我在 Eclipse 中有一個帶有 Hibernate 的 Webservice 專案（Tomcat v10.0 et java JDK 8）。當我運行時，我收到此錯誤：“Servlet.service() for servlet [Jersey Web Application] in context with path [/musichall] 拋出例外 [org.glassfish.jersey.server.ContainerException: java.lang.NoClassDefFoundError: javax /validation/ValidatorFactory] ??與根本原因 java.lang.ClassNotFoundException: javax.validation.ValidatorFactory"
下面是我的 pom.xml
<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>org.restapi.crud</groupId>
<artifactId>musichall</artifactId>
<packaging>war</packaging>
<version>0.0.1-SNAPSHOT</version>
<name>musichall</name>
<build>
<finalName>musichall</finalName>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.1</version>
<inherited>true</inherited>
<configuration>
<source>1.8</source>
<target>1.8</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>3.3.1</version>
</plugin>
</plugins>
</build>
<dependencyManagement>
<dependencies>
<dependency>
<groupId>org.glassfish.jersey</groupId>
<artifactId>jersey-bom</artifactId>
<version>${jersey.version}</version>
<type>pom</type>
<scope>import</scope>
</dependency>
</dependencies>
</dependencyManagement>
<dependencies>
<dependency>
<groupId>org.glassfish.jersey.containers</groupId>
<artifactId>jersey-container-servlet-core</artifactId>
<!-- use the following artifactId if you don't need servlet 2.x compatibility -->
<!-- artifactId>jersey-container-servlet</artifactId -->
</dependency>
<dependency>
<groupId>org.glassfish.jersey.inject</groupId>
<artifactId>jersey-hk2</artifactId>
</dependency>
<!-- uncomment this to get JSON support -->
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-json-binding</artifactId>
</dependency>
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-core -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>5.6.1.Final</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.hibernate/hibernate-validator -->
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>7.0.1.Final</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>8.0.27</version>
</dependency>
</dependencies>
<properties>
<jersey.version>3.0.3</jersey.version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
</project>
這是我的檔案“persistence.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="app-DB">
<provider>org.hibernate.jpa.HibernatePersistenceProvider</provider>
<class>org.restapi.crud.musichall.model.Musicien</class>
<properties>
<property name="javax.persistence.jdbc.driver" value="com.mysql.cj.jdbc.Driver" />
<property name="javax.persistence.jdbc.url" value="jdbc:mysql://localhost:3307/webservice" />
<property name="javax.persistence.jdbc.user" value="user1" />
<property name="javax.persistence.jdbc.password" value="password" />
<property name="hibernate.dialect" value="org.hibernate.dialect.MySQLDialect" />
</properties>
</persistence-unit>
</persistence>
這是“MusicienService”類
import java.util.ArrayList;
import java.util.List;
import javax.persistence.EntityManager;
import javax.persistence.EntityManagerFactory;
import javax.persistence.EntityTransaction;
import javax.persistence.Persistence;
import org.restapi.crud.musichall.model.Musicien;
public class MusicienService {
EntityManagerFactory entityManagerFactory = null;
EntityManager entityManager = null;
public List<Musicien> getAll() throws Exception {
List<Musicien> listMusicien = new ArrayList<>();
try {
// Call persistence.xml
entityManagerFactory = Persistence.createEntityManagerFactory("app-DB");
entityManager = entityManagerFactory.createEntityManager();
System.out.println("List des musiciens");
listMusicien = entityManager.createQuery("from Musicien", Musicien.class).getResultList();
for (Musicien musicien2 : listMusicien) {
System.out.println(musicien2);
}
return listMusicien;
}
finally {
if (entityManager!=null) { entityManager.close();}
if (entityManagerFactory!=null) {entityManagerFactory.close();}
}
}
}
這是“MusicienController”類
package org.restapi.crud.musichall.control;
import java.util.List;
import org.restapi.crud.musichall.model.Musicien;
import org.restapi.crud.musichall.service.MusicienService;
import jakarta.ws.rs.Consumes;
import jakarta.ws.rs.GET;
import jakarta.ws.rs.Path;
import jakarta.ws.rs.Produces;
import jakarta.ws.rs.core.MediaType;
@Path ("/musicien")
public class MusicienController {
@GET
@Produces(MediaType.TEXT_PLAIN)
public String getIt() {
return "Got Musicien!!!!";
}
private MusicienService service = new MusicienService();
@Path ("/getAllMusiciens")
@GET
@Produces(MediaType.APPLICATION_JSON)
public List<Musicien> getAllMusicien () throws Exception {
return service.getAll();
}
}
錯誤資訊
HTTP Status 500 – Internal Server Error
Type Exception Report
Message org.glassfish.jersey.server.ContainerException: java.lang.NoClassDefFoundError: javax/validation/ValidatorFactory
Description The server encountered an unexpected condition that prevented it from fulfilling the request.
Exception
jakarta.servlet.ServletException: org.glassfish.jersey.server.ContainerException: java.lang.NoClassDefFoundError: javax/validation/ValidatorFactory
org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:410)
org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:346)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:366)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:319)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:205)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
Root Cause
org.glassfish.jersey.server.ContainerException: java.lang.NoClassDefFoundError: javax/validation/ValidatorFactory
org.glassfish.jersey.servlet.internal.ResponseWriter.rethrow(ResponseWriter.java:254)
org.glassfish.jersey.servlet.internal.ResponseWriter.failure(ResponseWriter.java:236)
org.glassfish.jersey.server.ServerRuntime$Responder.process(ServerRuntime.java:438)
org.glassfish.jersey.server.ServerRuntime$1.run(ServerRuntime.java:263)
org.glassfish.jersey.internal.Errors$1.call(Errors.java:248)
org.glassfish.jersey.internal.Errors$1.call(Errors.java:244)
org.glassfish.jersey.internal.Errors.process(Errors.java:292)
org.glassfish.jersey.internal.Errors.process(Errors.java:274)
org.glassfish.jersey.internal.Errors.process(Errors.java:244)
org.glassfish.jersey.process.internal.RequestScope.runInScope(RequestScope.java:265)
org.glassfish.jersey.server.ServerRuntime.process(ServerRuntime.java:234)
org.glassfish.jersey.server.ApplicationHandler.handle(ApplicationHandler.java:684)
org.glassfish.jersey.servlet.WebComponent.serviceImpl(WebComponent.java:394)
org.glassfish.jersey.servlet.WebComponent.service(WebComponent.java:346)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:366)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:319)
org.glassfish.jersey.servlet.ServletContainer.service(ServletContainer.java:205)
org.apache.tomcat.websocket.server.WsFilter.doFilter(WsFilter.java:53)
Note The full stack trace of the root cause is available in the server logs.
非常感謝你！！！
uj5u.com熱心網友回復：
javax.validation.ValidatorFactory 存在于以下依賴項中：
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>2.0.1.Final</version>
</dependency>
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