将Javax嵌入java9
我花了几个小时试图解决这个问题,我需要帮助: 这不是一个未知的问题,javax不是java9的一部分,如果没有下面的exeption,我想不出如何运行它:将Javax嵌入java9,java,hibernate,java-9,Java,Hibernate,Java 9,我花了几个小时试图解决这个问题,我需要帮助: 这不是一个未知的问题,javax不是java9的一部分,如果没有下面的exeption,我想不出如何运行它: Exception in thread "main" org.hibernate.internal.util.config.ConfigurationException: Unable to perform unmarshalling at line number 0 and column 0 in FILE C:\Users\Miles\W
Exception in thread "main" org.hibernate.internal.util.config.ConfigurationException: Unable to perform unmarshalling at line number 0 and column 0 in FILE C:\Users\Miles\Workspace\Projekte\SpringProjekte\RestForFun\resources\hibernate.cfg.xml. Message: null
at org.hibernate.boot.cfgxml.internal.JaxbCfgProcessor.unmarshal(JaxbCfgProcessor.java:133)
at org.hibernate.boot.cfgxml.internal.JaxbCfgProcessor.unmarshal(JaxbCfgProcessor.java:65)
at org.hibernate.boot.cfgxml.internal.ConfigLoader.loadConfigXmlFile(ConfigLoader.java:76)
at org.hibernate.boot.registry.StandardServiceRegistryBuilder.configure(StandardServiceRegistryBuilder.java:167)
at org.hibernate.cfg.Configuration.configure(Configuration.java:300)
at noobz.teamz.RestForFun.RestForFunApplication.main(RestForFunApplication.java:31)
Caused by: javax.xml.bind.JAXBException: Implementation of JAXB-API has not been found on module path or classpath.
- with linked exception:
[java.lang.ClassNotFoundException: com.sun.xml.internal.bind.v2.ContextFactory]
at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:278)
at javax.xml.bind.ContextFinder.find(ContextFinder.java:421)
at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:721)
at javax.xml.bind.JAXBContext.newInstance(JAXBContext.java:662)
at org.hibernate.boot.cfgxml.internal.JaxbCfgProcessor.unmarshal(JaxbCfgProcessor.java:122)
... 5 more
Caused by: java.lang.ClassNotFoundException: com.sun.xml.internal.bind.v2.ContextFactory
at java.base/jdk.internal.loader.BuiltinClassLoader.loadClass(BuiltinClassLoader.java:582)
at java.base/jdk.internal.loader.ClassLoaders$AppClassLoader.loadClass(ClassLoaders.java:185)
at java.base/java.lang.ClassLoader.loadClass(ClassLoader.java:496)
at javax.xml.bind.ServiceLoaderUtil.nullSafeLoadClass(ServiceLoaderUtil.java:122)
at javax.xml.bind.ServiceLoaderUtil.safeLoadClass(ServiceLoaderUtil.java:155)
at javax.xml.bind.ContextFinder.newInstance(ContextFinder.java:276)
... 9 more
这是我的例子:
import org.hibernate.cfg.Configuration;
import java.io.*;
public class RestForFunApplication {
public static void main(String[] args) {
RestForFunApplication rsf = new RestForFunApplication();
File file = new File("resources\\hibernate.cfg.xml");
if (!file.exists())
System.out.println("no hibernate.cfg.xml");
Configuration sessionFactory = new Configuration();
sessionFactory.configure(file);
}
}
这是我的pom.xml:
<?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>noobz.teamz</groupId>
<artifactId>RestForFun</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>RestForFun</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>1.5.9.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-data-jpa</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.postgresql</groupId>
<artifactId>postgresql</artifactId>
<version>42.1.4</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>5.2.12.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>6.0.7.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-search</artifactId>
<version>5.8.2.Final</version>
