kassaR.findById(vorher.getId());
        kassaR.delete(nachher);
        assertThat(vorher.getId(), is(equalTo(nachher.getId())));
    }

}

错误:

ERROR: org.springframework.test.context.TestContextManager - 
Caught exception while allowing TestExecutionListener [org.springframework.test.context.support.DependencyInjectionTestExecutionListener@41e22632] to prepare test instance [at.spengergasse.kassa.KassaTest@6639be68]
java.lang.IllegalStateException: Failed to load ApplicationContext
    at org.springframework.test.context.TestContext.getApplicationContext(TestContext.java:157)
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.injectDependencies(DependencyInjectionTestExecutionListener.java:109)
    at org.springframework.test.context.support.DependencyInjectionTestExecutionListener.prepareTestInstance(DependencyInjectionTestExecutionListener.java:75)
    at org.springframework.test.context.TestContextManager.prepareTestInstance(TestContextManager.java:321)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.createTest(SpringJUnit4ClassRunner.java:211)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner$1.runReflectiveCall(SpringJUnit4ClassRunner.java:288)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:15)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.methodBlock(SpringJUnit4ClassRunner.java:290)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:231)
    at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:49)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:193)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:52)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:191)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:42)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:184)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:71)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:236)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:174)
    at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
    at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:467)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:683)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:390)
    at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:197)


Caused by: org.springframework.beans.factory.BeanCreationException: 
Error creating bean with name 'meinRemoteDienstImpl': 
**Injection of autowired dependencies failed**; 
nested exception is org.springframework.beans.factory.BeanCreationException: 
Could not autowire field: public at.naviclean.repositories.KassaRepository at.naviclean.service.impl.MeinRemoteDienstImpl.kassaR; 
nested exception is org.springframework.beans.factory.BeanCreationException: 
Error creating bean with name 'kassaRepository': FactoryBean threw exception on object creation; 
nested exception is java.lang.IllegalArgumentException: **Not an managed type: class at.naviclean.domain.Kassa**
    at org.springframework.beans.factory.annotation.AutowiredAnnotationBeanPostProcessor.postProcessPropertyValues(AutowiredAnnotationBeanPostProcessor.java:287)
    ………..

2.我在我的 persitence.xml 我的 domainmodel 中手动插入了一个存储库。结果是“绿色”测试，但我仍然无法启动服务器...

提前非常感谢!!!我无法想象没有你会怎样:)

Answer 1

Oliver Gierke 给了我一个非常有用的建议:

The last exception you get actually indicates a problem with your JPA setup. "Not a managed bean" means not a type the JPA provider is aware of. If you're setting up a Spring based JPA application I'd recommend to configure the "packagesToScan" property on the LocalContainerEntityManagerFactory you have configured to the package that contains your JPA entities. Alternatively you can list all your entity classes in persistence.xml, but that's usually more cumbersome.

The former error you got (NoClassDefFound) indicates the class mentioned is not available on the projects classpath. So you might wanna check the inter module dependencies you have. As the two relevant classes seem to be located in the same module it might also just be an issue with an incomplete deployment to Tomcat (WTP is kind of bitchy sometimes). I'd definitely recommend to run a test for verification (as you already did). As this seems to lead you to a different exception, I guess it's really some Eclipse glitch

谢谢!