persistence.xml文件是不是在classpath

  • Z时代
  • 2024-01-10
  • 分类：问答

所以我试图建立使用Wildfly，JPA，Hibernate和MariaDB的使用Maven在Eclipse的adminsystem。我在WildFly管理控制台中配置了我的数据源，一切正常。 Succesful connection picture in WildFly 现在我试图写入该项目与实体管理器工厂的数据库在Eclipse。但我有此错误消息： Error message in Eclipse 在这里你可以看到我的项目树： Project treepersistence.xml文件是不是在classpath

这里是我的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/xsd/maven-4.0.0.xsd"> 
<modelVersion>4.0.0</modelVersion> 
<groupId>com.gyurmatag.adminsystem</groupId> 
<artifactId>adminsystem</artifactId> 
<version>1.0</version> 
<packaging>war</packaging> 
<properties> 
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
    <java.version>1.8</java.version> 
    <servlet.version>3.1.0</servlet.version> 
    <jsf.version>2.2.12</jsf.version> 
    <primefaces.version>5.3</primefaces.version> 
    <version.wildfly>9.0.2.Final</version.wildfly> 
    <jboss.home>${project.build.directory}/wildfly-${version.wildfly} 
    </jboss.home> 
    <server.config>standalone.xml</server.config> 
    <maven-compiler-plugin.version>3.3</maven-compiler-plugin.version> 
    <maven-dependency-plugin>2.10</maven-dependency-plugin> 
    <maven-resources-plugin.version>2.7</maven-resources-plugin.version> 
    <wildfly-maven-plugin.version>1.1.0.Alpha5</wildfly-maven-plugin.version> 
</properties> 
<dependencies> 
    <!-- Servlet --> 
    <dependency> 
     <groupId>javax.servlet</groupId> 
     <artifactId>javax.servlet-api</artifactId> 
     <version>${servlet.version}</version> 
     <scope>provided</scope> 
    </dependency> 
    <!-- JSF --> 
    <dependency> 
     <groupId>com.sun.faces</groupId> 
     <artifactId>jsf-api</artifactId> 
     <version>${jsf.version}</version> 
     <scope>compile</scope> 
    </dependency> 
    <dependency> 
     <groupId>com.sun.faces</groupId> 
     <artifactId>jsf-impl</artifactId> 
     <version>${jsf.version}</version> 
     <scope>compile</scope> 
    </dependency> 
    <!-- PrimeFaces --> 
    <dependency> 
     <groupId>org.primefaces</groupId> 
     <artifactId>primefaces</artifactId> 
     <version>${primefaces.version}</version> 
    </dependency>  
    <!-- https://mvnrepository.com/artifact/org.mariadb.jdbc/mariadb-java- 
client --> 
    <dependency> 
     <groupId>org.mariadb.jdbc</groupId> 
     <artifactId>mariadb-java-client</artifactId> 
     <version>2.2.0</version> 
    </dependency> 
    <!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-core --> 
    <dependency> 
     <groupId>org.hibernate</groupId> 
     <artifactId>hibernate-core</artifactId> 
     <version>5.2.12.Final</version> 
    </dependency> 
    <dependency> 
     <groupId>org.hibernate.javax.persistence</groupId> 
     <artifactId>hibernate-jpa-2.1-api</artifactId> 
     <version>1.0.0.Final</version> 
    </dependency> 
    <!-- https://mvnrepository.com/artifact/org.hibernate/hibernate- 
entitymanager --> 
    <dependency> 
     <groupId>org.hibernate</groupId> 
     <artifactId>hibernate-entitymanager</artifactId> 
     <version>5.2.12.Final</version> 
    </dependency> 
</dependencies> 
<build> 
<pluginManagement> 
    <plugins> 
     <plugin> 
      <groupId>org.apache.maven.plugins</groupId> 
      <artifactId>maven-compiler-plugin</artifactId> 
      <version>${maven-compiler-plugin.version}</version> 
      <configuration> 
       <source>${java.version}</source> 
       <target>${java.version}</target> 
      </configuration> 
     </plugin> 
     <!-- Unpack the distribution --> 
     <plugin> 
      <groupId>org.apache.maven.plugins</groupId> 
      <artifactId>maven-dependency-plugin</artifactId> 
      <version>${maven-resources-plugin.version}</version> 
      <executions> 
       <execution> 
        <id>unpack-wildfly</id> 
        <phase>generate-sources</phase> 
        <goals> 
         <goal>unpack</goal> 
        </goals> 
        <configuration> 
         <artifactItems> 
          <artifactItem> 
           <groupId>org.wildfly</groupId> 
           <artifactId>wildfly-dist</artifactId> 
           <version>${version.wildfly}</version> 
           <type>zip</type> 
           <overWrite>false</overWrite> 
           <outputDirectory>${project.build.directory} 
</outputDirectory> 
          </artifactItem> 
         </artifactItems> 
        </configuration> 
       </execution> 
      </executions> 
     </plugin> 
     <!-- Copy server configuration --> 
     <plugin> 
      <groupId>org.apache.maven.plugins</groupId> 
      <artifactId>maven-resources-plugin</artifactId> 
      <version>${maven-resources-plugin.version}</version> 
      <executions> 
       <execution> 
        <id>copy-standalone-xml</id> 
        <phase>generate-sources</phase> 
        <goals> 
         <goal>copy-resources</goal> 
        </goals> 
        <configuration> 
<outputDirectory>${jboss.home}/standalone/configuration</outputDirectory> 
         <resources> 
          <resource> 
           <directory>src/main/resources</directory> 
          </resource> 
         </resources> 
        </configuration> 
       </execution> 
      </executions> 
     </plugin> 
     <!-- Maven WildFly plugin --> 
     <plugin> 
      <groupId>org.wildfly.plugins</groupId> 
      <artifactId>wildfly-maven-plugin</artifactId> 
      <version>${wildfly-maven-plugin.version}</version> 
      <configuration> 
       <jbossHome>${jboss.home}</jbossHome> 
       <serverConfig>${server.config}</serverConfig> 
      </configuration> 
     </plugin> 
    </plugins> 
    </pluginManagement> 
</build>

