我开始了 spring mvc 项目并尝试在那里使用 JPA。我有类 User 和 BasePersistable 以及由@RooJavaBean 生成的访问器。
import javax.persistence.GeneratedValue;
import javax.persistence.MappedSuperclass;
import javax.persistence.Version;
import org.springframework.data.annotation.Id;
import org.springframework.data.domain.Persistable;
import org.springframework.roo.addon.javabean.RooJavaBean;
@RooJavaBean
@MappedSuperclass
public abstract class BasePersistable implements Persistable<Long> {
private static final long serialVersionUID = -3281161320810540373L;
@Id
@GeneratedValue
private Long id;
@Version
private Integer version;
@Override
public boolean isNew() {
return getId() == null;
}
}
和
@Entity
@RooJavaBean
public class User extends BasePersistable {
private static final long serialVersionUID = -1999311284585286126L;
private String username;
private String passwrd;
private String firstname;
private String lastname;
private String email;
@Temporal(TemporalType.TIMESTAMP)
private Calendar signupDate;
private Sex sex;
private String comment;
}
Roo 肯定会生成 getter 和 setter。我可以在代码中访问 getId() 方法：
User user = new User();
user.getId();
但我得到了这个错误：
[INFO] Scanning for projects...
[WARNING]
[WARNING] Some problems were encountered while building the effective model for com.test:mvc1:war:1.0.0-BUILD-SNAPSHOT
[WARNING] 'build.plugins.plugin.(groupId:artifactId)' must be unique but found duplicate declaration of plugin org.codehaus.mojo:aspectj-maven-plugin @ line 284, column 21
[WARNING]
[WARNING] It is highly recommended to fix these problems because they threaten the stability of your build.
[WARNING]
[WARNING] For this reason, future Maven versions might no longer support building such malformed projects.
[WARNING]
[INFO]
[INFO] ------------------------------------------------------------------------
[INFO] Building mvc1 1.0.0-BUILD-SNAPSHOT
[INFO] ------------------------------------------------------------------------
[INFO]
[INFO] --- maven-clean-plugin:2.4.1:clean (default-clean) @ mvc1 ---
[INFO] Deleting /home/zzz/ws_java/mvc1/target
[INFO]
[INFO] --- maven-resources-plugin:2.4.3:resources (default-resources) @ mvc1 ---
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[WARNING] Using platform encoding (UTF-8 actually) to copy filtered resources, i.e. build is platform dependent!
[INFO] Copying 1 resource
[INFO] Copying 3 resources
[INFO]
[INFO] --- maven-compiler-plugin:2.3.2:compile (default-compile) @ mvc1 ---
[WARNING] File encoding has not been set, using platform encoding UTF-8, i.e. build is platform dependent!
[INFO] Compiling 6 source files to /home/zzz/ws_java/mvc1/target/classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] /home/zzz/ws_java/mvc1/src/main/java/com/test/mvc1/domain/User.java:[13,7] error: User is not abstract and does not override abstract method getId() in Persistable
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 5.831s
[INFO] Finished at: Sat Aug 11 09:56:58 NOVT 2012
[INFO] Final Memory: 16M/86M
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:2.3.2:compile (default-compile) on project mvc1: Compilation failure
[ERROR] /home/zzz/ws_java/mvc1/src/main/java/com/test/mvc1/domain/User.java:[13,7] error: User is not abstract and does not override abstract method getId() in Persistable
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException
我认为 AspectJ 似乎存在一些问题。任何人都可以帮忙吗？
UPD
这是 BasePersistable_Roo_JavaBean.aj
// WARNING: DO NOT EDIT THIS FILE. THIS FILE IS MANAGED BY SPRING ROO.
