这是一个简单的项目,包括进行 MySQL 查询并显示它。我使用 NetBeans。 hibernate.xml 和 client.xml 文件是由 NetBeans(Hibernate 配置向导和 Hibernate 映射向导)创建的。我真的不知道问题是什么。 1)POM文件:
<?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.mycompany</groupId>
<artifactId>alsoMaven</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<dependencies>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>6.0.5</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.4.10.Final</version>
<type>jar</type>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>4.3.1.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.1-api</artifactId>
<version>1.0.0.Final</version>
</dependency>
</dependencies>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
</properties>
</project>
2)主类:
public static void main(String[] args) {
StandardServiceRegistry registry = new StandardServiceRegistryBuilder()
.configure() // obtiene los valores de hibernate.cfg.xml
.build();
try {
SessionFactory sessionFactory = new MetadataSources(registry)
.buildMetadata().buildSessionFactory();
Session session = sessionFactory.openSession();
session.beginTransaction();
Cliente c = (Cliente) session.load(Cliente.class, 1);
System.out.println(c);
session.getTransaction().commit();
session.close();
sessionFactory.close();
} catch (Exception e) {
e.printStackTrace();
}
}
3)异常:
------------------------------------------------------------------------
Building alsoMaven 1.0-SNAPSHOT
------------------------------------------------------------------------
Downloading: http://repo.maven.apache.org/maven2/org/jboss/spec/javax/transaction/jboss-transaction-api_1.2_spec/1.1.1.Final/jboss-transaction-api_1.2_spec-1.1.1.Final.jar
Downloading: http://repo.maven.apache.org/maven2/org/javassist/javassist/3.24.0-GA/javassist-3.24.0-GA.jar
Downloading: http://repo.maven.apache.org/maven2/org/jboss/logging/jboss-logging/3.3.2.Final/jboss-logging-3.3.2.Final.jar
Downloading: http://repo.maven.apache.org/maven2/org/hibernate/common/hibernate-commons-annotations/5.1.0.Final/hibernate-commons-annotations-5.1.0.Final.jar
------------------------------------------------------------------------
BUILD FAILURE
------------------------------------------------------------------------
Total time: 3.184s
Finished at: Sun Mar 08 21:10:54 GMT-03:00 2020
Final Memory: 6M/16M
------------------------------------------------------------------------
Failed to execute goal on project alsoMaven: Could not resolve dependencies for project com.mycompany:alsoMaven:jar:1.0-SNAPSHOT: The following artifacts could not be resolved: org.jboss.logging:jboss-logging:jar:3.3.2.Final, org.javassist:javassist:jar:3.24.0-GA, org.jboss.spec.javax.transaction:jboss-transaction-api_1.2_spec:jar:1.1.1.Final, org.hibernate.common:hibernate-commons-annotations:jar:5.1.0.Final: Could not transfer artifact org.jboss.logging:jboss-logging:jar:3.3.2.Final from/to central (http://repo.maven.apache.org/maven2): Failed to transfer file: http://repo.maven.apache.org/maven2/org/jboss/logging/jboss-logging/3.3.2.Final/jboss-logging-3.3.2.Final.jar. Return code is: 501 , ReasonPhrase:HTTPS Required. -> [Help 1]
To see the full stack trace of the errors, re-run Maven with the -e switch.
Re-run Maven using the -X switch to enable full debug logging.
谢谢!
最佳答案
Starting 15 January 2020 ,Maven 中央存储库不支持通过纯 HTTP 进行不安全的通信。您必须调整本地配置。
考虑到这一点,我们在错误消息中发现了一个重要的细节:
Return code is: 501, ReasonPhrase:HTTPS Required.
正如我们在输出中看到的,您仍在使用普通的、未加密的连接来从 Maven Central 查询/检索 Artifact :
Downloading: http://repo.maven.apache.org/maven2/org/jboss/spec/javax/transaction/jboss-transaction-api_1.2_spec/1.1.1.Final/jboss-transaction-api_1.2_spec-1.1.1.Final.jar
...
确保您的本地 settings.xml 仅包含 Maven 中央存储库的带有 https 的条目。因此,条目 http://repo.maven.apache.org/maven2/
必须更改为 https://repo.maven.apache.org/maven2/
.
最小工作配置如下:
<profile>
<id>maven-https</id>
<activation>
<activeByDefault>true</activeByDefault>
</activation>
<repositories>
<repository>
<id>central</id>
<url>https://repo1.maven.org/maven2</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</repository>
</repositories>
<pluginRepositories>
<pluginRepository>
<id>central</id>
<url>https://repo1.maven.org/maven2</url>
<snapshots>
<enabled>false</enabled>
</snapshots>
</pluginRepository>
</pluginRepositories>
</profile>
希望有帮助。
关于java - 为什么使用 Maven 和 Hibernate 设置一个简单的项目会失败?,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/60593326/