在 Eclipse 中运行独立的 java 可执行文件导致 NoClassDefFound
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时间：2020-08-13 09:23:35 来源:igfitidea点击:
running standalone java executable in eclipse results in NoClassDefFound
提问by Nena
Hi I've got a basic Jersey Client that I'm trying to run with a main()in my "main" java class. It compiles fine in Eclipse, but when I try to run it as java application, I get:
嗨，我有一个基本的 Jersey 客户端，我正在尝试main()在我的“主”java 类中运行它。它在 Eclipse 中编译得很好，但是当我尝试将它作为 Java 应用程序运行时，我得到：
Caused by: java.lang.ClassNotFoundException: org.glassfish.jersey.client.JerseyClientBuilder
Can anyone tell me what I'm doing wrong? Here's my pom.xml:
谁能告诉我我做错了什么？这是我的 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>ca.ubc.iamwsClient</groupId>
<artifactId>iamwsClient</artifactId>
<packaging>jar</packaging>
<version>1.0-SNAPSHOT</version>
<name>iamwsClient</name>
<properties>
<jersey.version>2.5.1</jersey.version>
<target.dir>target</target.dir>
<project.build.directory>target</project.build.directory>
</properties>
<repositories>
<repository>
<id>JBoss Repository</id>
<url>https://repository.jboss.org/nexus/content/groups/public</url>
</repository>
</repositories>
<dependencies>
<!-- Hymanson dependencies for pojo/json support -->
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-json-Hymanson</artifactId>
<version>${jersey.version}</version>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-json-processing</artifactId>
<version>${jersey.version}</version>
</dependency>
<!-- end Hymanson deps -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.9</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.glassfish.jersey.core</groupId>
<artifactId>jersey-client</artifactId>
<version>${jersey.version}</version>
</dependency>
<!-- <dependency> <groupId>com.sun.jersey</groupId> <artifactId>jersey-client</artifactId>
<version>1.8</version> </dependency> -->
<dependency>
<groupId>org.glassfish.jersey.connectors</groupId>
<artifactId>jersey-apache-connector</artifactId>
<version>${jersey.version}</version>
</dependency>
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>javax.ws.rs-api</artifactId>
<version>2.0</version>
</dependency>
<!-- <dependency> <groupId>javax.ws.rs</groupId> <artifactId>jsr311-api</artifactId>
<version>1.1</version> </dependency> -->
</dependencies>
<build>
<finalName>iamwsClient</finalName>
<outputDirectory>${basedir}/${target.dir}/classes</outputDirectory>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>2.5.1</version>
<inherited>true</inherited>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<executions>
<execution>
<id>copy-dependencies</id>
<phase>prepare-package</phase>
<goals>
<goal>copy-dependencies</goal>
</goals>
<configuration>
<outputDirectory>${project.build.directory}/classes/lib</outputDirectory>
<overWriteReleases>false</overWriteReleases>
<overWriteSnapshots>false</overWriteSnapshots>
<overWriteIfNewer>true</overWriteIfNewer>
</configuration>
</execution>
</executions>
</plugin>
<plugin>
<groupId>org.eclipse.m2e</groupId>
<artifactId>lifecycle-mapping</artifactId>
<configuration>
<lifecycleMappingMetadata>
<pluginExecutions>
<!-- copy-dependency plugin -->
<pluginExecution>
<pluginExecutionFilter>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-dependency-plugin</artifactId>
<versionRange>[0.0,)</versionRange>
<goals>
<goal>copy-dependencies</goal>
</goals>
</pluginExecutionFilter>
<action>
<ignore />
</action>
</pluginExecution>
</pluginExecutions>
</lifecycleMappingMetadata>
</configuration>
</plugin>
<!-- <plugin>
<groupId>org.codehaus.mojo</groupId>
<artifactId>exec-maven-plugin</artifactId>
<version>1.2.1</version>
<executions>
<execution>
<goals>
<goal>java</goal>
</goals>
</execution>
</executions>
<configuration>
<mainClass>ca.ubc.iamwsClient.IamwsClient</mainClass>
</configuration>
</plugin> -->
<plugin>
<artifactId>maven-assembly-plugin</artifactId>
<configuration>
<archive>
<manifest>
<mainClass>ca.ubc.iamwsClient.IamwsClient</mainClass>
</manifest>
</archive>
<descriptorRefs>