// You may push code into the target .java compilation unit if you wish to edit any member(s).
package com.test.mvc1.domain;
import com.test.mvc1.domain.BasePersistable;
privileged aspect BasePersistable_Roo_JavaBean {
public Long BasePersistable.getId() {
return this.id;
}
public void BasePersistable.setId(Long id) {
this.id = id;
}
public Integer BasePersistable.getVersion() {
return this.version;
}
public void BasePersistable.setVersion(Integer version) {
this.version = version;
}
}
顺便说一句，如果将存根方法 getId() 添加到 User 类：
public Long getId() {
return 1L;
}
UPD 2 我什至无法想象这个项目有什么问题。我在 pom 文件中添加了新的依赖项，maven 不下载它。这是我的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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.test</groupId>
<artifactId>mvc1</artifactId>
<name>mvc1</name>
<packaging>war</packaging>
<version>1.0.0-BUILD-SNAPSHOT</version>
<properties>
<java-version>1.7</java-version>
<spring.version>3.1.0.RELEASE</spring.version>
<aspectj.version>1.6.12</aspectj.version>
<org.slf4j-version>1.5.10</org.slf4j-version>
<roo.version>1.2.1.RELEASE</roo.version>
<data-jpa.version>1.1.0.M1</data-jpa.version>
<tiles.version>2.2.2</tiles.version>
<hibernate-jpa-api.version>1.0.1.Final</hibernate-jpa-api.version>
<hibernate-entity-manager.version>4.1.0.Final</hibernate-entity-manager.version>
<aspectj-plugin.version>1.2</aspectj-plugin.version>
<eclipse-plugin.version>2.7</eclipse-plugin.version>
<compiler-plugin.version>2.3.2</compiler-plugin.version>
<!-- database properties start -->
<database.url>jdbc:mysql://localhost:3306/mvctest</database.url>
<database.username>root</database.username>
<database.password />
<database.driverClassName>com.mysql.jdbc.Driver</database.driverClassName>
<database.type>MYSQL</database.type>
<!-- database properties end -->
</properties>
<repositories>
<repository>
<id>spring-maven-release</id>
<name>Spring Maven Release Repository</name>
<url>http://maven.springframework.org/release</url>
</repository>
<repository>
<id>spring-maven-milestone</id>
<name>Spring Maven Milestone Repository</name>
<url>http://maven.springframework.org/milestone</url>
</repository>
<repository>
<id>spring-roo-repository</id>
<name>Spring Roo Repository</name>
<url>http://spring-roo-repository.springsource.org/release</url>
</repository>
</repositories>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>${spring.version}</version>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${spring.version}</version>
<exclusions>
<!-- Exclude Commons Logging in favor of SLF4j -->
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${spring.version}</version>
</dependency>
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-jpa</artifactId>
<version>${data-jpa.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
</dependency>
<!-- Hibernate/Jpa -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>${hibernate-entity-manager.version}</version>
</dependency>
<!-- Database -->
<dependency>
<groupId>org.liquibase</groupId>
<artifactId>liquibase-core</artifactId>
<version>2.0.2</version>
</dependency>
<dependency>
<groupId>commons-dbcp</groupId>
<artifactId>commons-dbcp</artifactId>
<version>1.4</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.18</version>
</dependency>
<!-- Roo -->
<dependency>
<groupId>org.springframework.roo</groupId>
<artifactId>org.springframework.roo.annotations</artifactId>
<version>${roo.version}</version>
</dependency>
<!-- AspectJ -->
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${aspectj.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjtools</artifactId>
<version>${aspectj.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjweaver</artifactId>
<version>${aspectj.version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>${spring.version}</version>
</dependency>
<!-- Logging -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${org.slf4j-version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>${org.slf4j-version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${org.slf4j-version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.15</version>
<exclusions>
<exclusion>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
</exclusion>
<exclusion>
<groupId>javax.jms</groupId>
<artifactId>jms</artifactId>
</exclusion>