</dependency>
<dependency>
<groupId>javax.inject</groupId>
<artifactId>javax.inject</artifactId>
<version>1</version>
</dependency>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>org.glassfish.jaxb</groupId>
<artifactId>jaxb-core</artifactId>
<version>2.3.0</version>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.6.2</version>
<configuration>
<release>9</release>
<compilerArgs>
<arg>--add-modules</arg>
<arg>javax.xml.bind</arg>
</compilerArgs>
</configuration>
</plugin>
</plugins>
</build>
及
以intellij idea编译器设置,并尝试通过控制台运行
什么都不管用,我还是有例外。我最想哭的是,我非常渴望得到这份工作。这是个好问题。但是它可以简化为一个非常简短的示例,因此您不需要使用
spring
或hibernate
依赖关系来打扰读者。下面是简短的代码:
public static void main(String[] args) throws Exception {
JAXBContext jaxbContext = JAXBContext.newInstance(Foo.class);
}
将导致问题(请考虑Foo
be any POJO)
事实上,所有关于S.O.的现有解决方案都不能正常工作(例如,这个“规范”问题:)。我不知道这是最近的JavaJDK(9.0.1)更新的结果,还是我做错了。然而。我个人认为玩--addmodule
属性不是一种干净的方式。我相信,正确的方法是只使用maven依赖项。我已经找到了这个需要的最小列表,它是:
<dependencies>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>org.glassfish.jaxb</groupId>
<artifactId>jaxb-runtime</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>javax.activation</groupId>
<artifactId>activation</artifactId>
<version>1.1.1</version>
</dependency>
</dependencies>
当您使用Java-9时 我已找到(并检查)下一组依赖项:
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.1</version>
</dependency>
<dependency>
<groupId>org.glassfish.jaxb</groupId>
<artifactId>jaxb-runtime</artifactId>
<version>2.3.1</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>javax.activation</groupId>
<artifactId>javax.activation-api</artifactId>
<version>1.2.0</version>
</dependency>
javax.xml.bind
更新:对于Java 11,这就足够了:
<dependency>
<groupId>org.glassfish.jaxb</groupId>
<artifactId>jaxb-runtime</artifactId>
<version>2.4.0-b180830.0438</version>
</dependency>
org.glassfish.jaxb
我建议首先尝试从命令行使用Maven。您的pom称为javax.xml.bind,但该模块称为java.xml.bind(java后面没有x)。尽管这会导致另一个错误……但异常看起来确实像是加载了java.xml.bind。否则,JAXBException
将不可用-也许?您可以将对org.glassfish.jaxb:jaxb-core:2.3.0
的依赖替换为对com.sun.xml.bind:jaxb-core:2.3.0
和javax.activation:javax.activation-api:1.2.0
?我认为这些是JAXB实现的正确坐标(您拥有JAXB API的正确坐标)。您还可以在使用独立版本时,从POM中删除--添加模块。没错,这项更改付出了巨大的努力!非常感谢。现在,如果我更改回代码并启动它,那么会有一个以java.lang.NoClassDefFoundError结尾的长调试列表:javax/validation/ClockProvider。我找不到合适的依赖关系(真丢脸)。你有什么提示吗?我想在做正确的标记之前取得成功。泰:)你试过这个依赖关系吗?但无论如何,这个问题超出了你最初问题的范围。如果我帮助你解决了这个特殊的问题,那么接受这个答案将是公平的,因为这个依赖解决了它!请将其添加到下一个问题的答案中。非常感谢。不仅要找到答案,还要找到正确的依赖关系!谢谢,在其他地方尝试了许多其他建议后,这对我来说非常有效。如果可以的话,我会投两次票!
<dependencies>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>com.sun.xml.bind</groupId>
<artifactId>jaxb-impl</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>org.glassfish.jaxb</groupId>
<artifactId>jaxb-runtime</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>javax.activation</groupId>
<artifactId>activation</artifactId>
<version>1.1.1</version>
</dependency>
</dependencies>
<java.version>1.8</java.version>
<dependency>
<groupId>javax.xml.bind</groupId>
<artifactId>jaxb-api</artifactId>
<version>2.3.1</version>
</dependency>
<dependency>
<groupId>org.glassfish.jaxb</groupId>
<artifactId>jaxb-runtime</artifactId>
<version>2.3.1</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>javax.activation</groupId>
<artifactId>javax.activation-api</artifactId>
<version>1.2.0</version>
</dependency>
<dependency>
<groupId>org.glassfish.jaxb</groupId>
<artifactId>jaxb-runtime</artifactId>
<version>2.4.0-b180830.0438</version>
</dependency>