我在使用persistent.xml创建数据库时遇到了一个非常大的问题。好吧,我从头开始。 我创建了一个maven(神器 - > webapp)项目。我添加了文件的persistence.xml一个META-INF目录复制到我的源目录这样的:persistance.xml不会在Intellij中创建数据库
<?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="myDatabase" transaction-type="RESOURCE_LOCAL">
<provider>org.hibernate.ejb.HibernatePersistence</provider>
<exclude-unlisted-classes>false</exclude-unlisted-classes>
<properties>
<property name="javax.persistence.jdbc.driver" value="com.mysql.jdbc.Driver" />
<property name="javax.persistence.jdbc.user" value="root" />
<property name="javax.persistence.jdbc.password" value="root" />
<property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3306/Lab6" />
<property name="hibernate.hbm2ddl.auto" value="create" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect" />
</properties>
</persistence-unit>
</persistence>
然后我把一些模型到我的Java源代码。我加了注释apropiate这样的:
package model;
import javax.persistence.*;
@Entity
@Table(name="author")
public class Author
{
private int Id;
private String firstName;
private String lastName;
@Id
@Column(name = "id", nullable = false)
@GeneratedValue(strategy= GenerationType.SEQUENCE, generator="seq")
public int getId() {
return Id;
}
public void setId(int id) {
Id = id;
}
@Column(name = "first_name", nullable = false)
public String getFirstName() {
return firstName;
}
public void setFirstName(String firstName) {
this.firstName = firstName;
}
@Column(name = "last_name", nullable = false)
public String getLastName() {
return lastName;
}
public void setLastName(String lastName) {
this.lastName = lastName;
}
}
这个我加入一个Servlet类连接到使用让POST方法程序进行一些操作后。没关系:)之后,我运行了该项目,并没有发生任何事情;程序运行成功,我可以进入servlet但数据库没有被创建。然后我开始在网上搜索解决方案,没有什么帮助我解决我的问题。下面是我的pom.xml文件:
<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>Lab6</groupId>
<artifactId>Lab6</artifactId>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<name>Lab6 Maven Webapp</name>
<url>http://maven.apache.org</url>
<build>
<finalName>Lab6</finalName>
<testResources>
<testResource>
<directory>src/resources</directory>
<filtering>true</filtering>
</testResource>
</testResources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.6.1</version>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>3.8.1</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>javax.persistence</groupId>
<artifactId>persistence-api</artifactId>
<version>1.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax</groupId>
<artifactId>javaee-api</artifactId>
<version>6.0</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.1-api</artifactId>
<version>1.0.0.Final</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.38</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>3.0-alpha-1</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>4.2.0.Final</version>
</dependency>
<dependency>
<groupId>net.java.dev.glassfish</groupId>
<artifactId>glassfish-persistence-api</artifactId>
<version>b32g</version>
</dependency>
</dependencies>
</project>
我确实卡住了。直到现在,我在persistence.xml中检查了其他版本的提供者(eclipse),并在该文件中做了一些非常奇怪的更改,但没有成功。我也在检查战争档案。每个需要的文件都在里面(特别是persistence.xml)。 FI更改服务器的我目前的GlassFish版本不同的人,但它没有帮助:((( Reeally家伙,请帮助我,我的knowlage是ropably太低有更好的想法ghow来修复
在此先感谢
你。已经打过电话了它有'perstistance.xml','persistent.xml'和'persistence.xml'。您需要复制并粘贴文件名,因为任何拼写错误都会确保它无法工作。 WAR文件中'persistence.xml'的确切路径是什么? – ngreen
对这个名字的错误感到抱歉,但是当我写这个时,我几乎在睡觉。我确保你有我persistence.xml的正确名称 – fOrest94