<exclusion>
<groupId>com.sun.jdmk</groupId>
<artifactId>jmxtools</artifactId>
</exclusion>
<exclusion>
<groupId>com.sun.jmx</groupId>
<artifactId>jmxri</artifactId>
</exclusion>
</exclusions>
<scope>runtime</scope>
</dependency>
<!-- @Inject -->
<dependency>
<groupId>javax.inject</groupId>
<artifactId>javax.inject</artifactId>
<version>1</version>
</dependency>
<!-- Servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.apache.tiles</groupId>
<artifactId>tiles-jsp</artifactId>
<version>${tiles.version}</version>
</dependency>
<!-- Test -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.7</version>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<resources>
<resource>
<filtering>true</filtering>
<directory>src/main/resources</directory>
<includes>
<include>**/*.properties</include>
</includes>
</resource>
<resource>
<directory>src/main/resources</directory>
<excludes>
<exclude>**/*.properties</exclude>
</excludes>
</resource>
</resources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-eclipse-plugin</artifactId>
<!-- version is used because of Roo 1.2.1.RELEASE requirement -->
<!-- remove it when fixed -->
<version>${eclipse-plugin.version}</version>
<configuration>
<downloadSources>true</downloadSources>
<downloadJavadocs>false</downloadJavadocs>
<wtpversion>2.0</wtpversion>
<additionalBuildcommands>
<buildCommand>
<name>org.eclipse.ajdt.core.ajbuilder</name>
<arguments>
<aspectPath>org.springframework.aspects</aspectPath>
</arguments>
</buildCommand>
<buildCommand>
<name>org.springframework.ide.eclipse.core.springbuilder</name>
</buildCommand>
</additionalBuildcommands>
<additionalProjectnatures>
<projectnature>org.eclipse.ajdt.ui.ajnature</projectnature>
<projectnature>com.springsource.sts.roo.core.nature</projectnature>
<projectnature>org.springframework.ide.eclipse.core.springnature</projectnature>
</additionalProjectnatures>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>${compiler-plugin.version}</version>
<configuration>
<source>${java.version}</source>
<target>${java.version}</target>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>aspectj-maven-plugin</artifactId>
<version>${aspectj-plugin.version}</version>
<dependencies>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjrt</artifactId>
<version>${aspectj.version}</version>
</dependency>
<dependency>
<groupId>org.aspectj</groupId>
<artifactId>aspectjtools</artifactId>
<version>${aspectj.version}</version>
</dependency>
</dependencies>
<executions>
<execution>
<goals>
<goal>compile</goal>
<goal>test-compile</goal>
</goals>
</execution>
</executions>
<configuration>
<outxml>true</outxml>
<aspectLibraries>
<aspectLibrary>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
</aspectLibrary>
</aspectLibraries>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<configuration>
<mainClass>org.test.int1.Main</mainClass>
</configuration>
</plugin>
<plugin>
<groupId>org.mortbay.jetty</groupId>
<artifactId>jetty-maven-plugin</artifactId>
<version>8.1.4.v20120524</version>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<configuration>
<junitArtifactName>org.junit:com.springsource.org.junit</junitArtifactName>
<excludes>
<exclude>**/*_Roo_*</exclude>
</excludes>
</configuration>
</plugin>
</plugins>
</build>
</project>
这是我的 servlet 上下文：
<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
xmlns:mvc="http://www.springframework.org/schema/mvc"
xmlns:jpa="http://www.springframework.org/schema/data/jpa"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
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-3.1.xsd
http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
http://www.springframework.org/schema/data/jpa http://www.springframework.org/schema/data/jpa/spring-jpa.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-3.1.xsd
http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context-3.1.xsd">
<!-- ========================= GENERAL DEFINITIONS ========================= -->
<mvc:annotation-driven />
<mvc:resources location="/resources/" mapping="/resources/**"/>
<context:property-placeholder location="classpath*:META-INF/spring/*.properties" />
<context:component-scan base-package="com.test.mvc1.web">
<context:exclude-filter expression=".*_Roo_.*" type="regex"/>