这里是我的持久性。 XML：

<?xml version="1.0" encoding="UTF-8"?> 
<persistence xmlns="http://java.sun.com/xml/ns/persistence" 
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" 
     xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_2_0.xsd" 
     version="2.0"> 
      <persistence-unit name="adminsystem" transaction-type="JTA"> 
      <provider>org.hibernate.jpa.HibernatePersistenceProvider</provider> 
       <jta-data-source>jboss/MariaDBDS</jta-data-source> 
       <properties> 
        <property name="hibernate.dialect" value="org.hibernate.dialect.Oracle10gDialect" /> 
        <property name="hibernate.hbm2ddl.auto" value="validate" /> 
        <property name="hibernate.show_sql" value="true" /> 
        <property name="hibernate.format_sql" value="true" /> 
        <property name="hibernate.connection.release_mode" value="auto" /> 
       </properties> 
      </persistence-unit>

这里是我JPAUtility类：

package com.gyurmatag.adminsystem.model; 
import javax.persistence.EntityManager; 
import javax.persistence.EntityManagerFactory; 
import javax.persistence.Persistence; 
public class JPAUtility { 
private static final EntityManagerFactory emFactory; 
static { 
     emFactory = Persistence.createEntityManagerFactory("adminsystem"); 
} 
public static EntityManager getEntityManager(){ 
    return emFactory.createEntityManager(); 
} 
public static void close(){ 
    emFactory.close(); 
} 
}

如果你想采取一个更仔细看看我的项目，你可以在这里找到：Bitbucket repo

你能帮助我有了这个？

非常感谢！ :)

回答：

我怀疑你有太常见了“太多的依赖错误”。

更换所有你的依赖与：

<dependencies> 
    <dependency> 
     <groupId>javax</groupId> 
     <artifactId>javaee-api</artifactId> 
     <version>7.0</version> 
     <scope>provided</scope> 
    </dependency> 
    <dependency> 
     <groupId>org.primefaces</groupId> 
     <artifactId>primefaces</artifactId> 
     <version>${primefaces.version}</version> 
    </dependency>  
</dependencies>

，看你怎么去...

以上是 persistence.xml文件是不是在classpath 的全部内容， 来源链接： utcz.com/qa/257449.html

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