<descriptorRef>jar-with-dependencies</descriptorRef>
</descriptorRefs>
</configuration>
</plugin>
</plugins>
<pluginManagement>
<plugins>
<!--This plugin's configuration is used to store Eclipse m2e settings
only. It has no influence on the Maven build itself. -->
<plugin>
<groupId>org.eclipse.m2e</groupId>
<artifactId>lifecycle-mapping</artifactId>
<version>1.0.0</version>
<configuration>
<lifecycleMappingMetadata>
<pluginExecutions>
<pluginExecution>
<pluginExecutionFilter>
<groupId>
org.apache.maven.plugins
</groupId>
<artifactId>
maven-dependency-plugin
</artifactId>
<versionRange>
[2.1,)
</versionRange>
<goals>
<goal>
copy-dependencies
</goal>
</goals>
</pluginExecutionFilter>
<action>
<ignore></ignore>
</action>
</pluginExecution>
</pluginExecutions>
</lifecycleMappingMetadata>
</configuration>
</plugin>
</plugins>
</pluginManagement>
</build>
</project>
Client that I'm trying to run:
我正在尝试运行的客户端：
package ca.ubc.iamwsClient;
import javax.ws.rs.client.Client;
import javax.ws.rs.client.ClientBuilder;
import javax.ws.rs.client.Entity;
import javax.ws.rs.client.WebTarget;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import org.glassfish.jersey.Hymanson.HymansonFeature;
import ca.ubc.iamwsClient.json.CreateEmployeeBean;
import ca.ubc.iamwsClient.json.CreateEmployeeResponseBean;
/**
* Main class.
*
*/
public class IamwsClient {
private WebTarget getTarget(String targetUrl) throws Exception {
// create the client
Client c = ClientBuilder.newClient().register(HymansonFeature.class);
return c.target(targetUrl);
}
public CreateEmployeeResponseBean sendCreateEmployeeRequest(CreateEmployeeBean createBean, String url) {
CreateEmployeeResponseBean rb = null;
try {
WebTarget target = getTarget(url);
WebTarget wt = target.path("employeeAutoCreate");
WebTarget generateTarget = wt.path("generate");
rb = generateTarget.request(MediaType.APPLICATION_JSON_TYPE).post(Entity.entity(createBean,MediaType.APPLICATION_FORM_URLENCODED_TYPE),
CreateEmployeeResponseBean.class);
System.out.println("CreateEmployee: generate response: success=" + rb.getSuccess() + " message=" + rb.getMessage());
} catch (Throwable t) {
t.printStackTrace();
System.out.println("*********EXCEPTION THROWN: " + t.getMessage());
}
return rb;
}
public static void main(String[] args) {
String testUrl="http://localhost:9090/iamws";
CreateEmployeeBean bean = new CreateEmployeeBean();
// ... set some details on bean....
IamwsClient client = new IamwsClient();
CreateEmployeeResponseBean response = client.sendCreateEmployeeRequest(bean, testUrl);
if (response != null) {
System.out.println("*********server responded with flag: " + response.getSuccess() + " message: " + response.getMessage());
}
}
}
采纳答案by maksimov
You need to make sure that the JAR dependency containing org.glassfish.jersey.client.JerseyClientBuilderclass is available on your application's classpath during the run time. There's really no other explanation to NoClassDefFounderror.
您需要确保包含org.glassfish.jersey.client.JerseyClientBuilder类的 JAR 依赖项在运行时在您的应用程序的类路径上可用。NoClassDefFound错误真的没有其他解释。
From what I can google on this class, it should be available in
从我可以在这门课上用谷歌搜索的内容来看，它应该可以在
<dependency>
<groupId>org.glassfish.jersey.core</groupId>
<artifactId>jersey-client</artifactId>
<version>2.0-m04</version>
</dependency>
In other words your com.sun.jerseydependency may be missing it.
换句话说，您的com.sun.jersey依赖项可能缺少它。
EDIT
编辑
This is the actual answer which the OP added to the Question afterwards:
这是 OP 之后添加到问题中的实际答案：
<jersey.version>2.5.1</jersey.version>
<dependency>
<groupId>org.glassfish.jersey.media</groupId>
<artifactId>jersey-media-json-processing</artifactId>
<version>${jersey.version}</version>
</dependency>
<dependency>
<groupId>javax.ws.rs</groupId>
<artifactId>javax.ws.rs-api</artifactId>
<version>2.0</version>
</dependency>
He already had org.glassfish.jersey.coreand org.glassfish.jersey.connectors. He removed com.sun.jerseydependency.
他已经有了org.glassfish.jersey.core和org.glassfish.jersey.connectors。他去除了com.sun.jersey依赖。
I am going to try this myself shortly.
我很快就会自己尝试这个。