<context:exclude-filter expression="org.springframework.stereotype.Controller" type="annotation"/>
</context:component-scan>
<jpa:repositories base-package="com.test.mvc1.repository" />
<!-- ========================= VIEW DEFINITIONS ========================= -->
<bean class="org.springframework.web.servlet.view.UrlBasedViewResolver" id="tilesViewResolver">
<property name="viewClass" value="org.springframework.web.servlet.view.tiles2.TilesView"/>
</bean>
<!-- ========================= TILES DEFINITIONS ========================= -->
<bean class="org.springframework.web.servlet.view.tiles2.TilesConfigurer" id="tilesConfigurer">
<property name="definitions">
<list>
<value>/WEB-INF/defs/tiles.xml</value>
</list>
</property>
</bean>
<!-- ========================= Persistence configuration ========================= -->
<jpa:repositories base-package="com.test.mvc1.repository" />
<bean id="dataSource" class="org.apache.commons.dbcp.BasicDataSource" destroy-method="close">
<property name="driverClassName" value="${database.driverClassName}" />
<property name="url" value="${database.url}" />
<property name="username" value="${database.username}" />
<property name="password" value="${database.password}" />
<property name="testWhileIdle" value="true" />
<property name="timeBetweenEvictionRunsMillis" value="60000" />
<property name="validationQuery" value="SELECT NOW()" />
</bean>
<bean id="entityManagerFactory" depends-on="liquibase" class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
<property name="dataSource" ref="dataSource" />
<property name="packagesToScan" value="com.test.mvc1.domain, ${database.packagesToScan}" />
<property name="jpaProperties">
<props>
<prop key="hibernate.ejb.naming_strategy">${database.namingStrategy}</prop>
<prop key="hibernate.format_sql">true</prop>
<prop key="hibernate.show_sql">${database.showsql}</prop>
<prop key="hibernate.hbm2ddl.auto">${database.hbm2ddl}</prop>
<prop key="hibernate.connection.charSet">UTF-8</prop>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</prop>
</props>
</property>
<property name="jpaVendorAdapter">
<bean class="org.springframework.orm.jpa.vendor.HibernateJpaVendorAdapter">
<property name="database" value="${database.type}" />
<property name="showSql" value="${database.showsql}" />
<property name="generateDdl" value="false" />
</bean>
</property>
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<tx:annotation-driven mode="aspectj" transaction-manager="transactionManager" />
<bean id="liquibase" class="liquibase.integration.spring.SpringLiquibase">
<property name="changeLog" value="classpath:META-INF/db/changelog.xml" />
<property name="dataSource" ref="dataSource" />
</bean>
</beans>
这是错误：
2012-08-12 10:42:24.250:WARN:/:unavailable
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'org.springframework.dao.annotation.PersistenceExceptionTranslationPostProcessor#0': Initialization of bean failed; nested exception is org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in ServletContext resource [/WEB-INF/spring/appServlet/servlet-context.xml]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build EntityManagerFactory
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.doCreateBean(AbstractAutowireCapableBeanFactory.java:527)
Caused by:
org.springframework.beans.factory.BeanCreationException: Error creating bean with name 'entityManagerFactory' defined in ServletContext resource [/WEB-INF/spring/appServlet/servlet-context.xml]: Invocation of init method failed; nested exception is javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build EntityManagerFactory
at org.springframework.beans.factory.support.AbstractAutowireCapableBeanFactory.initializeBean(AbstractAutowireCapableBeanFactory.java:1455)
Caused by:
javax.persistence.PersistenceException: [PersistenceUnit: default] Unable to build EntityManagerFactory
at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:914)
Caused by:
org.hibernate.AnnotationException: No identifier specified for entity: com.test.mvc1.domain.User
at org.hibernate.cfg.InheritanceState.determineDefaultAccessType(InheritanceState.java:276)
2012-08-12 10:42:24.525:INFO:oejs.AbstractConnector:Started SelectChannelConnector@0.0.0.0:8080
[INFO] Started Jetty Server
我需要帮助！我想问题是某些依赖项或插件中的版本冲突。