Java 为什么用Maven和Hibernate设置一个简单的项目失败了？

这是一个简单的项目，包括创建一个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。我真的不知道问题出在哪里。 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>

3） 例外情况：

------------------------------------------------------------------------
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

您可能需要在settings.xml中添加代理，如下所示

<proxies>
    <proxy>
        <id>optional</id>
        <active>true</active>
        <protocol>https</protocol>
        <username>abc</</username>
        <password>abc123</password>
        <host>webproxy.company.com</host>
        <port>8081</port>
        <!-- <nonProxyHosts>local.net|some.host.com</nonProxyHosts> -->
    </proxy>
</proxies>

可选择的
真的
https
abc

，中央Maven存储库不支持通过普通HTTP进行不安全的通信。您必须调整本地配置

考虑到这一点，我们在错误消息中找到了一个重要的细节：

返回代码为：501，原因短语：需要HTTPS

正如我们在输出中所看到的，您仍然使用普通的、未加密的连接从Maven Central查询/检索人工制品：

下载：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local settings.xml中只包含Maven中央存储库的https条目。因此，条目

http://repo.maven.apache.org/maven2/

必须更改为

https://repo.maven.apache.org/maven2/

最低工作配置如下所示：

<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>

maven https
真的
中心的
https://repo1.maven.org/maven2
假的
中心的
https://repo1.maven.org/maven2
假的

---

希望能有帮助。

@DorianGray很高兴它有帮助。

<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>